| | Broadcast Media | London | England | > $1B |
| | Gambling & Casinos | Stoke-on-Trent | England | $250 - 500M |
| | Music | London | England | $500M - 1B |
| | Publishing | Manchester | England | |
| | Newspapers | London | England | $500M - 1B |
| ASOS.comASOS | Shop the Latest Clothes and Fashion Online | Internet | London | England | > $1B |
| | Sports | London | England | $500M - 1B |
| | Publishing | Cambridge | England | $250 - 500M |
| | Sports | London | England | $10 - 50M |
| Rightmove PLCUK's number one property website for properties for sale and to rent | Real Estate | London | England | $500M - 1B |
| Match.com, L.L.C.
Match.com® | The Leading Online Dating Site for Singles & Personals : Match.com
| Internet | London | England | $500M - 1B |
| Sky Plc.Sky TV & Broadband | News, Sports, Movies & Entertainment | Broadcast Media | Isleworth | England | > $1B |
| TeamViewer>TeamViewer – Remote Support, Remote Access, Service Desk, Online Collaboration and Meetings | Computer Software | London | England | $50 - 100M |
| BT Group plcBT | Using the power of communication to make a better world | Information Technology and Services | London | England | > $1B |
| HSBCHSBC Personal Banking and Online Banking | HSBC UK | Insurance | London | England | > $1B |
| | Internet | London | England | $100 - 250M |
| | Computer Software | London | England | $100 - 250M |
| | Newspapers | London | England | $500M - 1B |
| | Information Technology and Services | London | England | $1 - 10M |
| XeroAccounting Software & Online Bookkeeping | Xero | Computer Software | London | England | > $1B |
| easyJetBook direct for our guaranteed cheapest prices | easyJet.com | Airlines/Aviation | Luton | England | > $1B |
| Virgin MediaVirgin Media – Cable Broadband, Digital TV, Mobile & More | Virgin Media | Telecommunications | Hook | England | > $1B |
| Rentalcars.comCheap Car Rentals, Best Prices Guaranteed! - Rentalcars.com | Leisure, Travel & Tourism | Manchester | England | > $1B |
| | Retail | Shirebrook | England | > $1B |
| FarfetchFarfetch - Designer Luxury Fashion for Men & Women | Internet | London | England | $100 - 250M |
| SkrillOnline payments & Money transfers | Skrill | Financial Services | London | England | $250 - 500M |
| | Health, Wellness and Fitness | Chadderton | England | > $1B |
| | Online Media | London | England | $0 - 1M |
| | Transportation/Trucking/Railroad | London | England | $500M - 1B |
| | Financial Services | Swindon | England | > $1B |
| | Retail | London | England | > $1B |
| | Research | Cambridge | England | $500M - 1B |
| | Banking | London | England | $1 - 10M |
| | Computer Games | Surrey | England | |
| ZamzarZamzar - video converter, audio converter, image converter, eBook converter | Computer Software | Southampton | England | $1 - 10M |
| | Education Management | London | England | |
| | Education Management | London | England | > $1B |
| | Entertainment | London | England | > $1B |
| MemriseLearning, made joyful - Memrise | E-Learning | London | England | $1 - 10M |
| boohoo.comClothes | Women?s & Men?s Clothing & Fashion | Online Shopping ? boohoo | Apparel & Fashion | Manchester | England | $0 - 1M |
| | Sports | Stretford | England | $500M - 1B |
| | Publishing | London | England | $250 - 500M |
| | Internet | London | England | $1 - 10M |
| B&QDIY Supplies & Accessories | DIY at B&Q | Retail | Chandler's Ford | England | > $1B |
| VivastreetPetites Annonces Gratuites . Annonce : Emploi , Rencontre, Immobilier Vivastreet | Retail | London | England | $1 - 10M |
| | Publishing | | | $250 - 500M |
| | Retail | London | England | > $1B |
| | Publishing | London | England | $250 - 500M |
| | Education Management | London | England | $1 - 10M |
| | Environmental Services | Exeter | England | > $1B |
| Alamy
Alamy – Stock Photos, Stock Images & Vectors
| Photography | Milton | England | $10 - 50M |
| TOPSHOP TOPMANTopshop USA - Women's Clothing | Women's Fashion & Trends | Apparel & Fashion | London | England | > $1B |
| IGIG – world leader in Online Trading. Access 10,000+ markets including Shares, Indices and FX. | Financial Services | London | England | > $1B |
