Multi-vendor commerce, payments and payouts, built to transact from day one.
Set course →
Coming soon
[x:02 y:02]
Build a SaaS product
From MVP to a platform your customers rely on every day.
Set course →
Coming soon
[x:03 y:01]
Implement AI agents
Agents that do real work inside the systems you already run.
Set course →
Coming soon
[x:04 y:02]
Rebuild your website
Fast, findable and easy to run, with a CMS your team actually uses.
Set course →
Coming soon
[x:05 y:01]
Ship an MVP
A working product in weeks, scoped to prove the idea.
Set course →
Coming soon
[x:06 y:02]
Design a better UX
Journeys that convert, backed by research rather than taste alone.
Set course →
Coming soon
[x:07 y:01]
Grow your ecommerce
Storefronts that load fast, rank well and sell more.
Set course →
Coming soon
[x:08 y:02]
Automate a workflow
Kill the manual steps that eat your team's week.
Set course →
Coming soon
[x:09 y:01]
Rank higher on search
Technical SEO and content that compounds month after month.
Set course →
Coming soon
[x:10 y:02]
Harden your platform
Performance, stability and security, measured and fixed.
Set course →
Coming soon
[x:11 y:01]
Build a mobile app
One codebase, shipped to both stores.
Set course →
Coming soon
[x:12 y:02]
Get ongoing support
A senior team on hand after launch, not a ticket queue.
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Trusted by product teams_
"We've recently completed Phase 1 of a bespoke business valuation tool with James at Code23, and I've been extremely impressed. He took the time to understand both the commercial and technical requirements, communicated clearly throughout, and delivered a well-thought-out system."
Jason Atkins Director, Lansley Commercial
Delivery model_
People lead. Agents get to work.
Experienced people lead every project. Specialist AI agents research,
draft, build and check more at every stage. People stay accountable for
every decision and everything that ships.
Senior lead
Directs · Decides · Signs off
Research agent
Reads the market, the code and the data
Design agent
Drafts variants while designers direct
Build agent
Scaffolds, wires and tests in parallel
QA agent
Checks more than any manual pass could
✓
Every decision and every release is signed off by a person
How we work_
A clear path from opportunity to production.
Strategy, design and engineering stay connected, with clear decisions,
regular progress and direct access to the people doing the work.
Step 1
01 - Map
We get clear on your users, business goals, existing systems and constraints. Then we identify what's worth building and where AI can help.
Users, goals, systems and constraints mapped
Where AI can genuinely help, and where it can't
Success measures agreed before anything is built
Department Tools
Process Tools
Step 2
02 - Blueprint
We shape the scope, product journeys, technical architecture and delivery roadmap. You'll know what we're building and why it matters.
Scope, journeys and architecture shaped together
A delivery roadmap you can hold us to
A clear price before build starts
Step 3
03 - Build
Designers and engineers work together in short cycles, sharing working software early. AI increases speed; people own the quality.
Working software shared from the first weeks
AI agents speed up research, build and checks
People accountable for every decision that ships
Live System
1,240
+70%
SUNMONTUEWEDTHUFRISAT
Step 4
04 - Launch
We prepare the product for production, launch carefully and learn from real usage.
Careful production launch, no big-bang risk
Feedback and analytics from real usage
Business results guide what we improve next
Department Tools
Process Tools
Step 5
05 - Evolve
We can keep supporting, optimising and extending the product, or hand it over cleanly to your internal team.
Support, optimisation and continuous development
Or a clean handover to your internal team
Code, documentation and knowledge included
Live System
1,240
+70%
SUNMONTUEWEDTHUFRISAT
Testimonials_
What our clients say
Real reviews from our Google Business profile. All five stars.
