Rank Company Sector Region Growth Type of business
1 Brainlabs Media London 8255% Programmatic, paid social and PPC media agency
2 GoCardless Fintech London 6661% Direct debit provider
3 Exsel Group Software Scotland 3936% B2B mobiles/data and M2M mobile services
4 Smarkets Fintech London 2763% Betting exchange
5 Nervecentre Software Software South East 2702% Mobile technology clinical applications
6 KANTOX Fintech London 2331% FX management solutions
7 Peppermint Technology Software Midlands 2331% Cloud platform for UK law firms
8 WorldRemit Fintech London 2104% Digital money transfer service
9 StarLeaf Limited Software London 1860% Video conferencing in the cloud
10 FanDuel Software Scotland 1793% Daily fantasy sports company
11 PM Connect Communications Midlands 1616% Mobile content providers
12 Aquila Insight Limited Software Scotland 1343% Marketing data analytics
13 Fairsail Software South East 1277% Global human resource management system provider
14 RTX Routetrader Software London 1204% Gllobal voice, call centre and SMS exchange hub
15 RateSetter Fintech London 1175% Marketplace lending platform
16 Funding Circle Fintech London 1135% Direct lending platform for small business finance
17 Ecrebo Software South East 1127% Point-of-sale marketing platform
18 Victor Internet London 946% On-demand private jet charter
19 The Media Image Media London 846% Digital performance agency
20 Ebury Fintech London 825% Business lending and currency services
21 Secret Escapes Internet London 747% Online reduced-cost luxury holiday retailer
22 agency2 Media London 735% Social data company
23 Eagle Eye Solutions Ltd Software South East 735% Digital promotions platform
24 SIPHON Networks Ltd Communications South West 723% Cloud Telephony services
25 Farfetch Internet London 710% Online shopping platform
26 BookingBug Software London 678% Appointment booking platform
27 Vacancy Filler Limited Software Midlands 660% Cloud based recruitment software
28 Performance Horizon Software North East 603% SaaS solutions for digital partner marketing
29 Azzure IT Software North East 599% Specialist ERP solution provider
30 Epos Now Software Cambridgeshire and East 597% Cloud based point of sale provider
31 Zopa Fintech London 594% Peer-to-peer lending platform
32 Kimble Software London 575% Professional services automation software
33 Pitchup.com Internet London 548% Online agent for outdoor accommodation
34 Dealflo Software London 532% End-to-end financial agreement automation
35 HealthUnlocked Life Science London 532% Health social platform
36 Speechmatics Software Cambridgeshire and East 504% Automatic speech recognition
37 Fonix Communications London 480% Mobile messaging, payments & telephony
38 LMAX Exchange Fintech London 458% Multilateral Trading Facility for Foreign Exchange
39 In Touch Networks Internet North West 454% Online communities
40 Managed 24/7 Ltd Internet South East 453% IT and Telecommunications managed services provider
41 Horizon Discovery Life Science Cambridgeshire and East 423% Gene editing
42 Cloud Technology Solutions Software North West 412% Entreprise applications
43 Quill Internet London 407% Content marketing agency
44 Brandwatch Software South East 401% Social intelligence platform
45 CommAgility Hardware Midlands 400% Signal processing and RF modules
46 Featurespace Software London 389% Adaptive behavioural analytics
47 Skyscanner Internet Scotland 377% Global travel search site
48 Prepaid Financial Services Fintech London 367% Cashless payment solutions
49 True Potential LLP Fintech North East 337% Financial services group providing technology and business support services
50 Exco InTouch Life Science Midlands 336% Digital patient engagement and data capture solutions