Best API Management Companies in United Kingdom
The 31 best API Management companies in United Kingdom in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Tyk.io.
- Global API Management Market Will Hit USD 57.35 bn By 2032
Ranked: Best API Management companies in United Kingdom
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Tyk.io Provider of an API management platform | $41M | 29 mo ago | Series C | James Hirst Co-Founder | 2014 | WordPressMySQLPHP+31 | — | — |
| 2 | Approov Provider of mobile app protection and mobile API security solutions 40Talent top 15%Funding top 40%Tech top 44%Growth top 45% All 7 signals ▾Talenttop 15% Fundingtop 40% Techtop 44% Growthtop 45% Productbottom 48% Globalbottom 37% Marketbottom 23% Talent: Analyst team rating 5/5 Funding: Raised $6.7M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 40/100 | $7M | 15 mo ago | Series A | — | 2012 | HubSpot CMS HubAmazon Web ServicesjQuery+19 | — | — |
| 3 | StackOne Provider of integration infrastructure for connecting AI agents to applications 29Talent top 38%Moat top 39%Funding top 41%Tech bottom 48% All 7 signals ▾Talenttop 38% Moattop 39% Fundingtop 41% Techbottom 48% Globalbottom 37% Marketbottom 32% Newsbottom 18% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Moat: Editorial + unicorn rating 7/10 · 9 curated direct competitors tracked rank vs industry peers · Fliar Intelligence Index 29/100 | $4M | 18 mo ago | Series A | Romain Sestier Co-Founder & CEO | 2023 | Apple iCloud MailGoogle WorkspaceTailwind CSS+16 | — | — |
| 4 | Terra Developer of an API standardizing health and fitness data integration | $3M | 67 mo ago | Seed | — | 2020 | Node.jsTailwind CSSReact+21 | — | — |
| 5 | Hitch Platform for API community management | $793K | 126 mo ago | Deadpooled | — | 2016 | — | — | — |
| 6 | Spherical Defence Labs Provider of API security software | $6K | 115 mo ago | Seed | — | 2015 | — | 2 patents Anomaly detection in telecom application-layer messages for network security | — |
| 7 | Rest Secured API security testing solution | — | 127 mo ago | Deadpooled | Radosław Stankiewicz Co-Founder | 2015 | — | — | — |
| 8 | API Kaizen Web based API Testing | — | — | Deadpooled | Robin Birtle CEO & Director | 2014 | — | — | — |
Top 7 API Management companies in United Kingdom
#1
Series A · Edinburgh, Scotland · founded 2012 · 7 employees$6.7Mraised▾
Provider of mobile app protection and mobile API security solutions. It offers runtime application self-protection, verifying trust and mitigating threats. The company secures devices, applications, APIs, and communication channels. It provides real-time threat analytics for visibility into mobile app security. The company delivers secrets just-in-time to attested applications at runtime. It offers attestation solution for mobile apps and their APIs.
- Aug 2025Series A$6.7M
#2
Series A · London, England · founded 2023$3.6Mraised▾
Provider of integration infrastructure for connecting AI agents to applications. It offers tools for connecting, optimizing, and securing AI agents' interactions with external systems. The infrastructure supports connecting to various APIs and protocols. It optimizes context, token usage, and execution reliability. The platform secures interactions through permissions, audit trails, and prompt injection protection.
- Apr 2025Series A$20.3M
- Nov 2023Seed$3.8M
- Mar 2023Seed$310.4K
#3
Series C · London, England · founded 2014 · 22 employees$40.8Mraised▾
Tyk is an API management platform that consists of an open source API gateway, analytics unit, dashboard and a developer platform. The dashboard allows the user to maintain, manage, promote, and protect APIs using the gateway combined. It comes with built-in analytics tool for providing the user with actionable information about how the API is being consumed. The company claims that their gateway is capable of handling approximately 2,000 requests per second with sub 85ms latency. The platform can be deployed on premises, hosted on the cloud, or offered as a hybrid solution.
- May 2024Series C—
- Sep 2021Series C$35M
- Apr 2019Series A$5M
- Feb 2017Seed$670K
#4
Seed · London, England · founded 2020 · 7 employees$2.8Mraised▾
Developer of an API standardizing health and fitness data integration. The API facilitates structured and efficient access to data from various sources. It offers tools for streaming real-time data from wearables. The API also provides health scores, reward systems, and blood test data integration. It supports workout plan integration and data simulation for testing purposes.
- Mar 2021Seed$2.8M
#5
Deadpooled · London, England · founded 2016 · 3 employees$793.2Kraised▾
Hitch provides a platform for API community management. It helps API owners engage with and grow their API community. It stores all the API documentation in one place and provides private, public, and custom levels of access, to the internal team and developer community. It also provides automated version control and history changes.
- Apr 2016Seed$793.2K
#6
Seed · London, England · founded 2015 · 8 employees$6.1Kraised▾
Spherical Defence Labs provides API security software. Product Spherical Defense is a Web Application Firewall (WAF) that learns grammar and syntax of the structured data from trusted sources, then establishes a baseline and thus detects anomalous traffic passing through it. Other solutions include penetration testing and vulnerability assessment to the enterprise. Founded by Dishant Shah and Vasuman Ravichandran. Main customers include Paytm, Citrus, Oye Rooms, Crown it, HSBC, and NITT. Finalist at February 2016 batch of UCL Entrepreneurs VC Fund, UK. Selected as one of the 11 startups for the first cohort of Wayra, the GCHQ-backed startup incubator and received a grant of 5k Euro. Also, selected for UK spy agency for a cybersecurity programme
- Mar 2017Grant (prize money)$6.1K
- Feb 2016Seed—
#7
Deadpooled · London, England · founded 2015—raised▾
Rest Secured provides cloud and on-premise based solution to test API against malicious penetrations. Integrates with existing software development life cycle to find vulnerabilities. Users need to submit an API specification, such as Swagger, to start testing it. Also provides reports with the found vulnerabilities. Integrates with slack, heroku, github and bitbucket. To identify vulnerabilities tool sends malformed requests to API and analyzes the responses. Tests against the industry standard OWASP Top 10 security vulnerabilities including black box testing and input validation.
- Mar 2016Seed—
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of API Management coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.