828 agencies indexed·Latest entry: 4 June 2026
Web Development in London · 137 agencies

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.

At a glance
  • 137 UK agencies offering web development in London
  • Part of the Web Development service set
  • Indexed in London
  • Reviewed 18 May 2026
Showing 1-24 of 137 web development agencies in LondonAll Web Development agencies
Webskitters logo
Webskitters
Independent·London·201-500 Employees

Recognised worldwide, Webskitters LTD is an award-winning company, excelling in web and app design/development, alongside digital marketing. Our specialisation in these areas sets us apart, providing unparalleled services in web design and development. Our proficiency and the innovative integration of cutting-edge technologies cater to a diverse global clientele. Founded in 2010, Webskitters has e

Web Design Agency UK logo
Web Design Agency UK
Independent·London·11-50 Employees

As a top-ranking web design agency, Web Design Agency UK, based in London, delivers bespoke web design and development services to a broad client base across London and throughout the UK. Renowned for its reliability and profound experience, our agency excels in web design, branding, and digital marketing strategies. We provide all-inclusive design and development packages, specifically tailored f

Rattlesnake Group logo
Rattlesnake Group
Independent·London·11-50 Employees

Rattlesnake, a comprehensive design and technology agency, is headquartered in the heart of London. Renowned for its all-inclusive approach, the agency seamlessly blends design, development, and marketing to build more than just functional products - they craft commercially viable ventures. Their unique "From Founders to Founders" ethos, coupled with an innovation-focussed venture studio, strategi

Digital Media Ads logo
Digital Media Ads
Independent·London·11-50 Employees

Digital Media Ads, a premier Digital Marketing Agency, is strategically located in the heart of London. Our unique selling proposition is our dedication to levelling the digital playing field by offering top-tier digital marketing solutions, usually exclusive to large tech firms, to small and medium-sized enterprises. We have a proven history of boosting sales and return on investment (ROI) for ou

Digimax Derma logo
Digimax Derma
Specialist·London·11-50 Employees

Digimax Derma, nestled in the heart of Marylebone, London, is a premier facial aesthetics marketing agency. Specialising in crafting brand identities for aesthetic clinics, their expertise lies in delivering award-winning website design and Google marketing strategies. What distinguishes Digimax Derma from the competition is their extensive experience working with numerous top-tier non-aesthetic b

Online Buzz logo
Online Buzz
Independent·London·2-10 Employees

Online Buzz, a London-based inventive agency, excels in providing a holistic approach to digital marketing. Our expertise lies in creative production, web development, and digital media, ensuring innovative campaigns that engage audiences uniquely. We pride ourselves on our deep comprehension of each client's business, target audience, and objectives, enabling us to tailor campaigns that not only

Mobiteam UK logo
Mobiteam UK
Independent·London·11-50 Employees·Verified

Mobiteam, a renowned creative, design, and development agency, is strategically located in London. Best known for its bespoke web design and development services, Mobiteam excels in crafting visually appealing and top-tier websites, customised for corporate, personal, and eCommerce needs. The unique selling proposition of Mobiteam lies in its dedication to produce websites that not only captivate

Colorido Studios logo
Colorido Studios
Independent·London·2-10 Employees

Based in Twickenham, Colorido Studios stands as a leading creative agency, renowned for producing audacious and lasting designs and brand work tailored for the contemporary era. What distinguishes Colorido Studios is their strategic acumen, audacious creativity, and proficiency in delivering vibrant, impactful design that enables brands to shine in a rapidly evolving environment. With a broad rang

Drool Design Studio logo
Drool Design Studio
Independent·London·2-10 Employees

Drool Design Studio, a London-based design agency, epitomises the fusion of Caribbean and British influences. Our specialisms include website design, app development, branding, and cross-platform coding, particularly in Webflow, WordPress, and Shopify. What truly sets our studio apart is our culturally diverse team and bespoke approach to crafting immersive digital experiences. Our ethos centres a

Cirrus Design Studio logo
Cirrus Design Studio
Independent·London·2-10 Employees

Cirrus Design Studio Ltd, a premier digital design firm in Poole, Dorset, distinguishes itself with its unique offering of customised website design, personalised ERP solutions, and all-inclusive IT support. As a certified Google Partner and distinguished WIX Premier Partner, Cirrus ensures top-tier services for businesses across all scales. The agency takes immense pride in its exceptional custom

PRISM 55 logo
PRISM 55
Independent·London·2-10 Employees

PRISM⁵⁵ is a forward-thinking digital firm with its roots in Guildford and Exeter, UK. Renowned for its commitment to achieving tangible outcomes, PRISM⁵⁵ champions a cooperative, strategy-led approach that prioritises critical questioning to formulate efficient strategies swiftly. Combining cutting-edge design with advanced development and imaginative marketing, PRISM⁵⁵ crafts secure, robust, and