We've recently completed Phase 1 of a bespoke business valuation tool with James at Code23, and I've been extremely impressed. He has taken the time to understand both the commercial and technical requirements, communicated clearly throughout, and delivered a well-thought-out system with a high level of flexibility. The admin dashboard, in particular, gives us full control over the scoring and valuation logic, which was a key requirement. I'm looking forward to working with James on Phase 2 and would have no hesitation in recommending him to anyone looking for bespoke software development – Jason Atkins, Director, Lansley Commercial
JA
Jason Atkins
Google review
We worked with Code23 in the Autumn of 2021 as a potential website development partner for our new company website. We immediately felt confident that Code23 could deliver a fantastic quality product and that they knew exactly what to do to take our digital presence to the next level. Fast forward 3 months, and with zero delays to our project, and we're delighted with our newly launched website. The styling, functionality and overall build quality is exceptional, and in the eight years that I've worked with web agencies, this is by far the smoothest migration and launch that I've been involved with. I would highly recommend Code23 as a website development agency.
SR
Sam Roberts
Google review
I've been Code23 client for 5 years (and my website has been with the company from the start). James and his team is always responsive to any support I need and did an excellent job in re-designing and re-building our marketplace website. This was a very complex job with separate shops/payments/blog/categories and everything was custom coded and designed for our website. It was great to be part of the re-design process and working with James and his team has been a truly positive experience. Code23 has also provided our hosting and on-going support, back ups, online security and maintenance. Definitely recommended to anyone who is thinking of having their website designed by professional team - you'll be in a good hands!
MM
Magdalena Marsden
Google review
We couldn’t be happier with the service from Code23. They were a pleasure to work with—friendly, professional, and really took the time to understand our needs. They met our brief perfectly, delivering a website that looks great and performs exactly as we envisioned, all at excellent value for money. What sets Code23 apart is their aftercare. Knowing they are on hand to monitor and maintain our website means we never have to worry about its performance. Their ongoing support gives us complete peace of mind, and we’d highly recommend them to anyone looking for a reliable and skilled web development team
DI
Dan Isterling
Google review
It has truly been a fantastic experience working with the Code23 team. Every part of the process from the scoping and onboarding down to the design and implementation of our website was handled excellently. The quality of service delivered by the team is globally top standard and I couldn't be more satisfied with the final outcome.
SE
Samuel Elili
Google review
Having turned to Code23 after a bad experience with another web designer, I can confidently say that the service James, Joe and their team provided is exceptional. They are incredibly receptive, professional and patient. They listened to my "vision" and together with their knowledge and experience delivered an e-commerce website which is perfect, even better than I though it could ever be. Throughout the process, James and Joe were always on hand and easy to communicate with and would send regular updates. I am particularly appreciative of the time, care and dedication they put into this project. Many thanks for making me the website of my dreams!
EM
Eve Moira
Google review
After using a Marketing agency to design my first website, they done quite a shabby job and making amendments only made things worst. Shortly after I used several different freelancers with the majority of them promising great outcomes but falling short on delivery, I came across Code 23 almost half a year ago with little faith in finding a good development team. I had a thorough conversation with director James who assured me he and his team could help and introduced me to some great options in design for an affordable price. I was introduced to Project Manager Joe shortly after. My website development and design are near its end and I’m glad I met the team. Joe is great with feedback, patience and understands me as a client. I’d like to also thank Isaac and the rest of the team in producing a stunning, professional and sleek website. I’ll definitely be using the team for continued work and future projects! Thank you!
OG
Our Graduates
Google review
James and his team at Code23 have recently provided us with a brand new website with a responsive design that looks great on any device. Being based on the WordPress platform it's easy for us to manage the content ourselves, which allows us to keep the website fresh as new products and industry news arrives. There are lots of ways of getting websites built, but choosing Code23 turned out to be a great investment for us. James and his team are at the cutting-edge of web design and technologies, and after initial discussions they completed the build needing very little input from us thereafter. We're very pleased with the final result - James understood exactly what we were looking for and managed to make the whole process exciting rather than tedious. Highly recommended!
SH
Steve Huse
Google review
Code23 were the best company I could have found to start my new business website. Despite it being a relatively hard to explain idea, James and the team understood exactly what the site's function was and built a brilliant bespoke design to fit my needs. Even going the extra length to recommend ideas and tweaks that I hadn't thought of to improve the way it runs and deliver something that I am proud to have as the main online front for my business
CB
Chris Bound
Google review
Code 23 are a first class web design agency. James, Joe and their team are a pleasure to work with and made the process very easy from a client perspective. I was impressed with their ability to work up briefs quickly, their ability to keep to deadlines and the quality of the site that they delivered. They are highly recommended and an agency we will continue to work with on other projects.
