Rank Company Location Year end Annual sales rise over 3 years Latest sales £000s Staff Comment
1 Holiday Rooms DirectOnline hotel agency Doncaster 2006 513.98% *6,924 9 Claims to save customers up to 70% on standard hotel rates
2 CodianVideo conferencing Slough 2006 489.49% 7,176 50 Says its video-conferencing products are used by Whitehall departments
3 The Best OfCommunity website franchisor Solihull 2006 486.31% 4,004 21 Founding couple remortgaged their house to provide £200,000 seed funding
4 AMV HoldingMobile content provider Buckinghamshire 2006 467.00% *†4,022 22 Operates mobile dating brands Freedate and Speeddate
5 LOVEFILM.comOnline DVD rental provider West London 2006 367.92% †27,612 165 Says it handles more than 2.5m DVD rentals each month
6 Pitch EntertainmentMobile services provider Central London 2006 326.42% 7,887 24 Founder of ringtone company previously studied at Royal College of Music
7 Stirk Lamont & AssociatesICT consultancy Belfast 2006 317.64% 4,039 57 Delivers IT and communications projects across five continents
8 NEG TelecomTelecoms services provider Essex 2006 265.73% 4,738 8 Claims it processed more than 35m calls last year
9 buy.atOnline marketer Newcastle 2006 254.10% 12,984 34 Operates 6,000 online shops for schools and charities
10 TimicoConverged communications provider Nottinghamshire 2006 253.99% 6,621 49 Provides internet-telephony services to the diocese of Westminster
11 Tideway SystemsSoftware developer Central London 2006 250.36% *†4,923 88 Only two years after launching there, America accounts for 50% of sales
12 RocelaOracle consultancy Edinburgh 2006 240.52% 20,638 15 Claims its client list represents many of the largest Oracle users in Britain
13 ApaTechBone graft manufacturer Hertfordshire 2007 237.52% *3,081 31 Recently raised £2m for a new, state-of-the-art factory opened by Lord Sainsbury
14 AdventiIT services provider Glasgow 2006 216.10% 14,662 72 Unique status as both a Microsoft Gold Partner and Apple Premium Reseller
15 Coast DigitalOnline marketer Colchester 2007 199.46% 4,216 18 Created system so WeightWatchers.co.uk users can calculate body mass index
16 Forward Internet GroupMedia developer and investor Central London 2007 197.01% *10,104 35 Says it routed over 78m users to its clients’ websites last year
17 Tomorrow CommunicationsIT network provider Central London 2006 190.24% 3,117 50 Set up with £100k from the sale of founders’ previous firm
18 The Hut GroupOnline retailer Northwich 2007 187.47% *5,721 31 Built and runs Asda-entertainment.co.uk for the retail giant
19 ArrkSoftware developer Manchester 2006 184.94% 6,181 180 Its software will help emergency services respond more quickly
20 King.comGaming website operator Central London 2006 184.18% 13,002 37 Says it hosts over 40m online games a month
21 PowerlaseLaser designer and manufacturer Crawley 2006 182.71% *9,216 59 Founded by three academics as a spin-out from London’s Imperial College
22 Vtesse NetworksNetwork services provider Hertford 2006 170.62% 17,315 32 Claims its optical networks guarantee 99.99% availability and are hacker-proof
23 RedtrayE-learning software developer Surrey 2006 164.42% *5,309 47 Jon Moulton of Alchemy Partners was an early stage investor with £600,000
24 InforSenseData analysis software developer West London 2006 147.32% 3,406 49 Spun out from Imperial College's computing department in 1999
25 AdaptManaged services provider Central London 2006 140.10% 7,929 31 Acquired Centric Telecom from Alchemy Partners for £6.3m in July
26 O-Bit TelecomTelecoms services provider Buckinghamshire 2007 133.96% 7,719 25 Claims its phone cards are used by 2,000 corporate clients, including HSBC
27 ChessTelecoms services provider Cheshire 2006 128.64% 17,682 95 Refocused from selling gas and electricity to offering telecoms services
28 GamesysOnline gaming developer Central London 2006 128.19% 17,294 69 Launched online games based on Deal or No Deal and Price is Right
29 XLN Business ServicesBusiness services provider Central London 2006 124.19% 20,215 37 Specialises in providing telecoms services to businesses with fewer than five staff
30 Bluefish CommunicationsIT consultancy Reading 2007 115.34% *4,074 21 Provides IT consultancy services to FTSE 100 companies and the government
31 ExasoftFinancial software developer Coventry 2006 107.11% 7,086 7 Plans to launch its mortgage software in mainland Europe and America next year
32 NeossDental implants developer Harrogate 2006 106.25% 4,199 70 Has received more than £15m in investment since product launch four years ago
33 OB10E-invoicing system provider Central London 2006 106.04% 3,427 64 Says it saved 900 trees last year with its paper-free invoicing system
