Rank Company Location Year end Annual sales rise over 3 years Latest sales £000s Staff Comment
1 The Hut GroupOnline retailer Northwich Dec 08 188.77% *24,009 110 Acquired Zavvi’s brand name and online database in March this year
2 ApaTechBone graft manufacturer Hertfordshire Mar 09 180.08% 22,770 91 Is developing a new bone graft material that stimulates rapid bone growth
3 wewillbuyyourcar.comOnline car dealer Yorkshire Mar 09 177.88% *†18,639 6 Founder Noel Parkinson used to be a professional footballer
4 MobicaSoftware engineer and tester Cheshire Dec 08 174.92% 5,648 140 Has designed applications for the Apple iPhone
5 PhyworksIntegrated circuits developer Bristol Jun 08 168.03% 5,052 41 Is opening an office in California this year
6 SkrillOnline payment provider Central London Dec 08 152.40% 27,356 47 eBay and Skype offer the company’s service as a payment option
7 Geo NetworksFibre optic network provider Central London Dec 08 146.29% *32,914 68 Owns 3,000km of fibre-optic data network across Britain
8 UbisensePrecision location technology provider Cambridge Dec 08 127.89% 9,693 83 Its technology is used in an application that tracks the movement of cattle
9 LOVEFILM.comOnline DVD rental provider West London Dec 08 127.78% 73,073 346 Its subscribers voted Donkey from Shrek as most loveable film animal of all time
10 The CloudWireless broadband service provider St Albans Dec 08 113.20% *15,871 70 Works with O2 to deliver wi-fi services for the Apple iPhone in Britain
11 Core GroupTelecoms services provider Central London Jun 08 111.35% †27,168 13 Allows customers to make cheap international calls from their mobile phones
12 Forward Internet GroupMedia developer and investor Central London Jul 09 109.40% *43,787 47 Says it delivers more than 2m clicks to its clients’ websites every day
13 Fourth HospitalityHospitality software developer Central London Aug 08 101.65% 6,733 96 Claims its software is used by restaurants in 12 countries
14 GreenlightDigital marketing agency Central London Aug 08 101.31% 11,345 63 Says it manages online marketing campaigns in 20 European countries
15 SteakDigital marketing agency Central London Feb 09 97.93% *26,901 62 Its sister company, Minute Steak, caters for firms with small advertising budgets
16 Net Media PlanetSearch marketing agency Central London Jul 08 96.63% 5,484 21 Says its online marketing generated more than £80m for clients last year
17 PireanIT consultancy Hampshire May 09 96.05% *6,806 66 Builds technology to secure and track laptops worldwide
18 murphxTelecoms services provider Southampton May 09 93.54% *11,465 49 Acquired the virtual network operator Innzone for £5m last year
19 Tomorrow CommunicationsIT network provider Central London Jul 08 91.02% *7,653 70 Opened an office in Abu Dhabi at the beginning of 2009
20 LeadbayLead generation technology provider Bristol Apr 08 86.13% 6,217 24 Company funds a nursery school for Aids orphans in Nairobi
21 Cambridge Broadband NetworksWireless technology developer Cambridge Dec 08 84.40% *14,316 100 Plans to open an office in the Middle East this year
22 JagexOnline games developer Cambridge Mar 08 83.61% 32,294 369 Claims 10m people worldwide are registered to play its flagship game, Runescape
23 TimicoConverged communications provider Nottinghamshire Dec 08 82.45% 20,425 129 Founder sold previous business to Vodafone for £162m
24 EndavaIT services provider Central London Jun 08 79.00% 15,735 417 Customers include ITV and the share-trading platform NYSE Euronext
25 Coast DigitalOnline marketer Colchester Apr 09 78.56% 8,485 30 Has recently opened an office in London
26 NeossDental implants developer Harrogate Nov 08 78.22% 11,766 108 Has launched a new dental implant that integrates quickly with bone
27 UK TelcoTelecoms services provider West Midlands Dec 08 75.53% 6,807 18 Claims it can install and maintain any make or model of phone system
28 Neverfail GroupBusiness software developer Berkshire Mar 09 74.55% *10,647 142 Its software is used in parts of America to avoid downtime in the event of a hurricane
29 Retail DecisionsPayment services provider Woking Dec 08 74.24% 289,186 302 Customers include Tesco, John Lewis, Wal-Mart and Macy’s
30 Hometrack Data SystemsHousing intelligence provider Central London Jun 08 72.49% *13,064 47 Launched its housing-market database in Australia last year
31 AdaptManaged services provider Central London Jun 08 72.21% 30,091 102 Customers include Cheapflights, Lovefilm and Aegis Group
32 GamesysOnline gaming developer Central London Mar 08 71.73% 47,881 145 Operates The Sun newspaper’s bingo website
33 AVMIAudio visual systems integrator Twickenham Jun 09 70.71% *39,078 233 Installs interactive whiteboards in schools around Britain