WT
Wilde Toast
Google review
I have worked with Code23 and their team for over 5 years across 3 different projects ranging from mobile app development to custom WordPress websites. Together the team bring a level of expertise and professionalism I have not seen anywhere else... The results achieved have really helped to grow our business. I highly recommend their services to anyone looking for a custom project to be completed on time and in budget.
AC
Alexander Campbell
Google review
James Ansell really understands the technology behind building a robust and search engine friendly website. Code23 manage web design and build projects extremely efficiently, with complete visibility throughout the project. As a marketing agency, I need technical partners that are more than just efficient. James and his team think creatively throughout every project, ensuring that the finished site really brings the proposition to life, is easy to navigate, and the right fit for clients' needs.
RH
Rebecca Holland
Google review
In my eyes James is a genius! We worked together several years ago when I decided to go freelance as a PowerPoint presentation designer. He played a huge part in getting me set up to go it alone and has supported me ever since. In all honesty, at times I don’t know what I would have done without him. He is not only technically savvy but a brilliant web designer. He understands my limitations when it comes to IT and has always been there whenever I have needed help at the drop of a hat. I would absolutely recommend code23. They are true experts in their field and will always be there to help in whatever way they can. Highly, highly recommend them!
RD
Rachel Deadfield
Google review
I am a professional Sports Massage Therapist, whom Code 23 created my website, branding and helped me through the start up of my new business. James at Code 23 was not only my web designer but also my mentor as I was new to business. James and the team at Code 23 helped me through creating the website, which would be best for me and my business. I found James was very approachable, professional, knowledgeable and honest as well as the quality of his work being at the highest of standards. I would not hesitate to recommend Code 23 to anyone in the future.
GK
Greg Kimber
Google review
Code23 undertook a large redevelopment project for us, including the rollout of over 100 individually branded websites. The overarching goals of the project were to improve: 1. Our Flexibility & Control 2. Customer Experience 3. Transparency Around Pricing All of which were delivered to an excellent standard, especially the new custom quote builder, which is industry leading! We look forward to continuing to develop these websites and build on the relationship with Code23 in future. Great work team!
FP
Funeral Partners
Google review
James and the team have provided web design, hosting and ongoing support to our business (Universal Science Ltd) for a number of years and they have never failed us. Response to enquiries is always fast, friendly and accurate and I know I can rely on Code23 to do what they say, when they say. James is really on top of his game and knows every detail of our setup and can always advise on what else we could be doing or improving. Overall, an excellent business partner!
JV
Jason Vaughan
Google review
It's safe to say Code23 rescued an interiors-obsessed creative - with zero tech savvy - but with a big e-commerce vision! The talented team at Code23 assembled my website graphics, layouts and shop brief with a Wordpress e-commerce theme to create a secure, functioning website that I am proud of. They also oversaw the 'go live' and future-proofed the backend (to the extent that is possible!) and now maintain my site with daily checks and updates. They were a pleasure to work with, always at the end of the phone and took my lack of technical knowledge in their stride, guiding me through processes as necessary. Highly recommend.
AS
Annabel Smith
Google review
What can I say! We are over the moon with our new company website. :) Code23 have most definitely got the 'WOW' factor. Eye catching design, superb user experience and extremely well project managed end-to-end. It was hassle free and the end result is far better than we ever imagined. I can't recommend enough. Thank you to James and the team. Top service!
CK
chanelle kirkum
Google review
We worked with Code23 for a complete rebuild of our music related website. Excellent customer service and quality throughout and the build they have now completed is fantastic - exceeded all expectations across the board. Fantastic company with a dynamic and motivated team who are great to work with. Would highly recommend!
