What Solid State Group does

Solid State Group (legal entity Solid State Technology Limited, company number 4510864) is a London-based digital product agency founded in 2007, operating from offices on Paul Street in the Old Street (Silicon Roundabout) tech district for approximately 15 years. The firm designs and builds digital products for two primary customer segments: large enterprises (including British Airways, Unilever, NHS, Disney, Hertz, Visa Europe, Ladbrokes Coral, Racing Post, Zopa, and Glenfiddich) and early-stage startups and scale-ups (including EvolveYou, MeowNow, Dugout FC, and Pickswise). It also delivers white-label technical implementation work through partnerships with management consultancies such as Arthur D. Little.

The agency's service portfolio covers the full product lifecycle: strategy, user research, UX/UI design, mobile app development (with React Native as the flagship capability since Facebook's 2015 first release), responsive web applications, API development, cloud services (AWS, GCP, Azure), systems integration including connected hardware and IoT, and branding. Its core technology stack spans React Native, Node.js, Docker, Java, PostgreSQL, AWS, Python, Angular, .NET, React, and GraphQL, and it is a certified AWS APN Technology Partner. The firm has documented a 40% mobile build-cost reduction through shared-codebase React Native delivery, and has shipped technically demanding integrations including Bluetooth Smart Inhalers for respiratory care, Ford AppLink connected-car diagnostics for Hertz, NFC ring payments with Visa, and serverless data platforms for Racing Post.

Solid State Group is privately held and founder-owned, with no disclosed external funding or institutional investors; leadership includes co-founders Ben Rometsch and Andrew Morrison plus director Matthew Evans. Revenue is not publicly disclosed and pricing is quote-based per project. The firm derives revenue from professional services engagements acquired through direct enterprise sales (email and phone intake at [email protected] and [email protected]) plus consultancy channel partnerships. It also maintains an active open source footprint including Flagsmith (feature flag platform), RIO (LED wall library), PatientView (healthcare app), and React Native Firebase Auth, which function as both community-building assets and a partial productization signal beyond pure agency work.

Name

Solid State Group

Legal name

Solid State Technology Limited

Website

https://solidstategroup.com

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

11–50 employees

Short description

Solid State Group is a London-based digital product agency that designs and builds mobile, web, and IoT-integrated applications for enterprises (British Airways, Unilever, NHS, Disney, Hertz) and startups, specializing in React Native cross-platform development since 2015.

Ownership category

akta.pro rank

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Others

Revenue model

1. Digital Product Development Services: Project-based professional services including UX/UI design, mobile app development, responsive web apps, API development, systems integration, and branding services for enterprise clients and startups.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Solid State Group is a London-based digital product agency that designs, develops, and delivers custom digital products for enterprise clients and startups. Core offerings include UX/UI design, cross-platform mobile app development using React Native, responsive web applications, API development, cloud services, systems integration, branding, strategy consulting, and user research. The company also maintains and contributes open source projects such as Flagsmith, RIO, PatientView, and React Native Firebase Auth, and is a certified AWS APN Technology Partner.

Product overview

Solid State Group is a London-based digital product consultancy offering a comprehensive suite of design and development services. Their service portfolio encompasses UX & UI Design, Mobile App Development (specializing in React Native), Responsive Web Apps, API Development, Cloud Services, Systems Integration, Branding, Strategy, and User Research. They work with both startups and enterprise corporations across diverse industries including health/wellbeing, sports, finance, automotive, retail, and media. The company maintains active open source contributions including Flagsmith (feature flag management), RIO (LED wall library), PatientView (healthcare application), and React Native Firebase Auth. Project case studies demonstrate expertise across health apps (Hero Wellbeing, Hailie, EvolveYou), sports platforms (Pickswise, Dugout FC, Racing Post), financial services (Purely Capital, Ladbrokes Coral, Zopa), connected automotive (Hertz), payment innovation (Visa), AR experiences (Glenfiddich), and streaming media (Vuunity).