| Three.Savings on SIM, Smartphones and Mobile Broadband | Three | Telecommunications | Maidenhead | England | $250 - 500M |
| | Retail | London | England | > $1B |
| HSBCHSBC Group corporate website | HSBC Holdings plc | Investment Management | London | England | > $1B |
| ADVFN Com PLCFree stock prices, quotes, stock charts, market news and streaming real-time stock quotes. | Investment Management | London | England | $10 - 50M |
| | Entertainment | London | England | $100 - 250M |
| | Online Media | London | England | $1 - 10M |
| TransferWise
Transfer Money Online | Send Money Abroad with TransferWise
| Financial Services | London | England | $250 - 500M |
| LystLyst - Your World of Fashion | Apparel & Fashion | London | England | $10 - 50M |
| HalifaxHalifax UK | Bank Accounts, Savings, Loans & Mortgages | Banking | Halifax | England | $250 - 500M |
| | Marketing and Advertising | Reading | England | $250 - 500M |
| O2O2 | Mobile Phones, Mobile Broadband and Sim Only Deals on O2 | Telecommunications | Slough | England | $250 - 500M |
| Debenhams
Debenhams UK - Fashion, Beauty, Gifts, Furniture & Electricals
| Retail | London | England | > $1B |
| | Machinery | Lubenham | England | $100 - 250M |
| Which?Reviews and expert advice from Which? | Publishing | London | England | $250 - 500M |
| | Hospitality | Bicester | England | $100 - 250M |
| | Computer Software | | | > $1B |
| | Sports | Liverpool | England | $50 - 100M |
| MimecastEmail Cloud Services in Security & Archiving | Mimecast | Information Technology and Services | London | England | $250 - 500M |
| giffgaffMobile Phone and SIM Card Deals | giffgaff | Telecommunications | Uxbridge | England | $10 - 50M |
| MR PORTERMR PORTER - The online retail destination for men's style | Retail | London | England | > $1B |
| QuidcoQuidco - The UK's #1 Cashback & Voucher Codes Site | Consumer Services | London | England | $1 - 10M |
| MOOMOO | Custom Online Business Printing & Design | MOO (United States) | Printing | London | England | $100 - 250M |
| CV-Library LtdJob Search - Find UK vacancies and jobs near you on CV-Library - CV-Library | Staffing and Recruiting | Fleet | England | $10 - 50M |
| Ernst & YoungBuilding a better working world - EY - United States | Accounting | London | England | > $1B |
| CoinDeskBitcoin News, Blockchain News, Prices, Charts & Analysis - CoinDesk | Publishing | London | England | $0 - 1M |
| KayakoHelp Desk Software | Kayako Unified Customer Service Software | Computer Software | London | England | $10 - 50M |
| | Research | Manchester | England | > $1B |
| | Retail | London | England | $100 - 250M |
| fling.comFling - Free Adult Dating. Sexy Online Personals! | Computer Software | Richmond | England | $1 - 10M |
| Wickes
Wickes DIY - Home Improvement Products for Trade and DIY | Retail | Watford | England | > $1B |
| WiggleWiggle | Cycle | Run | Swim | Tri-Sports & Bike Shop | Sporting Goods | Portsmouth | England | $100 - 250M |
| uSwitch Ltd
Energy Comparison of Gas & Electricity | Broadband Deals & Mobile Phones | uSwitch.com
| Internet | London | England | $10 - 50M |
| | Sports | London | England | $50 - 100M |
| | Retail | Richmond | England | $10 - 50M |
| | Retail | Basingstoke | England | > $1B |
| | Retail | Redditch | England | > $1B |
| EbuyerCheap Laptops, Tablet PC, and Cheap LED TVs | Ebuyer.com | Retail | Howden | England | $100 - 250M |
| | Publishing | New Boston | TX | $10 - 50M |
| | Computer Games | London | England | $10 - 50M |
| | Internet | Peterborough | England | $1 - 10M |
| | Retail | Reading | England | > $1B |
| | Higher Education | Coventry | England | > $1B |
| | Electrical/Electronic Manufacturing | Hayes | England | $500M - 1B |
| MissguidedWomen's Clothing - Shop Ladies Fashion Online | Missguided | Retail | Manchester | England | $100 - 250M |
| Maplin Electronics
Maplin | Maplin - The Electronics Specialist | Order Online for Fast Delivery | Retail | Hemel Hempstead | England | $100 - 250M |
| The AABreakdown cover, Insurance, Route Planner | AA | Automotive | Basingstoke | England | > $1B |
| | Financial Services | London | England | $50 - 100M |