NF
Nathan Fullbrook
Google review
We approached Code 23 at a time when we had been let down by our previous website design & management contact and from the very first email exchange, it was clear we were dealing with an excellent company. James, Joe and their team are always on hand to provide the advice and reassurance we need for all things web and digital. In the short time I’ve worked with them so far they’ve provided a fully managed service for our website, made significant improvements to its design and set up, and somehow managed to create a very complicated custom plugin development work seamlessly for our property sales and lettings element of the business - all whilst talking in plain English and not baffling us non-technical people with jargon. If you’re looking for a digital agency that will go the extra mile without being asked, provide clear, transparent costings, with work delivered by good honest people then Code23 are the company for you.
KG
KatieLocal Guide
Google review
Code 23 took the time to understand our companies needs and designed our website accordingly. James was always available to guide us through when I needed help. The design was bold and engaging and with help from Code 23 we have been able to keep it updated and fresh. A great company to work with.
HE
Hazel Eastlake
Google review
After four years, my business website needed a refresh and I turned to Code23. They were full of great ideas, helpful and patient, turning my requests and ideas into something tangible. I’m incredibly happy with the end result and wouldn’t hesitate them to anyone looking for web design support.
DR
Dr. Richard MacKinnon
Google review
The results of Code23’s hard work, professional approach, and ability to work together with us to create our vision, has resulted in an end product that we couldn’t be happier with. They have provided us with a fully rounded service, including plenty of support, advice, and guidance for the future too. We are all very excited to welcome our customers back to our wonderful new e-learning platform.
JC
Jake Carter
Google review
Code23 totally redesigned and rebuilt my online marketplace (WowThankYou) nearly 3 years ago, and have continued to support the site, and us, ever since. When things go wrong, they are quick to sort it. When we have questions, they go out of their way to answer us, and when better technology comes along that we ought to consider they tell us about it. Without James and his team I couldn't guarantee we'd still be trading! On behalf of WowThankYou, and myself, I can wholeheartedly recommend Code23 if you want a dynamic, stand-out website with the security of brilliant ongoing support. We look forward to many more years association with Code23
TK
Tracey Kifford
Google review
We have used Code23 for many of our website projects and they have been absolutely fantastic every time. They ensure that meetings are held to discuss the particular project needs, they set clear timelines and stick to them, they are always on hand for client support (e.g. calls/meetings with client to take them through processes.) The team are always easily contactable and happy to help with any queries and most importantly, their work is outstanding!
B
BH&P
Google review
We've worked with Code23 for many years now. They designed our first website and have been working on our SEO for a year or so now. On the back of this they've completely re-designed our site, which has just gone live. We're delighted with it. Code23 give excellent service - always professional, prompt and technically superb. Many thanks to the team.
FH
Franny Hornblow
Google review
Working with Code23 on CIS's fantastic new website has been a pleasure from start to finish! I would highly recommend their web services to anyone looking to bolster their digital presence. Having worked with several web designers in the past, I can confidently say that Code23 is a cut above the rest. Thank you to everyone at Code23 for your professionalism, hard work and vision.
ON
Oliver NewtonLocal Guide
Google review
After wanting to up my game with my marketplace website I found Code23. They made switching web agencies really easy and have consistently provided great support, thoughtful suggestions and advice to improve the website thats has helped me focus on growing the business. The team are super responsive which is very reassuring for a non-techie!
TA
Team Admin
Google review
James and his team are very talented, energetic and ambitious ... as much in supporting our business as in also developing their own. Very clever, very quick, on the front-foot, spot-on detail. No smoke nor mirrors, but straightforward and honest. We are delighted to have found them and very grateful for their help in making our new business flourish. Very, very, very highly recommended.
TT
Teachers To Your Home
Google review
We have been working with James and the team at Code 23 for about 18 months now on a lengthy and sometimes complicated app development. At all times we have found Code 23 to be calm, competent, and their advice has been invaluable. The app is now live and we are extremely pleased with the results and are happy to continue our relationship with Code 23 for enhancements and hosting. We would be pleased to recommend Code 23.
SC
stuart campbell
Google review
A real pleasure working with Code 23 who, from the beginning listened to our needs, were able to navigate the challenges that arose during the project, and had the expertise to deliver a secure and future proof site. We really valued their flexibility to adapt, without compromising the creative direction and functionality.
