Connect with the most prominent and best-performing web development companies in the United Kingdom. View their awards, case studies, past projects, list of clients, reviews, rates and more to find the ideal team to create your next website.
Best United Kingdom Website Development Agency Rankings
6 Companies-Rankings updated: September 05, 2026
Every agency featured on DesignRush is vetted for expertise and client satisfaction to support your decision-making. Some listings may be sponsored.
Solving complex problems with design and technology since 2005.
As a website development agency, Infinum makes it easy to turn your boldest ideas into digital products that streamline processes and grow your customer base. Superior solutions are born from our profound experience in design and technology, helping you reimagine and elevate your business...
Top Services:
Web Development
Web Design
Mobile App Development
UI/UX Design
Software Development
Show more
Location
London, United Kingdom
Number of Employees
250 - 499
Minimal Budget
$50,000 & Up
Portfolios Count
24 Projects Listed
Infinum Services
Web Development
Web Design
Mobile App Development
UI/UX Design
Software Development
Cloud Consulting
DevOps Consulting
Cybersecurity
Staff Augmentation
IoT
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Porsche
Nike
CITI
Royal Caribbean
Philips
Bayer
T-Mobile
P&G
Universal
Virgin Mobile
Data sourced from the agency's DesignRush profile
Infinum Reviews & Testimonials
Matic Debelak Management Board Member at Modra zavarovalnica, d.d.
5.0★
Mobile App Development Review from Matic Debelak
Workstream 1: research and product strategyWorkstream 2: ETP release Technology : Vendor use Flutter framework, which allows one programming language and one codebase to create two different apps (for iOS and Android). Clearly defined roles and responsibilities, communication is clearly and respectfully, very effective project methodology, trying to understand every time how their activities fits into mission of Modra zavarovalnica, respect each member of team, etc.
Claus-Peter Mueller Managing Director at NLB Lease&GO doo
5.0★
Software Development Review from Claus-Peter Mueller
We have engaged Infinum to develop an app that would digitalise our leasing process. From creating the initial offer through the necessary financing application and client identification to the final signature – all the steps required to successfully lease a vehicle or other object can be performed in-app, freeing the users of friction and having to deal with tedious paperwork.The app itself in the background has 30+ integrations, while keeping a seamless and quick to follow process on the front for our users. That application is in production and Infinum is responsible for maintaining it and further improving. After the initial development, we have additionally expanded our scope from vehicles to other equipment. They have also developed a Leasing widget, product which enables quick financing model while purchasing a vehicle online on car seller marketplace pages. At this moment, we are still in partnership with Infinum, and their engagement is mainly focused on localising the app to other countries and supporting us in our further business expansion. The work performed was done in Ruby on Rails and React technology, with support of other services.
Anonymous VP of Marketing at SaaS Company
5.0★
Web Design Review from Anonymous
Thanks to Infinum's website refresh, the client has seen an almost 100% improvement in their website's conversion rates. The team excels at project management, using the client's own proprietary tool and also Figma very well. Their proficiency in design, delivery, and client relations stands out.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
OWDT stands as a premier web design company, branding, and marketing firm, known for its extensive range of high-quality web design, branding, and marketing solutions. Our portfolio boasts continuous, successful collaborations with renowned clients like Forbes, BP, Ocean Alexander, BMW, and the famous NRG...
Top Services:
Web Design
SEO
Creative Services
Logo Design
Branding
Show more
Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$275/hr
Minimal Budget
$50,000 & Up
OWDT Services
Web Design
SEO
Creative Services
Logo Design
Branding
WordPress Website Design
Web Development
PPC
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
NRG Park
BP
BMW
Frobes
LJA
Pape-Dawson
Ocean Alexander
Siddons-Martin
Prince
Vibrantz
Data sourced from the agency's DesignRush profile
OWDT Reviews & Testimonials
Alexander M. Kappes CEO at GREENER CROP
5.0★
Web Design Review from Alexander M. Kappes
Building a strong online presence that not only exhibited our items but also gave customers an easy-to-use buying experience was our challenge.The e-commerce site garnered praise for its user-friendly design in addition to increasing sales. Our teams' workflow was effective, and the OWDT team showed adaptability in handling last-minute alterations. It was clear from the beginning that they were dedicated to building a website that produced real commercial results.
Joel Petterson Founder at The Vested Group
5.0★
Web Design Review from Joel Petterson
Our organization wanted to have a digital presence that offered our target audience useful information and insights in addition to showcasing our services.The website gained popularity as the go-to source for our sector, drawing in both prospective customers and business experts looking for insights. The OWDT team demonstrated a profound comprehension of content strategy through their collaborative and efficient workflow. Their dedication to developing a platform that went above and beyond what we offered was quite impressive.
Ben Greenberg Owner at Inventions Unlimited
5.0★
Web Design Review from Ben Greenberg
Our task was to design a website that will not only highlight our offerings but also work in unison with our social media accounts to build an audience feeling of community.The website developed into a lively community interaction area in addition to serving as a central location for our items. The OWDT team demonstrated a strong grasp of the social dynamics around our brand, resulting in a collaborative and efficient process. It was really impressive how well they were able to combine community development with e-commerce.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
We build mobile apps, web platforms & AI workflows for organisations doing good in the world.
