Top 100 JavaScript Development Companies in London

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Top 100 JavaScript Development Companies in London

February 2023

Looking for a top JavaScript developer in London?

If you're hiring a JavaScript developer to help you build or update a website that's responsive and interactive, consider the pros and cons of JavaScript as a programming language. Advantages include its speed because it's executed on the client-side; reduction in server load; and diverse functionality. 

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List of the Best London JavaScript Developers

  • 61
    • $10,000+
    • 10 - 49 employees
    • Watford, United Kingdom

    AppDrawn is a software solutions company founded in 1999. Their headquarters are in London and they have a second office in Barcelona. Across these 2 locations, they have a team of a dozen staff that do custom software development, web development, and mobile app development for small and medium-size businesses.

    Clients

    • Aspire Customer Communication Services
    • Imagine Property Group
    • Renteq Highways
    • HSM

    Industries

    Notable Project

    AppDrawn Software Development provided custom software development services for a healthcare firm — they led the setup of the client's CRM system. The team also applied various modifications.

    "The personal relationship and responsiveness of their senior team set them apart from other vendors."

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  • 62
    • Scheduling

      4.4
    • Quality

      4.6
    • Cost

      4.5
    • NPS

      4.7
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • London, United Kingdom

    Incepteo is an innovation-led ‘IDEA TO MARKET’ technology services firm providing 360-degree offerings starting from software development, hosting, support, and digital marketing. Our mantra is to deliver growth outcomes with entrepreneurial vision, effective user experience, and innovation. We bring start-up know-how, corporate maturity, and strategic techno- entrepreneurial experience on the table from inception to growth phases.

    Clients

    • Geodis
    • Betterlogic
    • Capium
    • Vision Engineering

    Industries

    Notable Project

    Incepteo re-platformed 14 websites to WordPress for an industrial microscopy equipment manufacturer. They created page layouts that took into account different languages and made performance improvements.

    “It was very obvious that each member of the organization who worked on our project wanted our project to succeed.”

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  • 63
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Digital product studio Series Eight is located in London. Since the company's founding in 2014, their small team of five has specialized in web design and development, UX/UI design, branding, and more with primarily small and mid-market businesses.

    Clients

    • Kuoni
    • Cardconnect
    • First Data
    • Trōv

    Industries

    Notable Project

    TBD

    "Quote."

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  • 64
    • $25,000+
    • 10 - 49 employees
    • London , United Kingdom

    AVAMAE is a software solutions agency run by a team of fewer than 50 professionals founded in 2011. Based in London, the company offers custom software, web, and mobile app development services for small and medium-sized businesses from various industries, such as business services, financial services, and health care.

    Clients

    • BetDSI
    • Strengthscope
    • Clevry
    • Buyfair

    Industries

    Notable Project

    AVAMAE Software Solutions Ltd is helping a showering products manufacturing company develop their cloud-based infrastructure using Microsoft Azure IoT Hub. Their scope includes API and IoT development.

    “AVAMAE is very responsive, and they’ve delivered everything on time and as required.”

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  • 65
    • Scheduling

      4.4
    • Quality

      4.6
    • Cost

      4.1
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 10 - 49 employees
    • London, United Kingdom

    Deazy is a small application development company. The Cardiff, United Kingdom-based agency was founded in 2016. Their services include mobile app development, custom software development, web development, ux/ui design, and more.

    Clients

    • RAC
    • Curve
    • Influencer
    • Popeyes

    Industries

    Notable Project

    A workspace company hired Deazy to deliver a digital transformation roadmap. They delivered a mobile app, a web app, and a CMS dashboard to help the client manage their office, space, and room bookings.

    “We found their ability to efficiently scale the team up and down to be incredibly useful.”

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  • 66
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 10 - 49 employees
    • London, United Kingdom

    Pixelfield is a digital agency based in London. Founded in 2012, their team of around 15 employees specializes in UX/UI design, product design, and custom software development.

    Clients

    • Raiffeisen Bank
    • Velioa
    • Went
    • WMC/GREY

    Notable Project

    Pixelfield redesigned a website of a food business to reach more clients effectively. The team presented the new services better and developed various digital products to improve the client's online presence.

    "Their personal attitude and openness were impressive."

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  • 67
    • $10,000+
    • 250 - 999 employees
    • London, United Kingdom

    SENLA is a fast-growing software development company in 5 EU locations, founded in 2012. Our team of 600+ certified technical specialists and managers has large expertise in a full-cycle development from BA to maintenance as well as separate services like QA or UX Audit. We have successfully completed over 350 projects in FinTech, Healthcare, Manufacturing and other industries.

