Top Software Development Companies in London

What do SXT and The Trussell Trust have in common? They’ve both turned to Bit Zesty for custom software development expertise. This UK-based agency has already made major waves with work for enterprise clients and startups alike.

When SwiftKey launched a platform targeting their unique users, Bit Zesty analyzed the entirety of their approach to refine their custom software strategy, create key features and design a strategy that would bring together all elements of the client’s brand. The result was a huge success, and continues to drive progress for the brand today.

Zerocoder is a Roseville, California-based software development firm. They focus on custom software development, web development, mobile app development, web design, and more and were founded in 2023.

With a passion for both strategy and design, Zoondia has provided mobile app development work for clients like PEAPPS. Based in India, Zoondia brings a long history of success to each project they complete.

When The First Group was just a new brand looking to make an impact, Zoondia created not only their most recognizable microsite but the entirety of their experience in this distinct area. The result was a splashy entrance into the market orchestrated by Zoondia designers and strategists.

Limeup is a product design agency based in London and was founded in 2019. They have about 50 employees that specialize in UX/ UI design, web design, mobile app design, digital product design, and SaaS services for a wide range of clients mainly focusing on financial services, business services, and e-commerce industries.

Impltech hired Limeup to design their software development firm's web pages for each of their new service offerings. Limeup adapted the overall style of the website and gave suggestions to maximize page conversion rates. The pages Limeup designed achieved conversion rates that matched and often exceeded the conversion rate of previously developed webpages. The team facilitated a straightforward design process where all feedback was recognized and all revisions quickly implemented which is why the client understood why each step was done and why it was needed and that's why the team left no room for uncertainty.

Inktrap is a UX company. Launched in 2013, the firm offers ux/ui design, product design, custom software development, and web development.

Many enterprise clients count 56 Degrees as their dependable e-commerce development experts, so it’s no wonder the company has achieved such widespread success. With years of experience in their industry, this London-based agency is certainly here to make an impact.

One 56 Degrees client is a globally recognized leader in their sector, and 56 Degrees has provided focused and wide-reaching services for the company for the entirety of their working relationship. This includes UX design, UI, overall brand presence and visuals, and more.

CM System Designs is a UK-based bespoke software development provider. The team is driven by their passion for building custom-made solutions for SMEs.

CM Systems Designs was tasked with PizzaExpress Live to build a booking management system. The team delivered a product that accounts for all the needs and requirements of the client.
 

With a passion for both strategy and design, Blink22 has provided custom software development work for clients like Careem. Based in Egypt, Blink22 brings a long history of success to each project they complete.

When Involvio was just a new brand looking to make an impact, Blink22 crafted the entirety of their experience in this distinct area. The result was a splashy entrance into the market orchestrated by Blink22 designers and strategists.

Uinno is a creative digital agency based in Ukraine and was founded in 2019. They have more than 50 employees specializing in web development, custom software development, UI/UX design, mobile app development, and AI for many clients, mainly focusing on business, consumer products & services, and financial services industries.

Genius Sports hired Uinno to build ERP software via PHP, Node.js, and Vue.js for their sports technology company. The team initially provided a POC followed by design, features, and architecture development to create an MVP version. The client's company successfully reduced the time spent on repetitive tasks by 60% and accelerated productivity by 40%, enabling employees to focus on other business needs after Uinno launched the software. Overall, the team used an agile methodology and held regular standups for ideas and requirements. 

With a passion for both strategy and design, Codest has provided custom software development work for clients like Yieldbird. Based in Poland, Codest brings a long history of success to each project they complete.

When Mittmedia was just a new brand looking to make an impact, Codest crafted the entirety of their experience in this distinct area. The result was a splashy entrance into the market orchestrated by Codest designers and strategists.

3 Sided Cube won App Agency of the Year at the 2018 UK App Awards and Most Innovative App Developer at the UK Agency Awards. Their team of 30+ designers and developers has served clients in over 90 countries across the world.

The American Red Cross has long-struggled to make donating blood an appealing way to make a difference. 3 Sided Cube created a mobile app that transformed blood donation. The app allows donors to track where their blood is being used to save lives.

Softwire is a software development firm. They offer custom software development, IT strategy consulting, IT staff augmentation, mobile app development, and more and were founded in 2000. Their midsize team is London, United Kingdom-based.

Custom software development company Journi was established in 2022. The small London, United Kingdom-based team specializes in custom software development, IT staff augmentation, web development, and enterprise app modernization.

With an impressively robust client list that includes names like Hawk, STUDIO GRAPHENE empowers brands with mobile app development. Founded on design-first principles, this UK-based firm offers an emphasis on helping brands drive change.

One example of STUDIO GRAPHENE’s experience is their work for Sign Studio, one of the world’s respected brands. STUDIO GRAPHENE helped them target their audience of customers with a complete reevaluation of their strategy. This resulted in powerful engagement and an increase in perceived authority for them. 

Index.dev is an IT staff augmentation company founded in 2019. Based in LONDON, United Kingdom, the team offers IT staff augmentation, custom software development, and other IT consulting and SI.

With an impressively robust client list that includes major enterprise brands, Global Talent empowers brands with IT staff augmentation. Founded on design-first principles, this UK-based firm offers an emphasis on helping brands drive change.

One example of Global Talent’s experience is their work for one of the world’s respected global brands. Global Talent helped them target their audience of customers with a complete reevaluation of their strategy. This resulted in powerful engagement and an increase in perceived authority for them. 

With a passion for both strategy and design, Theodo has provided custom software development work for clients like Admiral. Based in London, Theodo brings a long history of success to each project they complete.

When BNP Paribus was just a new brand looking to make an impact, Theodo crafted the entirety of their experience in this distinct area. The result was a splashy entrance into the market orchestrated by Theodo designers and strategists.

Their clients include major enterprise clients like Aparici, but Ester Digital is a UX and UI design agency that hasn’t lost its focus on innovation or creativity. This Switzerland-based firm helps organizations around the world focus their strategy for greater success.

If you want to see how Ester Digital helps brands communicate with their audiences in a unique and crowded space, look no further than their work for Toptal. Ester Digital helped them define a strategy for their audience to improve their reach.

E-commerce development firm Default-Value was founded in 2009. Based in Cherkasy, Ukraine, their midsize team offers e-commerce development, custom software development, application testing, application management & support, and more.

Their clients include major enterprise clients like TOAD, but TECH ALCHEMY is a mobile app development agency that hasn’t lost its focus on innovation or creativity. This London-based firm helps organizations around the world focus their strategy for greater success.

If you want to see how TECH ALCHEMY helps brands communicate with their audiences in a unique and crowded space, look no further than their work for Copofi. TECH ALCHEMY helped them define a strategy for their audience to improve their reach.

What do The Times and Wall Street Journal have in common? They’ve both turned to Clock Limited for mobile app expertise. This UK-based agency has already made major waves with work for enterprise clients and startups alike.

When Northampton Saints launched a platform targeting their unique users, Clock Limited analyzed the entirety of their approach to create key features and design a strategy that would bring together all elements of the client’s brand. The result was a huge success, and continues to drive progress for the brand today.