34 JustGivingFundraising website Central London Dec 08 67.79% *9,171 57 Says it helped raise £190,000 for the Yorkshire Air Ambulance in just seven days
35 bet365Online bookmaker Stoke-on-Trent Mar 09 67.55% *298,974 900 Recently launched fixed-odds betting on the financial markets
36 ControlCircleIT services provider Central London Sep 08 67.52% 6,072 51 Claims its clients’ web pages receive a combined 125 billion hits a year
37 AmsphereSoftware testing consultancy Central London Mar 08 67.38% 10,904 98 Has offices in Britain, India and Singapore
38 UKFastInternet hosting provider Manchester Dec 08 66.75% 6,425 57 Sponsors Premiership rugby club the Sale Sharks
39 IntelliFloFinancial software developer Kingston upon Thames Dec 08 66.48% 5,187 50 Claims that its user base has increased from 26 to 6,000 in five years
40 Retroscreen VirologyBiomedical research organisation Central London Jul 08 66.14% 5,255 42 Is investigating the genetic nature of the virus that caused the 1918 flu pandemic
41 MasternautVehicle tracking software developer Buckinghamshire Aug 08 66.06% 22,300 150 Runs a competition every quarter to find Britain’s safest driver
42 Cello ElectronicsLCD TV manufacturer North Yorkshire Mar 09 64.80% 33,812 2 Designs and manufactures own-brand LCD television sets for Next and M&S
43 ESP GroupMass transit smartcards Hull Jul 08 64.78% 8,084 85 Says its high-tech printers have produced 7m smart cards for cashless travel
44 Smiths ConsultingIT consultancy Newcastle Mar 09 60.19% *7,546 40 Has assisted staff at Marston’s breweries with logistics
45 becryptEncryption software developer Central London Feb 09 60.14% 10,108 81 Its encryption technology is used by the Foreign Office
46 Distribution TechnologySoftware developer Reading Jun 09 59.88% *6,483 71 Says that 25,000 financial advisers use its software
47 King.comGaming website operator Central London Dec 08 59.38% 29,949 68 Claims that 70% of its customers are female and aged between 25 and 34
48 ExcelianIT consultancy Central London Dec 08 57.27% *13,079 60 Has offices in London, New York, Sydney and Johannesburg
49 Thunderhead.comCommunications software developer Northeast London Dec 08 56.63% 15,859 94 Claims that its software pays for itself within a year
50 O-Bit TelecomTelecoms services provider Buckinghamshire Feb 09 56.30% 14,893 32 Partnering with Spandau Ballet to provide fans with news by text
51 Intrinsic TechnologyIT consultancy Merseyside Nov 08 55.62% 17,647 81 Customers include Barclays, Honda and Lloyds Banking Group
52 Stage TechnologiesStage equipment designer Central London Mar 08 54.92% 15,515 104 Has provided equipment for venues and shows in more than 30 countries
53 eCourierCourier services provider Central London Mar 09 54.66% *5,417 58 A failed delivery of tennis tickets inspired the founders to set up the business
54 ROCSAP-based software developer Weybridge Sep 08 54.58% *10,238 100 Acquired an American SAP consultancy earlier this year
55 NEG TelecomTelecoms services provider Essex Dec 08 54.22% 8,165 10 Works with doctors’ surgeries to prioritise calls based on patients’ level of risk
56 Bluefin SolutionsIT consultancy West London Mar 09 53.73% *13,558 117 Customers include Bosch, Brother and United Utilities
57 Retail EyesCustomer service research agency Milton Keynes Mar 09 53.04% *6,104 88 In the next year its mystery shoppers will make 3,000 visits to Pets at Home stores
58 Exponential-eNetwork services provider Central London Jan 09 52.90% 14,973 88 Provides Ethernet services for the All England Tennis Club
59 Focus GroupTelecoms services provider East Sussex May 09 52.87% *5,851 21 Supplies telecoms services for Britain’s largest general union, the TGWU
60 toptable.comRestaurant reservation website Central London Jun 08 52.59% 5,508 59 Shareholders include Sir Alex Ferguson and Gary Rhodes
61 Entanet InternationalCommunications provider Telford Nov 08 52.37% *24,409 81 Claims to provide broadband to 100,000 users throughout Britain
62 ProbrandIT reseller Birmingham Dec 08 52.35% 52,674 59 Customers include Cheltenham Borough Council and Coffee Republic
63 LatitudeDigital marketing agency Central London Dec 08 51.22% *58,669 89 Claims its campaign for Tesco Personal Finance resulted in an 87% increase in sales
64 Momondo GroupTravel search Central London Dec 08 50.20% *26,283 102 Says it had 78m visits to its websites last year
65 Worldwide GroupTelecoms services provider Peterborough Dec 08 49.55% *23,898 52 Claims to route more than 100m minutes of calls every month
66 Summit MediaDigital media agency York Jan 09 49.11% *20,858 100 Has recently won a contract to handle all of Comet’s online marketing
67 bluesourceIT consultancy Central London Sep 08 48.98% *6,188 65 Manages e-mails for Conservative party headquarters and Spurs Football Club
