Web Development agencies in London.
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 in London.
- 146 UK agencies offering web development in London
- Part of the Web Development service set
- Indexed in London
- Reviewed 18 May 2026

Forward Digital, a distinguished software development agency in the UK, excels in crafting personalised websites and mobile applications. They equip inventive businesses with customised software solutions, specifically designed to overcome individual obstacles and promote expansion. Their unique selling point is their cooperative methodology, which includes clients in every step of the development

Fat Fish Marketing, a Northern Ireland-based digital marketing agency, thrives on its data-driven approach. Renowned for its dedication to not only enhancing organic traffic but also boosting client sales, this brand shines in its speciality services such as search engine optimisation and the creation of SEO-friendly websites. Named among the Top 10 SEO Companies in the UK, Fat Fish Marketing stan

Kinsman & Co, a London-based all-inclusive marketing agency, is renowned for its extensive range of digital marketing solutions. With specialisation in pioneering video production, strategic social media planning, and effective PPC campaigns, they are the go-to agency for an integrated approach to bolstering your marketing visibility and delivering measurable outcomes. Their proficiency in devisin

Five Fifty Five is an innovative marketing firm nestled in the heart of London, UK. As a unique blend of human ingenuity and advanced AI, this agency offers bespoke marketing solutions and expert advisory services specifically designed for B2B organisations. Their distinctive methodology equips marketing departments with state-of-the-art tools and customised AI-led strategies that excel beyond the

Studiomade, a London-based strategic design and digital agency, excels in assisting businesses to thrive and launch innovative ventures through their expertise in branding, technology, and digital solutions. The agency's distinct mission sets it apart, demonstrating its ability to pivot and excel in a variety of industries. With a unique approach towards developing trailblazing projects such as us

Hi Mum! Said Dad, a UK-based design and build agency, is highly esteemed for its proficiency in innovation strategy, user-focused design, and product development. This reputable agency specialises in transmuting concepts into tangible results via comprehensive customer research, swift prototyping, and avant-garde engineering. With a proven track record of catering to globally recognised clients, H

Nerds Agency, a celebrated digital agency situated in London, UK, boasts a wide array of services such as website creation, social media handling, digital marketing strategies, brand crafting, and graphic design solutions. Their dedication to ongoing learning and development sets them apart, keeping them ahead of the curve in industry trends, and ensuring they deliver outstanding results for their

Futurice, a leading digital transformation agency, hails from Finland. The agency distinguishes itself with an exceptional interdisciplinary methodology, merging top-tier technologists, strategists, and designers. They specialise in offering ground-breaking, quantifiable digital solutions spanning various sectors. Renowned for its swift outcomes and enduring influence, Futurice works in concert wi

AndAgain, a pioneering digital agency headquartered in London, perfectly blends strategic thinking, inventive creativity, and technological prowess. Our prime expertise lies in creating digital products and campaigns for the luxury, fashion, retail, entertainment, and B2B industries. Our unique approach enables us to serve clients across both the UK and USA. We are renowned for our innovation and

Effra, a London-based web design and build agency, specialises in crafting highly functional, CMS-integrated, and mobile-optimised websites customised for start-ups, charities, and SMEs. With over three decades of industry experience, Effra sets itself apart with its transparent, agile methodology and dedication to user-centric design. This ensures not only efficient but also future-ready digital

Sixtwo, a London-based website design agency, distinguishes itself through its dedication to crafting unique, compelling websites that instigate dialogue and nurture relationships. The emphasis they place on client-centric experiences promises an enjoyable and immersive design journey. Their comprehensive, customised solutions extend from digital consulting and UX strategy to tailor-made website a

Based in the heart of London, Kitty is a leading web design and development agency specialising in crafting technology-driven solutions. Our unique approach prioritises both performance enhancement and growth acceleration, underlining user-centric experiences that are customised to meet brand and customer requirements. As an integral part of the TIPi Group, Kitty guarantees that every project is s