    Clients

    • Abbott
    • Bayer
    • Accenture
    • Banx.one

    Industries

    Notable Project

    SENLA, Software Engineering Laboratory developed an electronic payment app for web and mobile. Users are able to add money to the app, transfer money to other users, make payments, and build credit.

    “The team is very professional and is dedicated to the project.”

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  • 68
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      4.8
    • NPS

      5.0
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    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Developing bespoke web and software solutions, Laracle.com is a twenty-man London-based team that embraces innovation and rises to meet clients' challenges. Working with a variety of SMEs across sectors, they primarily offer complex software, web and mobile application design and development as well as UX/UI design. They were founded in 2017. 

    Clients

    • Pepsi Co
    • Holland & Barrett
    • Seatedly
    • Venturi Group

    Industries

    Notable Project

    Laracle developed a website for a sports shooting company. During the three-month engagement, their team built the platform focusing on making it professional, easy to use, and eye-catching.

    “Ryan is very quick, prompt, and attentive.”

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  • 69
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • London, United Kingdom
    Get Web, Inc. Is a Dhaka, Bangladesh-based custom software development company. Founded in 2016, the small team specializes in custom software development, ux/ui design, e-commerce development, web development, and more.

    Clients

    • KitMyTrip
    • Next Play Live
    • Inventory Ahead
    • Dendi

    Industries

    Notable Project

    Getweb Inc. developed an IT services company's website using Laravel framework and token-based authentication. The team is also responsible for developing a CRM system.

    "I really like the new look and feel of the site, it's much easier to navigate and I love the layout."

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  • 70
    • $1,000+
    • 2 - 9 employees
    • London, United Kingdom

    Nexus Creative Agency - Web Design & Development is a web design agency. They offer web design, ux/ui design, web development, branding, and more and were launched in 2020. Their small team is London, United Kingdom-based.

    Industries

    Notable Project

    Nexus Creative Agency - Unlimited Web Design & Development helps a bridal hairdressing company revamp their website. They have created the prototype in Adobe XD and continued to provide SEO services and support.

    "Their deep understanding of all the moving parts that make a brand work is very impressive."

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  • 71
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom
    Steadfast Collective is a custom software development company established in 2014. The small team focuses on custom software development, web development, and e-commerce development. The agency is located in London, United Kingdom.

    Clients

    • National Caravan Council
    • Suffolk Libraries
    • Elemis
    • Love it Stitch It

    Industries

    Notable Project

    Steadfast Collective provides web development and maintenance services for a creative agency. They maintain and troubleshoot existing sites as well as upgrade and add features.

    "What minor blips we've had have been dealt with quickly, efficiently and effectively."

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  • 72
    • Scheduling

      4.3
    • Quality

      4.8
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Zesty is a full-service digital agency based in Dublin, Ireland, with additional offices in Belfast, Northern Ireland and London, England. Zesty was founded in 1996 and has 37 employees. Services offered by Zesty include web development, web design, and digital strategy.

    Clients

    • Ulster Orchestra
    • GAA
    • talkSPORT
    • Visit Blackpool

    Industries

    Notable Project

    Zesty provided web development services for a university. They built an MVP of the client's site to link to another institute's site.

    "Terry's ability to manage the project brought the customer experience with Zesty to a different level."

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  • 73
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 2 - 9 employees
    • London, United Kingdom

    Lemonat is a digital product design agency that was founded in 2012. Their 9-person team is headquartered in London with offices in Istanbul. They offer UX/UI design, web design, and digital strategy services to midmarket companies in the spaces of financial services, arts and entertainment, and e-commerce.

    Clients

    • Turkcell (Gsm operator)
    • Fizy (Music service)
    • Vendigo (Fintech)
    • Creativehub (Professional service)

    Industries

    Notable Project

    Lemonat was responsible for developing a petition website for a Greenpeace project. By outlining a content strategy, the team worked to illustrate the problem of air pollution through engaging storytelling.

    "It is always a great pleasure to work with Lemonat and their team."

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  • 74
    • Scheduling

      4.2
    • Quality

      4.3
    • Cost

      4.3
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • London, United Kingdom

    CTI Digital is a full-service digital agency from Manchester, UK with other offices in London and Stockport, UK. The agency was established in 2003 and now has a team of 68 that works on web development, e-commerce development, mobile app development, and UX/UI design.

