Web Development agencies for Startup.
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. This page shows every agency on AgencyIndex offering web development for Startup.
- 43 UK agencies offering web development for Startup
- Part of the Web Development service set
- Indexed for Startup
- Reviewed 18 May 2026

We help businesses grow online without the digital jargon. Working alongside business owners and their teams, we build websites and digital experiences that actually work for real users. Our focus? Creating SEO and content approaches that connect UK brands and small to medium businesses with the people they're trying to reach. The online world is crowded and complex. We cut through that noise with

With a quarter-century of expertise, pjm:digital is a Bradford-based digital agency specialising in eCommerce. As a renowned digital agency in West Yorkshire, our forte is creating effective eCommerce strategies, crafting engaging web designs, and implementing impactful digital marketing techniques. We're proud to be a certified Shopify Partner, bringing unique solutions tailored to UK businesses

Foster & Scott is a creative marketing agency that helps brands stand out. In a world where so much marketing looks and sounds the same, we create work that gets noticed and gives people a reason to stop. You get the strategic thinking and creative quality you would expect from a larger agency, combined with the flexibility, responsiveness and straightforward communication of a smaller team.

Think Little Big Marketing is a UK-based B2B marketing agency helping startups and SMEs grow through SEO, content marketing, paid advertising, graphic design, and website development. Our experienced team delivers practical, high-quality marketing solutions tailored to your business goals.

Supplyant, a Northampton-based eCommerce marketing agency in the UK, stands out for its dedication to resolving intricate eCommerce challenges for businesses, thereby facilitating swift expansion through bespoke marketing strategies and proficient website development. Their two-decade-long collaboration with Google, coupled with an emphasis on customer experience, guarantees that each client benefits from a customised approach, triggering significant business evolution.

Launch, a dynamic marketing agency, operates from strategic locations in Glasgow, London, and Ayrshire. What distinguishes Launch is its distinctive blend of imaginative creativity and digital expertise, generating progressive communication strategies whilst proudly maintaining its status as a family-owned enterprise offering a bespoke touch. Providing an extensive array of services, Launch specia

We are a London-based digital product studio specialising in building and growing performant websites and digital products.

We're a strategic brand & communications consultancy, specialising in brand, digital and communication services for AQSE, AIM and investor-seeking businesses, helping them lead with clarity as they grow and evolve.

LION+MASON is a top-rated, strictly senior-led UK Digital Product Consultancy, specialising exclusively in the design, modernisation, and scaling of complex enterprise products and high-transaction platforms. Operating at the intersection of human-centred design and commercial strategy, the agency partners with global brands such as Johnson & Johnson, Best Western, and Cambridge University Press to drive scalable product growth and measurable business performance. Rejecting the traditional agency pyramid, LION+MASON connects clients directly with seasoned industry veterans and operates a unique, tech-agnostic "Architect Model"—remaining independent of the software engineering build phase to provide completely objective, best-fit technical partnerships without vendor lock-in. Consistently ranked by Clutch as one of the top UX Agencies in the UK and a leading global research firm, LION+MASON eschews traditional sales pitches in favour of a zero-barrier, free "Light Briefing," offering enterprise leaders immediate, expert perspective on how to bridge internal skill gaps, build competitive advantage, and architect market-leading digital products.

Angelfish Marketing is a specialist B2B SEO and AEO agency helping SaaS, technology and professional services companies get found, trusted and chosen across Google and AI answer engines.

Zinc Digital of Northampton, UK, is a leading full-range digital agency renowned for its distinctive, collaborative method. Their strategic partnership with clients cultivates bespoke designs and plans that amplify each business's unique selling points (USPs), ensuring standout design and potent marketing. Their dedication to providing premium digital solutions is apparent in their extensive servi

SK is a global, full service marketing agency, with specialisms in financial services and technology. We support our clients in building and adapting marketing strategies for success. We deliver advertising, SEO & GEO, design, copy, email marketing, PR, research, strategic consulting, web design, CRM and data strategy, social media marketing and much more to act as an extension of your team. We ar

Big On Better. At HeightOn, we do more than design and digital. We Switch On Business. Our hybrid agency integrates brand, marketing, and technology to deliver solutions that maximise brand impact, increase leads, and drive measurable results. Big On Growth We amplify brand visibility, enhance engagement, and turn clicks into conversions. Big On Strategy We don't just create; we solve, strategise

Softhunters delivers innovative IT solutions that drive digital transformation, helping businesses stay ahead through smart automation, streamlined operations, and cutting-edge technology. Our recent projects showcase our commitment to excellence, blending strategy with technology to unlock growth and success in the digital age.

OmniFound is a forward-thinking SEO agency built for the evolving world of digital discovery. Based in Mill Hill, London, we specialise in helping brands grow across traditional search, AI-driven engines, and social platforms. Our services cover traditional SEO, AI SEO (GEO), Local SEO and SEO driven web design

1284 provides industry award-winning B2B and G2B marketing and PR campaigns which champion East Midlands R&D and growth. Our work raises your profile, takes you into new markets, recruits skilled people to your team, and wins you investment.

Afloat Digital is an independent UK marketing agency built on 14 years of hands-on paid media experience. We've supported a wide range of businesses across different industries, from larger established companies to family-run retailers and start-ups. Rated 5.0 on Google. We build a custom plan around every business we work with, so you can treat us as your external marketing department while you focus on running the business.

Digital marketing agency helping growth stage businesses generate more leads, sales and revenue online.

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

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.

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.
AgencyIndex tracks 43 web development agencies for Startup. The list above is filtered to that intersection and ordered with verified and featured listings first.
For the wider editor's view on web development agencies in the UK, see the web development service brief. For context on Startup as a sector, see the Startup industry brief. The pricing, timeline and red-flag notes below apply to web development as a discipline; they do not change materially for Startup.
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 in other sectors.
Other services for Startup.
What brands ask about web development agencies.
The 5 questions our editors get most often, answered honestly. These apply to web development as a discipline across every industry.