Differentiator

Problem solved

Functional benefit

Products and services

• UX & UI Design User experience and interface design services including user research, wireframing, prototyping, user testing, interaction design, motion prototypes, and high-fidelity UI design for enterprise and startup clients.
• Mobile App Development Cross-platform mobile application development using React Native, enabling simultaneous iOS and Android builds with shared codebase and native platform performance for enterprise and startup clients.
• Responsive Web Apps Responsive web application development for multi-device compatibility, ensuring products work across mobile phones, tablets, and desktop computers.
• API Development Bespoke API development services building secure, scalable APIs and integrations with legacy systems, from ground-up builds for startups to enterprise solutions.
• Cloud Services Cloud infrastructure implementation including microservices, serverless architectures, and legacy modernization, with expertise across AWS, GCP, and Azure using infrastructure-as-code practices.
• Systems Integration Integration services bringing component subsystems into unified business-critical systems, including hardware integrations, connected device solutions, and enterprise system connectivity.
• Branding Brand identity and design services for small and large businesses, delivering brand guidelines, visual identities, and creative assets.
• Strategy Management consulting and digital strategy services including team construction, business validation, and test-and-learn methodologies for product and market fit.
• User Research User research and usability testing services covering user interviews, qualitative and quantitative analysis, and actionable insights for product improvement.
• Flagsmith Open source feature flag and remote configuration management platform allowing teams to manage feature flags across multiple projects and environments.
• RIO Open source JavaScript library enabling creation of internet-connected LED walls.
• PatientView Open source healthcare application displaying patients' latest test results plus information about their diagnosis and treatment.
• React Native Firebase Auth Open source React Native library providing simplified Firebase authentication with Facebook and Google login support.

Quantifiable outcome

• Reduced mobile development cost by 40% through shared codebase approach
• +3 more outcomes

Named customers18 records

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature6 records

Partnerships

Three partnerships are on record, tiered core.

• React Native / FacebookcoreTechnology or Integration · 1 March 2015Specialists in React Native framework developed by Facebook. Team has been working with React and React Native community since the framework's first release in 2015 and contributes to existing components and open sources their own components for the wider community.
• Amazon Web Services (AWS)coreTechnology or IntegrationSolid State Group is a certified AWS APN Technology Partner, providing software solutions hosted on or integrated with the AWS platform. They have experience with AWS services including Elastic Beanstalk, Lambda, Step Functions, and various AWS architecture components for building scalable applications.
• Arthur D. LittlecoreImplementation/ SI/ Consulting PartnerWorked alongside management consultant team at Arthur D. Little on the Racing Post data platform rebuild project. SSG served as the technology partner executing the technical implementation.

Scale indicators7 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Thoughtbot: Boutique digital product consultancy offering UX, mobile and web development for startups and enterprises. Highly comparable to Solid State Group in size, service mix and React Native / open-source leaning.
• Netguru: Global digital product studio delivering web and mobile app development, with strong React Native and open-source credentials. Closely comparable to Solid State Group's enterprise-plus-startup model.
• Work & Co: Boutique digital product firm building apps, sites and platforms for global brands. Comparable to Solid State Group in its enterprise-led, design-and-engineering-blended service model.
• ustwo: London-headquartered digital product studio with services spanning UX, mobile and connected products. Direct comparable given shared geography, product-development approach and IoT integration capabilities.
• Future Processing: Mid-size software development consultancy delivering custom digital products and cloud solutions. Comparable to Solid State Group's end-to-end mobile, web and API development model.
• Appnovation: Full-service digital agency focused on web, mobile and connected experiences for enterprise clients. Comparable to Solid State Group in cross-platform delivery and enterprise customer targeting.

Broad incumbents

• Valtech: Global digital transformation agency with broad experience across commerce, content and connected platforms. Comparable as a larger incumbent addressing the same enterprise digital transformation pain points.
• AND Digital: UK-headquartered digital technology consultancy building custom software and platforms for enterprise clients. Geographic and customer-base overlap with Solid State Group.
• AKQA: Established global digital agency delivering branded digital experiences, apps and platforms for major enterprises. Comparable overlap with Solid State Group's enterprise mobile/web delivery.
• EPAM Systems: Large-scale IT and digital engineering services firm with a product engineering practice. Comparable as a much larger incumbent competing for the same enterprise digital product engagements.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/solidstategroup
• GitHubgithub.com/SolidStateGroup
• Facebookfacebook.com/solidstategroup

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Solid State Group