    Clients

    • Greater London Authority
    • Merlin Entertainments
    • Little Greene Paint
    • Body Building Warehouse

    Industries

    Notable Project

    During an extensive engagement, CTI Digital built an initial website and later implemented e-commerce capabilities. Services included a frontend redesign and crafting a more suitable method to track metrics.

    "They take ownership of the project and go the extra mile to make sure they deliver what we expect."

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  • 75
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    SO technology is a design & technology company based in Cranfield, U.K., with an office in London. The company, founded in 2007, has a team of around ten that provides e-commerce development, web development, custom software development, digital strategy, mobile app development, UX/UI design, and web design services. SO technology serves small and mid-market companies in the e-commerce, business services, energy & natural resources, retail, and education industries.

    Clients

    • bakerdays
    • House of Hackney
    • Tom Dixon
    • Bernhardt Furniture

    Industries

    Notable Project

    SOtechnology helped a furniture and lighting manufacturer develop and design a new website to replace their existing site. They built the Magneto site from scratch and contributed their own designs.

    "I liked their approach and attitude."

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  • 76
    • $25,000+
    • 50 - 249 employees
    • London, United Kingdom

    User experience design company Athlon: digital brand and product is in London, United Kingdom; Brooklyn, New York; Toronto, Canada and Sofia, Bulgaria. The midsize agency was launched in 2009. Their team focuses on ux/ui design, product design, web design, web development, and more.

    Industries

    Notable Project

    Athlon: digital brand and product designed and developed a website for a pharmaceutical event company's rebranding project. They built the client's site from scratch using WordPress.

    "You can clearly see that there is a great culture, showing through their team."

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  • 77
    • $5,000+
    • 10 - 49 employees
    • London, United Kingdom

    Blott.io, a small mobile app development firm, is in London, United Kingdom; Johannesburg, South Africa and Colombo, Sri Lanka. They provide mobile app development, ux/ui design, product design, custom software development, and more and were founded in 2018.

    Industries

    Notable Project

    Blott.io is developing a financial services company’s website. The site features information about the company, and it’s integrated with partner APIs.  

    "Blott.io's extensive experience and business-oriented nature have made them an ideal partner to launch my platform."

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  • 78
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom
    Cynosure Designs is a web development company in London, United Kingdom. The company specializes in web development, branding, digital strategy, social media marketing, and more and has a small team.The company was founded in 2005.

    Clients

    • Continental Tires
    • Redwell Tuition
    • American Hospital
    • Anderson Ross

    Notable Project

    Cynosure Designs has designed and developed a website from scratch for a student recruitment and education consultancy company. They’ve also provided SEO, PPC, and social media marketing services.

    “We rely on them 100% blindly and are extremely happy and satisfied with their service.”

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  • 79
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 2 - 9 employees
    • London, United Kingdom

    Webdesign7 is a digital marketing agency based in London. Founded in 2011, their team of 8 specializes in web development and design, mobile app development, and digital strategy. The industries they focus on are advertising and marketing, consumer products and services, arts, entertainment and music.  

    Clients

    • Turkey Homes
    • Nissan
    • Cardiff Pinnacle
    • Nissan

    Industries

    Notable Project

    Webdesign7 provided website design and development services, as well as SEO, digital marketing, and branding.

    "We saw excellent results."

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  • 80
    • Scheduling

      4.5
    • Quality

      5.0
    • Cost

      4.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 2 - 9 employees
    • London, United Kingdom

    Market Jar is a digital marketing and design agency that was founded in 2017 and is based in London. Their team of 3 employees specializes in SEO, advertising, and email marketing for primarily small business clients in the consumer products, retail, and e-commerce industries.

    Industries

    Notable Project

    Market Jar provides social media and marketing assistance, implementing strategies designed to promote quality and increase visibility.

    “I appreciate their attention to detail.”

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  • 81
    • Scheduling

      5.0
    • Quality

      4.7
    • Cost

      4.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Made Tech is a London-based software services provider that was founded in 2010. The company employs a team of 33 that provides e-commerce development, web development, custom software development, and conversion optimization services to mid-size and small businesses.

    Clients

    • Rocket Internet
    • Finery London
    • Byron Hamburgers
    • On Running

    Industries

    Notable Project

    Working from wireframes and graphics, Made Tech built an e-commerce website for a fashion retailer. The project involved back-end development and customization of a dynamic user experience. 

    "I do like how personable they are, and how well they can articulate their deep subject matter."

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  • 82
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.7
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 10 - 49 employees
    • London, United Kingdom

    Ignite is a branding firm. They specialize in branding, social media marketing, digital strategy, web design, and more and were launched in 2001. The agency is located in London, United Kingdom; New York, New York; Milano, Italy and Port Orange, Florida.