3 Sided Cube is a global mobile app and digital development company with a passion for Tech For Good, championing the genius over the generic to build life-saving, life-changing digital solutions...
Top Services:
Mobile App Development
Software Development
Web Development
AI Development
Digital Services
Show more
Location
Bournemouth, United Kingdom
Number of Employees
50 - 99
Average Hourly Rate
$150/hr
Minimal Budget
$50,000 & Up
Portfolios Count
5 Projects Listed
3 Sided Cube Services
Mobile App Development
Software Development
Web Development
AI Development
Digital Services
UI/UX Design
Digital Strategy
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
American Red Cross
Surfers Against Sewage
Omaze
Vodafone | Glastonbury Festival
LUSH
Global Forest Watch
The World Resources Institute
University Of Bristol
GDPC
Wonderbly
Data sourced from the agency's DesignRush profile
3 Sided Cube Reviews & Testimonials
Si Muddell Review from Google
4.0★
Si Muddell's Review Sourced from Google
Fantastically positive and driven team who on every interaction you just know care deeply about a) what they do b) what they deliver and c) ultimately the experience the end user will have.Hugely impressed with their personal, creative and energy driven approach at the pitch stage, I commissioned 3SC to help us better scope an app. Their task was to take an in-house developed app prototype, and turn it into a fully fledged technical specification with user stories, MoSCoW prioritisation, costs, and an updated look and feel; all done with audience need at the heart.Myself and the wider team have nothing but very good things to say about 3SC. When reflecting on an agency to work with, loads say they can do it, some can actually do what they say they can do, even less do it in the spirit of real partnership and mutually respect/drive. 3SC do all of these excellently. I highly recommend them.
Oliver Morrison Review from Google
5.0★
Oliver Morrison's Review Sourced from Google
A passionate team of insanely talented experts, producing industry leading technology for good causes. Highly recommend.
Kev Borrill Review from Google
5.0★
Kev Borrill's Review Sourced from Google
Great Digital agency with a passion for making great mobile apps in the Tech for good industry
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
AndAgain has an Integrating strategic insights, creative ingenuity, and cutting-edge technology, we specialize in the development of digital products, websites, apps, and campaigns that not only enhance our clients' online presence but also elevate the image of our agency partners...
Top Services:
Creative Services
UI/UX Design
Product Design
Web Design
Web Development
Show more
Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$50,000 & Up
AndAgain Services
Creative Services
UI/UX Design
Product Design
Web Design
Web Development
Mobile App Development
eCommerce Development
Branding
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
What certifications should a United Kingdom website development agency have?
A United Kingdom website development agency should have certifications related to legal compliance and information security to demonstrate professionalism and adherence to best practices.
Key credentials include:
ISO 27001 for information security
ISO 9001 for quality management
Cyber Essentials or Cyber Essentials Plus for UK-specific cybersecurity assurance
It’s also helpful if the team holds platform-specific or developer certifications, such as AWS, Azure, GoogleCloud, Adobe, or recognized frontend/backend development credentials. Membership in professional bodies like BCS (The Chartered Institute for IT) further signals credibility and adherence to industry best practices.
How long does a typical web development project take?
A typical web development project takes 6-12 weeks, depending on the site’s size, features, and design complexity. Simple brochure-style websites may be completed in 3-6 weeks, while more advanced sites with custom functionality or integrations take longer.
Content readiness, feedback speed, and revision cycles also affect the timelines. eCommerce platforms or custom web applications can extend to 3-6 months or more due to testing, optimization, and deployment requirements.
What happens after a website development project finishes?
After a website development project finishes, the agency typically conducts final testing, qualityassurance, and launchsupport to make sure the site works smoothly across all devices and browsers. They also hand over credentials, documentation, and training so your team can manage the site confidently.
Most companies offer ongoingmaintenance, securityupdates, backups, and performancemonitoring to keep the website stable and up to date. You can also choose optional services like content updates, feature enhancements, and SEO support to continue improving your site after launch.
Do web development companies in the United Kingdom offer fixed-price packages?
Yes, many UK web development companies offer fixed-price packages. When you consider a fixed-price package, make sure:
The scope and deliverables are clearly defined upfront
Payment terms, revisions, and any additional costs are transparent
There’s clarity on what happens if the project scope changes or grows
Can web development agencies in the United Kingdom work within tight deadlines?
Yes, many web development agencies in the United Kingdom can work within tight deadlines, especially when dealing with well-defined projects or smaller websites. They often streamline timelines by allocating extra resources, using proven frameworks, and following efficient project management processes.
The ability to meet a fast turnaround depends on project complexity, content readiness, and how quickly you provide feedback. For urgent projects, agencies may offer expedited services at a higher rate to ensure quality isn’t compromised.