Web Development agencies.
Web Development is the technical build of a website or web application: writing code, configuring the CMS, wiring up integrations, and shipping a stable, performant product to production. It sits alongside web design, which is the visual and UX work, and is the discipline commissioned when the brief is to build, ship, and maintain.
- 484 UK agencies offering web development
- Across 41 UK locations
- Reviewed 18 May 2026

Leading SEO and Digital Marketing Agency in United Kingdom.

Talk to an SEO agency, and they'll fix your SEO. A brand agency will fix your branding. But what if you don't know the problem? What if the fires you're putting out are a result of a much larger, important issue that you're not aware of? That's where we come in. We're the fresh pair of eyes who won't stop asking "why?" until we find the root cause.

Our digital marketing agency specialise in the strategy and delivery of a range of performance focused digital marketing services such as SEO, PPC, Paid Social and Display campaigns. Working closely with our clients ensuring everything is measured and tracked, we continue to deliver the results that matter

Black Stone Media is a UK-registered digital media agency that specializes in organic, asset-based marketing strategies, search engine optimization (SEO), localized copywriting, and social media growth. The firm is structured as an organic-first agency, meaning they focus on building long-term search authority and community presence rather than managing paid advertising campaigns or ad spend budgets. They act as a strategic and creative engine handling target market research, copywriting, app store optimization, social media strategy, and localized community outreach materials while collaborating with their clients' internal technical teams to deploy the work.

Full stack developers of both websites and software (CRM's etc) with over two decades of design, UI & UX. So beauty and performance are a guarantee.

Cross Origin is a branding and web design agency in Haywards Heath, West Sussex. We help ambitious businesses and charities whose organisation has moved on but whose brand hasn't kept pace. Our work covers brand strategy, visual identity, bespoke website design and development, and digital marketing, and the same team takes each project from the first brand conversation to the finished website. That means nothing gets lost between the thinking and the build.

Decima is the AI-native marketing agency eliminating wasted spend. We combine proprietary Causal ML with marketing expertise to give SMEs the ROI clarity, speed, and strategic guidance their old agencies couldn't. Our technology attributes spend to sales, builds ads and landing pages in minutes, and turns customer data into self-learning knowledge graphs that generate better ideas over time. Unlike other marketing agencies we ground every decision in a client's own performance history acting as a strategic partner. We are female owned, VC backed and have helped our customers increase their return on ad spend by 400%.

Scale your home ecom brand to £150k a month - and beyond. DeqVision is the all-in-one growth partner built for home & garden online stores. Website, paid ads, email marketing, all with the goal of getting you more revenue.

DigitSea is a full-service digital marketing agency based in Glasgow, UK, offering SEO, Google Ads, social media marketing, web development, and more. It helps businesses of all sizes increase online visibility, improve search rankings, and achieve measurable, long-term growth.

FirstMotion is a specialist AI search and GEO agency working with ambitious B2B software companies. We make sure ChatGPT, Google AI Overviews, Claude, Perplexity and Copilot recommend you by name when buyers ask for options in your category. We track your actual buyer prompts daily across every major AI platform, then act on what the data shows: content gaps, Reddit and review platform sentiment, entity signals and third-party citations. Senior specialists only, no juniors learning on your account, running as an extension of your team alongside traditional SEO and digital PR. Clients include Board Intelligence, Solve Intelligence, RELAYTO and Papaya.

FlyPost Marketing helps small and growing businesses turn digital marketing into measurable growth. We provide SEO and AI search optimisation, PPC, local SEO, social media marketing, and practical WordPress and Shopify support. Our approach is straightforward: focus on the work that can generate enquiries, sales and long-term visibility, explain what we are doing clearly, and avoid wasting budget on impressive-looking metrics that do not produce real business results.

Fourmeta Agency is an award-winning digital agency specializing in Shopify, ecommerce development, UX/UI design, branding, SaaS, AI product development, MVP development, mobile app development, and digital growth for ambitious brands worldwide.

