864 agencies indexed·Latest entry: 28 August 2026
Web Development in London · 146 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
  • 146 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 146 web development agencies in LondonAll Web Development agencies
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

Altlier logo
Altlier
Independent·London·2-10 Employees·Verified

A London-based marketing studio helping businesses become the obvious choice with thoughtful websites, branding and marketing. Our services include web design, design & motion, copy & content, social media, web maintenance and strategy & consulting.

Newton Day logo
Newton Day
Independent·London·11-50 Employees·Verified

Newton Day is a family-owned marketing company that helps busy sales and marketing leaders get more done. We take on the big marketing jobs that need clear thinking and practical action, and we automate the smaller tasks that slow teams down. Based in London, with operations across the Midlands, we work with technology, professional services, and museums and heritage organisations. Our team is approachable, experienced, and focused on making marketing work.

Synmek logo
Synmek
Independent·London·2-10 Employees·Verified

Synmek is a premier web design agency in London, renowned for delivering tailored web design and development solutions for businesses across various scales. Distinguished for its steadfast dedication to crafting SEO-enhanced, high-performing websites, Synmek not only captivates audiences, but also propels tangible business expansion. By merging proficiency, innovation and advanced technology, Synm

This is Undefined logo
This is Undefined
Independent·London·2-10 Employees·Verified

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

underscore logo
underscore
Independent·London·11-50 Employees·Verified

Established in 1999, Underscore is a cohesive collective of strategic thinkers, collaborating intensively with international partners and clients. We aim to craft engaging brand and digital strategies that captivate attention and achieve critical objectives. Our proficiency lies in attentive listening, strategic planning, and an unswerving focus on putting the "audience first" to ensure brands res

LION+MASON logo
LION+MASON
Independent·London·2-10 Employees·Verified

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.

RJM Digital logo
RJM Digital
Independent·London·2-10 Employees·Verified

RJM Digital, a London and Eastbourne-based digital marketing firm, excels in utilising AI to bolster digital marketing tactics. Offering an array of services such as SEO, web design, and bespoke Google Ads, RJM Digital aims to assist businesses in flourishing and magnetising their target audience. With a strong commitment to sustainability, RJM Digital also offers eco-friendly website solutions th

Impact Media logo
Impact Media
Independent·Essex·2-10 Employees·Verified

Impact Media® is a leading WordPress agency situated in the UK, delivering tailor-made web design, development, and support specifically for corporate clients. Drawing on more than two decades of industry expertise and a steadfast dedication to WordPress, the agency develops bespoke, user-centric websites that prioritise creative freedom, robust security, SEO optimisation, and scalability.

BOND logo
BOND
Independent·London·51-200 Employees·Verified

Bond is a leading brand design consultancy headquartered in Helsinki, with further creative hubs in Dubai, New York, San Francisco, and Tallinn. Specialising in the development of transformative brand strategies and identity systems, Bond excels in evolving fresh concepts into lasting brands. Whether it's pioneering new categories or innovating within established ones, Bond's distinct approach is

Appdrawn logo
Appdrawn
Specialist·London·2-10 Employees·Verified

Appdrawn, a distinguished custom software development agency located in Watford, Hertfordshire, specialises in creating tailored solutions that meet the distinct business requirements of their clientele. Known for its innovative and client-focused products, this brand is a standout in its sector. Expertly balancing modernisation of legacy software, mobile app creation, and database streamlining.

Passion Digital logo
Passion Digital
Independent·London·11-50 Employees·Verified

Passion Digital, a London-based digital marketing agency, excels in blending creativity with performance to create engaging campaigns that convert potential audiences into profitable leads and revenue. This agency transcends traditional boundaries by integrating data-driven strategies with content planning, thus providing customised solutions across a spectrum of services, from SEO to Amazon Adver

KOTA logo
KOTA
Independent·London·11-50 Employees·Verified

Situated in the heart of London, KOTA is a distinguished creative web design and branding agency. Our steadfast dedication to delivering visually impressive digital experiences sets us apart. We seamlessly integrate aesthetic appeal with a focus on return on investment, ensuring each project we undertake not only enthralls but also generates revenue. Specialising in strategic brand development and

AKQA logo
AKQA
Network·London·1000+ Employees·Verified

Located in London, AKQA is a renowned agency specialising in digital innovation and design solutions. They offer a wide array of services, including brand strategy, digital transformation, and experience design, utilising state-of-the-art technology such as artificial intelligence to deliver high-impact results for their clients. AKQA's distinctive selling point is their emphasis on creativity and

London Web Design Agency logo
London Web Design Agency
Independent·London·2-10 Employees·Verified

LWDA is a leading digital marketing agency rooted in London. The distinguishing factor for LWDA lies in constructing high-performing, essential websites that are reinforced with unmatched client service, guaranteeing customer fulfilment. Their specialism in customised web design and development, amalgamated with a demonstrated history of executing eye-catching campaigns across diverse media platfo

The SEO Works logo
The SEO Works
Independent·Sheffield·51-200 Employees·Verified

The SEO Works is a highly respected authority in search marketing, GEO, AI search, web development, and pay-per-click social services for distinguished brands and thriving SMEs in the UK. With a fifteen-year long track record, this agency remains committed to a single objective: boosting businesses' online customer base.

OmniFound logo
OmniFound
Independent·London·2-10 Employees·Verified

OmniFound is a forward-thinking SEO agency built for the evolving world of digital discovery. Based in 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

Blackstone-media UK logo
Blackstone-media UK
Network·London·11-50 Employees·Verified

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.

DeqVision logo
DeqVision
Independent·London·11-50 Employees·Verified

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.

Fourmeta logo
Fourmeta
Independent·London·11-50 Employees·Verified

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.

Humaine logo
Humaine
Independent·London·11-50 Employees·Verified

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.

Launch Studio logo
Launch Studio
Independent·London·11-50 Employees·Verified

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,

NEXT Digital Agency logo
NEXT Digital Agency
Independent·London·2-10 Employees·Verified

The WordPress & Magento Marketing Agency NEXT Digital Agency is a full-service digital marketing agency specialising in WordPress websites, Magento 2 e-commerce, SEO, and PPC. We combine performance-driven marketing, thoughtful design, and reliable development to build online platforms that attract the right audience, convert better, and support long-term growth.

Pod Digital Marketing logo
Pod Digital Marketing
Specialist·Leicester·11-50 Employees·Verified

At Pod Digital, we’re a Digital Marketing Agency that’s passionate about helping businesses grow. We specialise in SEO, AI search optimisation, PPC and paid social, alongside web design, data insight and intelligent automation. We take pride in working alongside you to bring your business goals to life.

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Editor's note

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.

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.