LP
Laura Pride
Google review
I have used Code 23 on 3 different occasions over the last 7 years. Every company I have worked for has had a very different requirement and Code 23 designed and built 3 completely bespoke sites. James is always on hand to answer queries. I highly recommend Code 23. I wouldn't even consider another web agency.
HE
H EastlakeLocal Guide
Google review
James has provided us with expert advice and built two websites, both of which receive glowing feedback from our clients. James is on hand to answer any queries and always provides excellent customer service. We do not hesitate to contact him whenever we have any web-related issues.
TW
Theale Wellbeing
Google review
We've engaged Code23 on multiple web projects over the last 7 years. Their professional approach, insightful advice and personalised designs have helped turn our ideas into websites that generate business. The team at Code23 treat our brand as if it were their own, and they're always willing to go with extra mile. They're worth every pound we've spent with them.
JG
JLocal Guide
Google review
As a professional trying to struggle with the less than perfect IT provisions of the (IT-clueless) NHS, Code23 has been a breath of fresh air! Code23 has been phenomenal in helping me set up and in supporting my specific non-standard projects. I was particularly impressed by how friendly, approachable and versatile they were, treating me with patience and understanding. A friendly, approachable, efficient, versatile and highly professional service!! Many thanks Code23...
SK
S KLocal Guide
Google review
The team at Code23 were extremely professional, patient and proactive with the build of our new website, providing added value through polite suggestions on improvements and an experienced insight into how we could improve our SEO. We look forward to working together on future projects.
NV
Niels van Gijn
Google review
We wanted to update our site to an ecommerce site with the latest social media links. James had previously built our site so changes like these could be made with the least disruption and cost. We were thrilled with the results. As always James took the trouble to clearly understand our needs.
EH
Elizabeth Hibberdine
Google review
I have worked closely with Code23, James in particular, for over a year now. They have been more helpful, more knowledgeable and more willing to go the extra mile than any other web developers that i've worked with in the past. I would strongly recommend Code23 for any website & app development.
AC
Alex CampbellLocal Guide
Google review
Joe and the team at code23 have done a fantastic job helping us design and build our new website. I feel they really captured the quality of the Draks brand. Would highly recommend.
LS
Louise Sellar
Google review
James Ansell really knows his stuff... and goes over and above the call of duty in my opinion. He's done everything we've ever asked and more. We are always getting comments about the look and feel of our website and how easy it is to navigate and use. This is all down to James. I would highly recommend James to anyone without a moment of hesitation.
VF
Vernon Francis
Google review
We've worked with Code23 on a number of projects now, both under Total Fundraising and Sponsor.ie. The results have always exceeded expectation and the service is great. I would have no issue recommending them and will continue to use them in the coming years.
SS
Simon ScriverLocal Guide
Google review
Working with James at code23 was a pleasure. I found it very professional and I was extremely happy with the service they provided. He went above the call of duty with additions and revisions, and I couldn't be happier with the final product they produced.
SN
Shane N
Google review
Our website needs have been looked after by Code 23 for many years. We have successfully developed a number of websites together and we have always found Code 23 to be excellent to work with. I would highly recommend Code 23 to anyone looking for a professional, efficient and friendly website designer.
A
Adam
Google review
We chose Code23 to build our new website and we were not disappointed! A great service from start to finish, creative, professional and friendly. Can't fault them.
HV
Hannah Vincent
Google review
Code23 always give us a fast and friendly service where nothing seemed to be too much trouble. All the tweaking requests were gladly implemented by them which greatly relieved my mind as some things you simply can't know until its already done. It felt just like a friend was setting it up for me and teaching me how to use the various backend functions.
MM
Martin McNeill
Google review
James is uber efficient! A resolution, response and or answer is back within a very timely manner, no chasing is required. James is clearly "at one" with IT and technology, however, he understands not everyone is as comfortable with code and jargon. He pitches his communication to suit your level of understanding which is such a relief! Thank you James and code23 for your on-going support. Cat from ABCpure
BW
Ben Webeck
Google review
We've worked with Code23 for many years now with our current site and we are in the process of building a new site with them. Very happy with the level of service and responsiveness, would highly recommend their services.
