| 1 | Deliveroo | Software | London | 15,749% | Online food delivery platform | 
| 2 | Checkout.com | FinTech | London | 15,548% | Online payment platform | 
| 3 | Hostmaker | Software | London | 6,445% | Home rental management platform | 
| 4 | Darktrace | Software | Cambridgeshire and East | 4,829% | Cyber security software | 
| 5 | Adaptavist | Software | London | 4,024% | Online IT services company | 
| 6 | Paddle | Software | London | 3,858% | Integrated software sales platform | 
| 7 | Onfido | FinTech | London | 3,857% | Identity verification engine | 
| 8 | Stratajet | Software | London | 3,651% | Online private jet charter | 
| 9 | Ometria | Software | London | 2,905% | Customer marketing platform for retailers | 
| 10 | Lending Works | FinTech | London | 2,832% | Loan provider | 
| 11 | Thoughtonomy | Software | London | 2,650% | Automation platform for workforces | 
| 12 | Synpromics Ltd | Health Care & Life Sciences | Scotland | 2,485% | Health company specialising in gene control | 
| 13 | SoPost | Media & Entertainment | North East | 2,357% | Online product sampling platform | 
| 14 | Bloom & Wild | Software | London | 2,098% | Digital letter box flower delivery | 
| 15 | Laser Wire Solutions | Hardware | South West and Wales | 1,944% | Cable and wire stripping technology | 
| 16 | Unify Communications | Software | South West and Wales | 1,915% | Integrated business communications | 
| 17 | Optal | FinTech | London | 1,850% | B2B payment solutions | 
| 18 | Azimo Ltd. | FinTech | London | 1,654% | International money transfer platform | 
| 19 | In Touch Networks | Software | North West | 1,524% | Online communities | 
| 20 | Landbay | FinTech | London | 1,467% | Buy-to-let investment and borrowing provider | 
| 21 | carwow | Software | London | 1,411% | Online car dealership | 
| 22 | Adludio | Media & Entertainment | London | 1,264% | Sensory advertising | 
| 23 | VIRTUS Data Centres | Communications | London | 1,230% | Data centre provider | 
| 24 | Receipt Bank | Software | London | 1,186% | Automated accounting and bookkeeping | 
| 25 | City Pantry | Software | London | 1,140% | Online food delivery platform | 
| 26 | TransferWise | FinTech | London | 1,107% | Online money transfer service | 
| 27 | Solentim | Health Care & Life Sciences | South West and Wales | 1,106% | Innovative platform for cell line development | 
| 28 | LendInvest | FinTech | London | 1,042% | Mortgage and property loan investments | 
| 29 | Fruugo.com | Software | North West | 1,014% | Online marketplace | 
| 30 | Impression | Media & Entertainment | Midlands | 949% | Digital marketing agency | 
| 31 | Smarkets | FinTech | London | 948% | Betting exchange | 
| 32 | Cloud IQ | Software | London | 945% | E-commerce conversion technology | 
| 33 | GoCardless | FinTech | London | 931% | Direct debit provider | 
| 34 | Zappi | Software | London | 842% | Consumer insights platform | 
| 35 | iwoca | FinTech | London | 817% | Business loans provider | 
| 36 | Lockwood Publishing Ltd | Media & Entertainment | Midlands | 777% | Entertainment platform developer | 
| 37 | Chameleon Technology (UK) Ltd | Environmental Technology | North East | 713% | Smart meter technologies | 
| 38 | Kaizen | Media & Entertainment | London | 712% | Digital marketing agency | 
| 39 | The Lead Agency | Media & Entertainment | North West | 662% | Customer acquisition service | 
| 40 | Vizolution | FinTech | South West and Wales | 642% | Customer engagement solutions | 
| 41 | MoveGB | Media & Entertainment | South West and Wales | 631% | Fitness network | 
| 42 | Ieso Digital Health | Health Care & Life Sciences | Cambridgeshire and East | 624% | Online clinically validated CBT for patients | 
| 43 | LoopMe | Media & Entertainment | London | 618% | Artificial intelligence driven advertising | 
| 44 | Capital on Tap | FinTech | London | 564% | Enterprise solutions | 
| 45 | MiQ | Media & Entertainment | London | 558% | Marketing intelligence platform | 
| 46 | LOVESPACE | Software | London | 554% | Online storage booking service | 
| 47 | StarLeaf | Communications | London | 552% | Video conferencing in the cloud | 
| 48 | BigChange | Software | North East | 548% | Mobile workforce management platform | 
| 49 | Poq | Software | London | 539% | Ecommerce app platform | 
| 50 | Kantox | FinTech | London | 532% | FX management solutions |