    Industries

    Notable Project

    A seafood chain restaurant was looking to rebuild their website and make it mobile-friendly and scalable. Ignite has developed it from scratch and implemented a CMS to make reservations and order online.

    "They have a lot of experience in the food and beverage and hospitality industries."

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  • 83
    • Scheduling

      4.6
    • Quality

      5.0
    • Cost

      4.3
    • NPS

      4.5
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

     Cefar is a digital agency founded in 2006 and headquartered in Leeds, UK with an office in London. Their team of 20 provides PPC, web design, graphic design, and web development services. 

    Clients

    • BalconyUK
    • Springfield Training
    • Este Couture

    Industries

    Notable Project

    Cefar redesigned the UI/UX of a website to generate sales and achieve business goals.

    "Their technical understanding is second to none, and their creative flair is outstanding."

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  • 84
    • $1,000+
    • 2 - 9 employees
    • London, United Kingdom

    Sheer Digital is a creative digital agency founded in 2012. Based in London, the team of 4 employees specializes in web development, UX/UI design and eCommerce development. They primarily serve small business clients in financial services, consumer products & services and IT industries. 

    Clients

    • UK Law firms
    • Insurance
    • Family Office Advisors
    • Investment Brokers

    Industries

    Notable Project

    Sheer Digital designed an e-book based on pre-existing objectives. They created the book’s visuals and flow, taking into account a corporate identity and the target audience.

    "We worked together so well it was like they were at the next desk, not across an ocean in Europe." 

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  • 85
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 10 - 49 employees
    • London, United Kingdom

    REDLUX is a small UX agency. Founded in 2019, the company is based in Kyiv, Ukraine; Benidorm, Spain and London, United Kingdom. Their services include ux/ui design, web development, mobile app development, and e-commerce development.

    Clients

    • BMW, AXE DEV, RADISSON Hotels, ELVOG, SOCAR, Coastal Credit UnionSAMSUNG, ENERGIZER, RESTME, APPLAB, IMEDSERVICE, Mysten Labs, Land Rover, DS Gas Connection LTD, REDPIX, MODERN HOUSE Ltd, MyDermClinic

    Industries

    Notable Project

    REDLUX developed an e-commerce website for a food ordering app company. They also created mobile apps for Android and iPhone. Front- and backend developers and project managers were assigned to the project.

    "They created awesome designs."

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  • 86
    • Scheduling

      4.5
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    TechTIQ Solutions is a web design and development agency in London. Founded in 2017, they have about 5 employees that work with a range of clients.  

    Clients

    • Oxford University
    • Imperial College London
    • Total Active Solutions
    • Sake Sommelier Association

    Industries

    Notable Project

    TechTIQ Solutions developed a website and mobile app. Its features include online ordering in addition to ordering through Facebook and the mobile app. They continue to maintain both services.

    “They have an expert mobile app development team and always respond to our inquiries.”

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  • 87
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      3.6
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom
    Blockchain company Bitorix was founded in 2018. Their small team is headquartered in London, United Kingdom. Bitorix provides blockchain, custom software development, and web development.

    Notable Project

    Bitorix was hired by a fintech firm to extend their existing platform to enable them to sell digital assets and receive payment to their traditional bank accounts. They also configured alerts and metrics.

    "The founders are directly involved in the project, which has contributed to the outstanding results achieved."

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  • 88
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Indie Ridge Limited is a small web design company located in London, United Kingdom. Established in 2016, the team specializes in web design, web development, ux/ui design, e-commerce development, and more.

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  • 89
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • Ruislip, United Kingdom

    Apuzztech is a. They are located in Memphis, Tennessee and have a small team. The firm focuses on.

    Industries

    Notable Project

    Apuzztech developed a website for a property investment and development firm. The team built the site and made detailed amendments to it.

    "They have the communication and work ethic to get the job completed."

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  • 90
    • $5,000+
    • 2 - 9 employees
    • London, United Kingdom

    Milo Creative is a digital studio located in London. Founded in 2002, it has a team of 17 that specializes in mobile app development, UX/UI design, and web development services. They work with companies in various industries including education, health care & medical, and advertising & marketing.

    Clients

    • Sony Music
    • Paul Smith
    • WaterAid
    • MacMillan Publishers

    Industries

    Notable Project

    Milo Creative developed an MVP for a software product that works in tandem with diagnostic testing hardware. They delivered initial designs and are in the process of building a finalized version.

    "We have a very productive working relationship."

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