34 BetgeniusBetting data services provider Central London 2006 105.85% 3,553 23 Says its database contains more than 500,000 live betting odds at any time
35 Digital WindowOnline marketer East London 2006 102.23% 9,785 38 Founder was inspired to set up the company with software bought for £200
36 Picsel TechnologiesMobile software developer Glasgow 2006 101.73% 24,791 189 Says the 125 millionth handset using its software was shipped this year
37 Retail EyesCustomer service research agency Milton Keynes 2007 101.23% *3,084 79 Its mystery shoppers visit 10,000 pubs, hotels and leisure sites monthly
38 IPINetwork services provider Wakefield 2006 100.17% 4,003 26 Has installed IT networks for more than 100 customers, including BMW
39 ApertioMobile telecoms software developer Bristol 2006 99.86% 13,709 174 Supplies the mobile industry in Pakistan, which gains 1m users a month
40 Distribution TechnologySoftware developer Reading 2007 99.35% *3,459 53 Claims 14,000 financial advisors in Britain use its software
41 UK Digital CamerasOnline retailer Northwest London 2006 99.31% 4,659 8 Set up by a father and son with a shared love of photography
42 Thunderhead.comCommunications software developer Northeast London 2006 98.45% 7,422 65 Founded by a former gamekeeper with the proceeds of a previous start-up
43 GhekkoTelecoms reseller Macclesfield 2006 93.61% *10,874 15 Founder set up the company with a £1,500 loan from the Prince’s Trust
44 WorldStoresOnline retailer West London 2007 92.59% *6,015 18 Claims to attract 5m visitors to its 10 websites each year
45 Bluefin SolutionsIT consultancy West London 2007 88.13% *7,410 70 Says it supplies SAP consultancy services to over 25% of the FTSE 100
46 XantusIT consultancy Manchester 2007 86.00% *7,867 40 Helped the Department for Work and Pensions negotiate an £870m contract
47 Transition ConsultingSoftware testing consultancy Reading 2006 85.33% 3,215 52 Sponsors computer science scholars at Bristol and Exeter universities
48 Equi MediaMedia agency Swindon 2006 84.82% 14,358 24 Says it delivers three billion visitor clicks to its clients' websites each year
49 CashcadeOnline gaming marketer South London 2006 84.49% 7,569 21 Glamour girl Jordan is the celebrity face of its website, FoxyBingo.com
50 MINXCisco products integrator Elstree 2006 84.17% 11,112 39 Husband and wife founded firm five years ago with only £100
51 PasporteICT services provider Surrey 2006 83.86% 9,688 21 Says it helped Orient Express Hotels cut IT and communications costs by 20%
52 Ip.AccessMobile technology provider Cambridgeshire 2007 82.22% 12,866 115 Has raised more than £13m from investors including Scottish Equity Partners
53 SwitchfireMobile technology developer Central London 2006 80.09% 3,829 23 Developed mobile-phone dating services for newspaper group Trinity Mirror
54 Thomsons Online BenefitsEmployee benefits software developer Central London 2006 79.40% *5,852 46 Its online employee benefits system is available in eight languages
55 CityspaceUrban digital networks provider Central London 2006 79.11% 4,021 48 Is building the wi-fi network at St Pancras International train station
56 TSGIT services provider Newcastle upon Tyne 2006 76.66% *33,883 461 Co-founder set up the company with £25m of his own funds
57 Reading RoomDigital communications agency Central London 2007 76.44% 7,208 101 Designed the Prince of Wales’s official website last year
58 You at WorkEmployee benefits agency East London 2006 76.11% *3,211 46 Its software allows employees to trade days of holiday for cash
59 NET-A-PORTER.comOnline fashion retailer Central London 2007 76.05% †36,494 238 Designer Roland Mouret launched his new collection on its website
60 PsytechnicsCommunications software developer Ipswich 2007 75.14% 4,582 35 Spun out from a BT research facility in 2000
61 G3Telecoms services provider Central London 2006 73.05% 3,524 11 Designed the call reservation system for holiday firm Center Parcs
62 NGSSoftwareSecurity software & consultancy South London 2006 72.03% 4,530 50 Helped protect Red Nose Day donations from internet hackers
63 MasternautVehicle tracking software developer Buckinghamshire 2006 71.61% 8,571 105 Its fleet management software helps keep track of British Airways cargo
64 Momondo GroupTravel search Central London 2006 70.52% 12,332 75 Claims to generate £1 billion in sales for its flight advertisers
65 Euro Communications DistributionTelecoms reseller Wolverhampton 2006 69.44% 3,015 14 Helps mobile-phone operators dispose of obsolete handsets
66 VendaE-commerce software developer Central London 2006 69.08% *5,789 212 Its technology powers online shops for De Beers, Superdrug and Arsenal
