Award-winning web development agency in Swansea & Cardiff

Our expert web developers in South Wales will take you from initial concept through to launch

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Benefits of using a Swansea & Cardiff Web Development Agency

Bespoke web development to help your business stand out from your competitors.

Save Money
Save Money
Competitive rates on all forms of bespoke development, featuring a range of languages.
Fast Turnaround
Fast Turnaround
Our time management is critical to our competitive pricing and project delivery dates.
First-Class Design
First-Class Design
Stunning UI & UX design to impress your customers with any bespoke solutions.
Pro Support
Pro Support
All of our solutions are paired with full after-sales support to give you confidence in our services.

A few key elements of our web development

Project Handovers
We're always on hand to help support you if another party has let you down.
CMS Systems
Content Management Systems that allow you to update content quickly and easily.
Pricing Systems
Fully customisable ordering and quotation systems, complete with custom functionality.
3rd Party/API Integrations
Seamlessly connecting 3rd party systems to work in harmony with your business.
De-bugging & Testing
We rigorously test our development work for any security implications and performance bugs.
Automated Tasks
Improve your business's productivity and efficiency with bespoke automated solutions.
Reports and Analysis
Generate custom feedback reports on system performance, sales and more.
Video and Interactive
Think outside the box with engaging interactive video and 3D elements to impress your customers.
Everything in-between
Contact us for whatever you need and we will develop a solution for your issue.

Grow your business from as little as £4 per day with the help of our experts

Why work with a Swansea & Cardiff Web Development Company?

Specialist web developers in WordPress, PHP, MySQL, JavaScript, Java, JQuery, C#, Ajax

Thomas Design has been an established web development agency in Swansea and Cardiff, South Wales since 2001 and has helped businesses across all sectors with bespoke web development solutions.

Awesome bespoke web development projects don’t happen by accident. They’re a product of technical brilliance, technical know-how and strategic thinking. Thomas Design’s team of web developers are specialists in PHP, MySQL, JavaScript, Java, JQuery, C# and Ajax to name a few.

In today’s digital landscape almost every company needs some form of bespoke web development. Bespoke functionality and stunning UI (User Interface) design can make a huge difference to business and this is where we come in.

Our affordable bespoke web development services include but are not limited to: WordPress, Magento, CMS systems, pricing systems, 3rd party API integrations, debugging and testing, automated tasks, reporting systems and data analysis. Our experienced team of developers can design and develop software to suit any requirements you may have.

We take a consultative approach, listening intently to your needs and getting to know your business, customers and competitors. Whether you’re in a need of a simple web development project or an advanced bespoke solution, our web development team will help bring your vision to life.

What makes us different to other web developers in Swansea, Cardiff & South Wales?

  • Our development services are in demand for a reason:
  • We are innovators
  • Our prices are affordable and we never go over budget
  • We’ve worked with hundreds of clients and have years of experience
  • Our talented web designers and expert web developers are focused on your success
  • Communication with us is easy. You can even drop by the office
  • We offer quick turnaround times
  • We won’t blind you with science or technical jargon

Contact us today to find out more about how our website design & development we can help your business.

Honest feedback
from real customers


Based on 48 reviews
Jamie Reynolds
Jamie Reynolds

Really pleased with the service from all at Thomas Design - all expectations met and I'm really pleased with the outcome.

Jay Davies
Jay Davies

We asked the team at Thomas Design to design the logo for our new company and what they produced was excellent. We worked with Gareth who couldn't have been more helpful and came up with an incredible concept that we couldn't be happier with. Thank you

Carys Clargo
Carys Clargo

It's such a pleasure to review the team at Thomas Design. I was looking for a company that could not only produce a superior website, but who also offer full technical support. Thomas Design tick all the boxes. Thank you so much for your professional service. You have all been so approachable (and very patient!) throughout the whole process. I am delighted with my new website!

vienna Killick
vienna Killick

Fantastic designs, speedy service and great ideas. These guys made our online presence professional and informative for our clients. Highly recommend! Also amazing pricing structure! Thanks Guys!!!

Richard Mansfield
Richard Mansfield

Excellent service following development of a Bespoke app for ourselves. Couldn't fault the service received and the end product exceeded all expectations. Would definitely recommend to others from our experience.

Danni Day
Danni Day

Such a great experience. I had a though job for Gareth; he made the whole process easy for me with great communication. The result was perfect. If I had need for more of the same I wouldn't hesitate to contact Thomas Design.
In summary; He's well good.

Swansea Bay HR
Swansea Bay HR

I'm really happy with the service from Thomas Design. Gareth and Josh designed a website for me and adding my own content has been a breeze; the platform is easy to use even for me. I'd happily recommend Thomas Design to anyone.

Julian Jenkins
Julian Jenkins

Thomas design have made the website development and design process a breeze. Fantastic, quick customer service. Josh, was always fast to reply and help me out in the process. Josh also designed the website and I really can't fault the design, it's modern, built exactly for it's purpose and stands out. Fantastic effort by the whole team!

Our Clients

Clubhouse Brewing Company in white on a transparent background
White Boulder logo with a red icon on a transparent background
Cawdor Cars logo in red and white text on a transparent background
Clee logo in white and red on a transparent background
White Big Retreat Wales logo on a transparent background
Direct Kitchen Doors logo in green and white on a transparent background
Assured Property Packs logo in white with a red tick on a transparent background
DRS FM Services logo in white with a purple arrow on a transparent background
EFT Consult logo in white and orange on a transparent background
TJB logo in white and light green gradient on a transparent background
Neath Port Talbot Council logo on a transparent background
James & Co Property Surveyors logo in white on a transparent background
Swansea University logo in white on a transparent background
White Kaymac branding and logo on a transparent background
Include logo in yellow on a transparent background
Energise Renewable Energy in orange and white on a transparent background
Practic Creations logo in white with light blue gradient swirl on a transparent background
Automated Marketing Partners logo in white on a transparent background
Weaver Motorsport logo in blue, white and black on a transparent background
Ten21 branding with transparent background
White Unit9 logo with transparent background
Barry Male Voice Choir logo in white on a transparent background
White Sinners logo with transparent background
GBR Technical Services logo in white on a transparent background

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