Chameleon logo
Chameleon
Independent·London·2-10 Employees

Chameleon is a UK and Ukraine-based digital agency, excelling in delivering powerful digital solutions for non-profits and charities. Our agency differentiates itself by harnessing intelligent technology to streamline processes, lower costs, and amplify service efficacy, thus extending swift help to a broader demographic. Solely devoted to generating social impact, Chameleon strategically employs

Thinking Human logo
Thinking Human
Independent·London·11-50 Employees

Specialising in the creation, design, and development of unique experiences, products, and services, Thinking Human partners with clients to shape world-class digital experiences. Our team stands out in the UK market for its commitment to transparency and collaborative work. With over a decade of extensive industry experience, we've had the privilege of working with several globally recognised bra

Archetype logo
Archetype
Independent·London·2-10 Employees

Archetype® is a leading creative agency situated in London, known for its comprehensive 360-degree creative solutions, with an emphasis on Arabic design and localisation. What distinguishes Archetype® is its acclaimed proficiency and the distinct fusion of in-house Arabic and Latin calligraphers and typographers who elevate the craft beyond standard expectations. This avant-garde methodology enabl

Cynosure Designs logo
Cynosure Designs
Independent·London·11-50 Employees

Cynosure Designs, a London-based digital marketing agency, specialises in enhancing brand visibility and driving ROI with additional branches in Dubai and Lahore. Renowned for our dynamic collaborations and digital marketing proficiency, we curate bespoke strategies that amplify your brand's presence. Our blend of creative ingenuity and data-led precision provides a holistic array of services, inc

Sonat Co. logo
Sonat Co.
Independent·London·2-10 Employees

Sonat Co., a London-based digital marketing agency, is renowned for its customised digital strategies and data-driven proficiency, purposefully crafted to amplify brands' online visibility and deliver extraordinary outcomes. Concentrating on digital media marketing, along with web design and development, Sonat Co. provides innovative solutions to uplift brands and propel businesses towards success

That Product Studio logo
That Product Studio
Independent·London·2-10 Employees

Product Studio is an innovative digital product design and technology agency situated in the heart of London. This unique agency excels in harmoniously merging creativity and technology, turning lofty concepts into superior digital experiences. With the adept use of advanced AI and emerging tech trends, they fuel growth and inspire innovation. Their client-focused strategy guarantees the delivery

The House London logo
The House London
Independent·London·2-10 Employees

The House London Ltd, a dynamic creative firm situated in Surbiton, London, prides itself in offering bespoke branding, motion, and digital solutions. Specialising in propelling growth for charities, social enterprises, and public sector bodies, alongside support for restaurants, hotels, clubs, and FMCG businesses, we stand out within the industry. Our unique approach blends customised strategies

Tann Westlake logo
Tann Westlake
Independent·London·2-10 Employees

Tann Westlake specialises in transforming ambitious visions into tangible results for its clientele. Our expertise spans the rejuvenation of brands, enhancing website traffic and lead generation, surpassing advertising objectives, and invigorating video content. Nestled in the heart of West Sussex, Tann Westlake partners with both national and local businesses, driving forward inventive designs an

Subism logo
Subism
Independent·London·2-10 Employees

Subism is recognised as a pioneering digital design and development studio, steadfast in driving impactful transformations for our clients and the wider global community. Our specialisation lies in fostering innovation, partnering with those who are reshaping their respective sectors. These industry trailblazers depend on our professional guidance to navigate their path forward. Our strength is ro

Tactic Marketing logo
Tactic Marketing
Independent·London·11-50 Employees

Tactic Marketing, your premier destination for superior branding and marketing solutions, houses a team of creative experts devoted to crafting unique strategies. As your go-to marketing resource, we at Tactic Marketing use focused and strategic methodologies to connect with the audience you seek to transform into loyal customers. Harnessing the power of first-rate marketing techniques, we guarant

Forward Digital logo
Forward Digital
Independent·London·2-10 Employees

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 logo
Fat Fish Marketing
Independent·London·2-10 Employees

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

Altlier logo
Altlier
Independent·London·2-10 Employees

As a leading digital agency rooted in London, UK, Altlier redefines the standards of creativity by seamlessly integrating marketing science. Harnessing the power of marketing psychology and neurodesign, we craft innovative web designs and marketing tactics that resonate profoundly with audiences. Our broad spectrum of services encompasses web design, social media marketing, SEO optimisation, creat

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Editor's note

AgencyIndex tracks 137 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.

Typical cost
£2,000-150,000+
per project

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.

Realistic timeline
4 weeks-9 months
per launch

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.

Red flags
6 to watch
in any pitch
  • · 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
Frequently asked

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.

Curated by humans

UK web development pricing splits by project type. A brochure or small WordPress site from a proper agency runs £2,000-15,000. Custom React or Next.js builds, usually paired with a headless CMS, sit at £10,000-50,000. Mid-size ecommerce lands between £8,000 and £50,000 depending on integrations. Complex web apps and SaaS platforms start around £50,000 and climb past £150,000 for enterprise work. Maintenance retainers are separate and typically run £150-2,000+ per month.