VR
Vintage Roots
Google review
I approached Code 23 for help with security on my website. They were helpful, receptive, friendly and professional. The work was completed in less than 24 hours and the few inevitable follow up glitches were dealt with immediately. Very pleased and have already recommended them to others.
NO
Nick Owen
Google review
Code 23 are consummate professionals and I could not be more thrilled with the website they designed for me! With the minimum of fuss, maximum care, they guided me through the process and accommodated every one of my requests. I recommend them to absolutely everyone. You won't find better, I guarantee it.
LA
Lucy Abrahams
Google review
James is very knowledgeable and is great to work with. He has been very responsive and helpful. We look forward to continuing to work him and his team.
PD
Paul Dawson
Google review
Code 23 delivered a great website for me on budget and on time. They are a great team to work with and highly professional. They simply get the job done,
LR
Luca Rado
Google review
Can't recommend these guys enough... really great service with expert advice. The technology they managed to integrate into our self service kiosk was outstanding and went the extra mile to make sure everything was as we wanted. Great job guys, i'll be engaging with Code23 for any future upgrades and add ons required TAN
TR
T-A-N Reading
Google review
Code23 have provided great guidance and advice for my a site they created for a new business. Highly recommend genuine people that offer a first class service.
DM
Dhreen Malam
Google review
I'm incredibly impressed with Code23 - they have been a pleasure to work with which has been a breath of fresh air! They are professional and are always quick to respond. Thank you Code23! Highly recommended!
JB
Jennifer Butler
Google review
Fantastic! Nothing was a problem for James and the team at Code23 when it came to delivering our website. Cant wait to see how its recieved in the big wide world now!
NM
Nic Morgan
Google review
Joe, James, Steve and Phil are an absolute pleasure to work with. I am looking forward to working with them again soon
SM
Scott Marshall
Google review
James is great to work with, gets things done and produces high quality work :)
JS
Jeni Sanderson
Google review
Pleasure to work with and very happy about the design element, general service and performance of Code23
WF
Williamson Fine Teas
Google review
Such a pleasure to deal with such a professional and knowledgeable company. I would highly recommend them.
JS
Jim Sidroy
Google review
Amazing shop experince with best service
AE
Ahmed EidLocal Guide
Google review
blogs_
Latest from our blog
Notes from the studio on marketplaces, SaaS and building with AI.
Code23 has been designing and building digital products since 2005.
Today, we combine that experience with an AI-native way of working
across strategy, design and development. You'll work directly with the
people shaping and shipping the work, from the first conversation
through launch and beyond.
Fig. 01 - The team, Reading studio51.4551°N / 0.9787°W
Fig. 02 - James, founderEST. 2005
Fig. 03 - Product reviewWK 34 / 2026
faq_
Frequently Asked Questions
What does AI-native mean at Code23?
We use AI through the whole delivery cycle - strategy, design, engineering and QA - and we build AI into the products themselves where it earns its place. People stay accountable for every decision and for everything that ships.
What kinds of products does Code23 build?
AI agents and automation, SaaS platforms, marketplaces, websites and mobile apps - from a first MVP through to systems that run whole businesses.
Can you improve an existing website, platform or product?
Yes. Much of our work starts with something already live: adding AI capability, rebuilding performance-critical parts, or extending a platform your team already relies on.
How does a project with Code23 start?
With a short conversation, then a mapping phase covering your users, goals, systems and constraints - so you have a clear blueprint, roadmap and price before build starts.
Do you provide support after launch?
Yes. Managed support, performance and security, SEO and conversion, and continuous development - or a clean handover to your internal team with the code, documentation and knowledge they need.
Where is Code23 based, and who will we work with?
We're based in Reading, UK. You work directly with the senior designers and engineers doing the work - no account-management layer.
What size projects does Code23 take on?
Most projects run from a focused MVP measured in weeks to multi-year platform partnerships. We're not the cheapest route - we're built for products that have to work in production.
get started_
What are you trying to build?
If you've got a product idea, a marketplace opportunity or a workflow that should work better, let's talk it through.
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