67 MeetingZoneConference call provider Oxfordshire 2007 67.00% 4,032 22 Hosts conference calls for an average of five people
68 SSLElectronics and software developer Bristol 2006 65.67% 4,669 87 Has a four-year contract to supply CCTV systems to the Highways Agency
69 Espresso EducationEducational content provider West London 2006 65.12% 7,504 91 Recently acquired the education website Channel 4 Learning
70 1EEnterprise software developer West London 2006 65.10% 9,498 49 Named after a Microsoft systems error
71 SatamaticsSatellite services provider Tewkesbury 2006 64.83% 8,235 48 Provided tracking technology for competitors in Running the Sahara 2007
72 JobpartnersHR software developer West London 2006 64.36% 6,965 60 Claims Superdrug has cut recruitment costs by almost 85% using its software
73 i-levelDigital communications agency Central London 2006 64.27% 54,104 63 Helps the likes of Orange and William Hill promote their brands online
74 AdeptraManaged services provider Reading 2006 64.21% *7,040 53 Claims to make more than 15m automated calls per month on behalf of clients
75 Alpha Data Parallel SystemsElectronic systems designer Edinburgh 2006 63.66% *7,382 16 Provided the technology to scan the wreck of the warship HMS Royal Oak
76 NucleusWeb designer Surrey 2006 63.40% *6,291 45 Company will launch its sQuid e-money card in Bolton this year
77 TMTITechnical support provider Somerset 2007 63.16% 5,060 89 Launched a helpline for consumers who can't work electronic gadgets
78 Exponential-eNetwork services provider Central London 2007 63.14% 6,828 70 Installed a transatlantic ethernet link for investment group Investcorp
79 Bell MicrosystemsIT services provider Portsmouth 2006 62.78% 17,609 42 Designed an IT system for Transport for London and the Olympic bid
80 TechnetixTelecoms equipment maker West Sussex 2006 62.37% 38,137 132 Provides broadband network solutions
81 Wavex TechnologyIT managed services provider Central London 2006 61.56% 3,898 43 Says it was the first company to write the fix for the 'I Love You' virus
82 RedEyeE-marketing services provider Crewe 2007 61.08% *4,394 51 Claims to send 50m targeted e-mails per month on behalf of clients
83 WDSGlobalWireless services support provider Poole 2006 60.02% 35,067 703 Says it configured nearly 90m mobile phones last year
84 OcadoOnline grocery retailer Hatfield 2006 58.80% †213,623 1248 Says it has raised £300m, more funds than any European internet start-up
85 Z-TechControl systems developer Cambridgeshire 2006 58.58% 3,279 60 Founder raised start-up capital by selling his motorbike
86 Box TelematicsWireless technology developer West Midlands 2006 58.13% 6,399 49 Owner founded her first company with a £60,000 loan and her car as collateral
87 Office Canopy GroupProcurement software developer Surrey 2006 57.73% 10,292 50 Claims to reduce spend on commodity supplies by more than 50%
88 CentiqIT services provider Nottingham 2006 56.57% 18,148 37 Provides the IT system that powers one of Europe's largest payrolls
89 s2sIT services provider West Sussex 2006 56.00% 5,341 22 Has just signed a £300,000 managed services deal with retailer Julian Graves
90 GigaSatSatellite systems manufacturer Hertfordshire 2006 55.93% 10,787 48 Its mobile satellite systems brought news from New Orleans after the hurricane
91 iMetaBusiness software developer Southampton 2006 55.69% 3,523 43 Designed a secure online banking system for Clydesdale Bank
92 London Theatre DirectOnline ticket retailer Central London 2006 54.89% 4,555 2 Sells West End theatre tickets to customers in Britain and mainland Europe
93 EqosRetail software developer Surrey 2006 54.63% 6,013 48 Claims more than £19 billion of retail stock is sourced through its software
94 ICS SolutionsMicrosoft technology consultancy Basingstoke 2006 53.75% 6,676 30 Developed a web portal for Zurich Insurance to manage its 2,500 IFAs
95 UnicomTelecoms services provider Manchester 2006 53.27% 30,976 466 Claims it is acquiring up to 600 new business customers every week
96 Open LogicPortal software developer Worcester 2006 53.11% *6,788 38 Only British finalist for this year's IBM Beacon Award for Technical Excellence
97 LaganGovernment software developer Belfast 2006 52.68% 9,950 111 Claims Transport for London saved £8m by implementing its software
98 Nexus OncologyClinical researcher Edinburgh 2007 51.82% *3,605 58 Set up with a £10,000 redundancy payout
99 EdenbrookSystems integrator Central London 2006 51.64% 22,682 138 Founders met while working at Oracle in the 1990s
100 EurofficeOffice products retailer Central London 2007 51.57% *18,040 33 Says it plans to increase its range from 25,000 to 250,000 office products

* supplied by company   annualised figure