Fresco Creative offer and deliver cost-effective SEO, web design and marketing services with a smile means more than just good value. It’s about working with a team that’s professional, approachable, and committed to your success. When great results come with great service, everyone wins. With Fresco Creative we strive to come along on your journey with a long-term and positive outlook.

Websites, local SEO and business tools for UK tradespeople. Sites from £99, live in 48 hours. Includes a dedicated portal with quoting, invoicing and job management built in.

We're a transformation partner for mid-market B2B service brands who are ready to evolve and lead. We treat brand as a commercial act that should drive revenue.

Performance Marketing for Hotels

Humaine is an AI-augmented marketing and strategy firm for B2B and retail brands. We combine human judgement with AI across strategy, brand, content, production, search and technology to build smarter growth systems and deliver measurable commercial outcomes.

JW Digital is a Manchester-based digital agency specialising in custom-coded bespoke websites, technical and local SEO, Shopify and WooCommerce ecommerce, mobile and web app development, database and API engineering, and managed hosting. We work with UK businesses across Greater Manchester, Cheshire and the wider UK.

Krishang Technolab's AI-powered software, mobile apps, and digital marketing solutions will help you expand your business faster than ever. We use creative, data-driven technology to help businesses optimize processes, increase consumer engagement, and achieve measurable results.

Launch Studio is a commercially led creative agency using design to make a difference. We work directly with founders, sales and marketing leads to understand your priorities, applying strategic thinking and creative execution so every investment in brand supports clear commercial goals. Our work spans identity systems, websites and campaigns, through to sales enablement, branded materials, print,

Boost your local visibility with Google Business Profile optimization, SEO for small businesses, and responsive website development. We help businesses grow online with affordable SEO services, faster websites, and better Google rankings that bring in more local traffic and real leads.

We are Leopard Co! A new agency with a 20-year history created through two award-winning marketing communications consultancies - Big Cat and spottydog communications - joining forces. Now together, we offer clients a full service marketing agency with specialist skills across the marketing communications mix.

Lionheart Marketing is a founder led, boutique growth agency based in Redcar, North East England, helping ambitious brands across the UK grow through Shopify, SEO, Paid Media, CRO, and CRM. We work with businesses of all sizes, with clients spanning from London, Manchester, Liverpool, Newcastle, Middlesbrough, and beyond. Our focus is simple: helping brands increase visibility, generate more leads and sales, and maximise the return from their marketing investment. Common challenges we help clients solve include: Poor Google rankings and limited online visibility Low website conversion rates Wasted paid media spend and poor ROAS Underperforming eCommerce websites Customer retention and CRM challenges Shopify development, migrations, and ongoing support Unlike traditional agencies, we take a hands on, strategic approach, working closely with clients to understand their commercial objectives and build growth strategies that deliver measurable results. Whether you're looking to improve your search presence, scale your Shopify store, or generate more revenue from your existing traffic, we're here to help.

We are a Hampshire-based digital marketing agency with over 25 years of experience building websites and online strategies that drive genuine business growth.
Brochure / small WordPress £2,000-15,000 · Custom React or Next.js £10,000-50,000 · Mid-size ecommerce £8,000-50,000 · Complex web apps and SaaS £50,000-150,000+. Maintenance retainers £150-2,000+ per month.
Brochure sites 4-8 weeks · Ecommerce 8-16 weeks · Complex web apps 4-9 months. Phases: discovery 1-4wks, design 1-6wks, build 1-20wks, QA 1-4wks, launch.
- · Refusal to hand over source code ownership or repo access on handover
- · Proprietary CMS or hosting lock-in that makes migration off the platform painful
- · Hidden offshoring with no named technical lead and no time-zone overlap
- · No SLA on bug fixes, no documented post-launch support terms
- · Can't talk fluently about Core Web Vitals, Lighthouse, or WCAG 2.1 AA accessibility
- · Suspiciously low fixed-price quotes that skip discovery and assume zero scope creep
Web Development agencies by city.
Web Development agencies for specific industries.
What brands ask about web development agencies.
5 questions our editors get most often, answered honestly. No agency-marketing speak.