Brand42, a London-based independent design and digital agency, distinguishes itself through its award-winning methodology in providing strategic branding solutions. Specialising in engaging and globally adaptable digital design, Brand42 is renowned for its unique approach. The innovative one-team strategy employed by the agency successfully bypasses bureaucratic hurdles, thus guaranteeing an exped

Based in London, Odiono is a distinguished digital marketing agency renowned for its proficiency in website development, SEO, PPC, and social media marketing. In a strategic move, Odiono has teamed up with TMH Media, thus forming TMH Digital - a robust entity offering a potent mix of digital and offline media services. This alliance offers a unified approach to marketing, optimising the robust cap

Square Balloon, strategically located in London, UK, is a distinguished agency specialising in branding, marketing, and digital solutions. The unique factor that differentiates Square Balloon is their holistic approach to business enhancement, which involves offering bespoke design, technology, and marketing services, seamlessly integrated to boost business expansion and productivity. The agency i

Design Culture, a renowned digital agency in London, excels in crafting customised web platforms, e-commerce solutions and digital services for organisations with a noble cause. Our unique selling proposition lies in our unwavering dedication towards elevating brand comprehension and simplicity, whilst fuelling conversions. We ensure that digital journeys undertaken by users not only impact their

WE ARE POPPINS, a dynamic creative agency nestled in the heart of London, stands out through its all-encompassing approach. We specialise in delivering a broad spectrum of services, encompassing digital, identity, brand, marketing, and experiential solutions. Our unique selling point lies in our ability to craft immersive community experiences, setting us apart in the competitive landscape. At WE

As a leading digital agency in Farnham, Surrey, DRUM has gained recognition for its exemplary services, securing numerous accolades. Our key differentiator lies in our unwavering commitment to generating sustainable and accessible digital media. Our service portfolio spans across digital strategy formulation, website design and development, app creation, video production, and dynamic motion graphi

Crowdform operates as a pioneering venture and digital product studio, located in London and São Paulo. This brand excels in developing cutting-edge digital solutions and initiating ventures designed for the progressing web, emphasising on advancements in Web3, DeFi, and gaming sectors. What differentiates Crowdform is its comprehensive understanding of user challenges and its ability to create te

Established in 2003, Devstars is a distinguished UK-based digital agency, renowned for delivering prize-winning digital solutions. Specialising in the design of bespoke websites, the creation of innovative apps, and the implementation of AI automation, Devstars caters for the unique requirements of SMBs and startups. The agency differentiates with its pledge to deliver projects of "pixel-perfect"

NetTrackers is a premier digital solutions firm situated in London, UK. The organisation is renowned for its extensive array of services, encompassing superior UI/UX design, inventive digital marketing plans, and powerful ecommerce solutions, all customised to fortify businesses in the digital sphere. Concentrating on data-informed approaches and avant-garde technology, NetTrackers guarantees its

Zephyr Digital Agency is a holistic digital solutions firm, providing specialised services to pubs, restaurants, and traditional retail outlets located in Islington, London. Leveraging a blend of inventive creativity, technical prowess, and insightful data analytics, Zephyr Digital Agency propels businesses towards expansive growth. **Digital Strategy** - At Zephyr Digital Agency, we collaborate

Psycle Interactive, a comprehensive digital production agency, operates from its bases in Shropshire, London and Barcelona. Renowned for its innovative application of emerging and established technologies, the agency crafts customised digital solutions - including chatbots, educational platforms, machine learning initiatives and interactive marketing experiences. Leveraging over two decades of ind

Diginow is a custom web design agency headquartered in London, renowned for crafting tailored websites and digital business solutions for an eclectic mix of clients. Distinguishing itself through a dedication to utilising cutting-edge technologies such as ReactJS and Angular, Diginow excels in creating visually stunning, feature-packed websites and apps that elevate user engagement and optimise bu
AgencyIndex tracks 146 web development agencies in London. 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 London's marketing cluster, see the London location brief. The pricing, timeline and red-flag notes below apply to web development as a discipline; they do not change materially in London.
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 cities.
Other services in London.
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 regardless of city.