68 B2netIT consultancy Chesterfield Apr 09 48.92% *38,000 103 Designed a degree module on data storage for Sheffield Hallam University
69 AscribeHealthcare IT provider Bolton Jun 08 48.16% 17,389 227 Claims its systems are installed in more than 50% of British hospitals
70 Griffin InternetInternet service provider Derby Dec 08 47.86% *14,643 66 Says it was the first European company to broadcast live music on the internet
71 NixxieOnline advertising agency Central London May 09 47.66% *10,964 10 Claims its global advertising network delivers 7m leads a month
72 Thomsons Online BenefitsEmployee benefits software developer Central London Dec 08 47.63% *12,205 98 Recently won a contract with Cisco
73 Origin StorageIT storage developer Basingstoke Mar 08 47.23% 5,544 23 Opened an office in Holland this year
74 BrightTALKWebcasting service provider Central London Apr 09 46.88% *5,262 49 More than 1,000 presentations are stored on its webcasting site
75 ActurisSoftware services provider Central London Sep 08 46.62% 10,617 92 Co-founded by the former chairman of Lloyds TSB, Sir Brian Pitman
76 XbridgeOnline insurance broker Central London Dec 08 46.59% *8,979 117 Claims to provide more than 1m insurance quotes a year to small businesses
77 StonewoodHardware encryption services provider Dorset Dec 08 46.46% 8,898 105 Its encrypted hard drives are used by Nato and the MoD to protect information
78 Zeus TechnologySoftware developer Cambridge Sep 08 45.27% 6,356 55 Powers Comic Relief’s website, enabling it to process 116 donations a second
79 Southern CommunicationsTelecoms services provider Hampshire Mar 09 44.79% *9,027 65 Recently launched a business-to-business mobile-phone sales division
80 CP ElectronicsElectrical equipment designer Wembley Aug 08 44.47% 7,752 63 Is modifying its energy-saving light controls for European homes
81 Onyx GroupIT services provider Stockton-on-Tees Dec 08 44.40% 9,795 83 Its data network would reach from London to Vienna
82 MeetingZoneConference call provider Oxfordshire Mar 09 43.94% *8,195 45 Opened offices in Germany, Toronto and Philadelphia last year
83 VitafloClinical nutrition products developer Liverpool Mar 08 43.43% 11,388 58 Produces food for patients with metabolic disorders and disease-related malnutrition
84 Listening CompanyCall-centre software provider West London Oct 08 43.37% 51,352 1,750 Says its headset cables laid end to end, would wrap around the O2 Arena ten times
85 SwitchfireMobile technology developer Central London Mar 08 43.33% *7,513 31 Has turned art by Damien Hirst and Tracey Emin into wallpapers for mobile phones
86 Orange Information SystemsIT consultancy Central London Mar 09 43.03% 9,211 30 Planning to expand to New York and Hong Kong within the next year
87 OB10E-invoicing system provider Central London Apr 09 42.92% *10,004 145 Currently looking to expand into Mexico and Brazil
88 Rule FinancialBusiness and IT consultancy Central London Dec 08 42.28% 23,428 144 Acquired a Polish software consultancy at the end of last year
89 Vtesse NetworksNetwork services provider Hertford Dec 08 41.98% 19,600 44 Customers include Lloyds Banking Group, IBM and Hewlett Packard
90 Javelin GroupE-commerce consultancy Central London Feb 08 41.56% 11,466 60 Claims that Britain’s ten biggest retailers are its customers
91 Twofour GroupDigital media producer Plymouth Dec 08 41.46% *28,626 317 Produces the TV programme Are you Smarter than a Ten Year Old? for Sky 1
92 Caplin GroupFinancial software developer Central London Mar 09 41.40% *5,176 50 Founder used to be in 1980s pop group Haysi Fantayzee
93 Bluefish CommunicationsIT consultancy Reading Jun 09 41.21% *8,242 27 Founded in a two-bed flat in Windsor — now has offices in Britain and Australia
94 EpsilonTelecoms services provider Central London Feb 09 41.16% 7,645 28 More than 24 languages are spoken by its employees
95 iokoDigital media systems integrator York Sep 08 41.03% 38,087 256 Claims that 90% of Brits watching television online do so using its technology
96 AdeptraManaged services provider Reading Dec 08 39.80% 12,264 81 Claims its software handles more than 20m queries a year on credit-card fraud
97 Magrathea TelecommunicationsWholesale telecoms services provider Wokingham Jun 08 38.85% 6,896 10 Says it hosts more than 25m British phone numbers
98 ITRS GroupFinancial software developer Central London Mar 08 38.74% 8,085 39 Claims that many of the world’s big financial institutions use its software
99 Wavex TechnologyIT managed services provider Central London Sep 08 38.56% 6,779 80 Has clients in Singapore and the Middle East
100 Northgate Information SolutionsSoftware and services provider Hertfordshire Apr 08 38.19% 542,782 6,968 Provides IT services to the human resources, local government and education sectors

* supplied by company  † annualised figure