Rank Company Location Year end Annual sales rise over 3 years Latest sales £000s Staff Comment
1 Mobile Interactive GroupMobile and digital technology provider Central London 2008 422.30% *35,880 82 Its technology allows O2 arena visitors to get tickets through their mobile phones
2 LOVEFILM.comOnline DVD rental provider West London 2007 239.28% *49,252 247 Has started work with schools to encourage teaching and communication through film
3 NetbasicWebsite developer Fareham 2007 235.30% 9,606 7 Posted sales of £9.6m last year with only seven staff
4 TimicoConverged communications provider Nottinghamshire 2007 205.27% 15,030 91 Provides internet-telephony services to the diocese of Westminster
5 ApaTechBone graft manufacturer Hertfordshire 2008 204.57% 7,641 45 Customers include the Royal National Orthopaedic Hospital
6 Tideway SystemsSoftware developer Central London 2007 184.01% *9,188 110 Won the British Computing Society ‘Technology Supplier of the Year’ award in 2007
7 NEG TelecomTelecoms services provider Essex 2007 175.40% 7,399 8 Claims to transfer 250m call minutes each year
8 The Hut GroupOnline retailer Northwich 2008 173.07% *14,097 42 Claims to sell a product through its own or one of its clients’ websites every 10 seconds
9 Tomorrow CommunicationsIT network provider Central London 2007 153.11% 6,000 60 Clients include Barclays Wealth and BSkyB
10 Forward Internet GroupMedia developer and investor Central London 2008 151.91% *18,309 45 Says its online marketing generated more than £100m in sales for clients last year
11 Coast DigitalOnline marketer Colchester 2008 150.05% 7,350 23 Claims its services can generate up to 19 times return on investment for its clients
12 BlueSky Travel SystemsSoftware developer Manchester 2007 142.83% 8,276 120 Its ¤100m project with Thomas Cook has seen staff increase four-fold
13 King.comGaming website operator Central London 2007 132.93% *20,347 63 Its games are hosted by web giants MSN, Yahoo and AOL
14 AdventiIT services provider Glasgow 2007 125.08% 16,732 87 Says it provides IT services for 19 of Scotland’s 32 local authorities
15 AdaptManaged services provider Central London 2007 121.44% †14,936 75 Customers include fast-growing companies Lovefilm and Play.com
16 RedtrayE-learning software developer Surrey 2007 116.81% *7,739 61 Jon Moulton of Alchemy Partners was an early-stage investor with £600,000
17 GamesysOnline gaming developer Central London 2007 107.86% 29,829 101 Recently won the contract to operate Sunbingo.com
18 Digital WindowOnline marketer East London 2007 101.45% 19,560 63 Its technology powers The Sun’s online shop
19 CashcadeOnline gaming marketer South London 2007 100.78% 18,001 68 Runs the website Foxy Bingo, which sponsors the Jeremy Kyle show
20 NeossDental implants developer Harrogate 2007 99.16% *7,797 90 Its dental implant system uses state-of-the-art titanium roots
21 GreenlightDigital marketing agency Central London 2007 97.47% 7,469 30 Claims its marketing campaign for Monarch Airlines earned £364 for every £1 invested
22 Bluefish CommunicationsIT consultancy Reading 2008 96.75% *6,691 35 Employs 35 and has a bank of more than 120 technical consultants to draw on
23 The CloudWireless broadband service provider St Albans 2007 96.42% 8,160 62 Claims its wireless infrastructure supports a million internet connections a month
24 Distribution TechnologySoftware developer Reading 2008 95.11% *6,465 78 Says that more than 20,000 financial advisers use its software
25 Vtesse NetworksNetwork services provider Hertford 2007 94.25% 17,329 37 Has won a contract with Lloyds TSB worth up to £70m
26 MiniclipOnline games developer Central London 2007 91.92% 19,161 14 Its games are produced by an international network of 300 developers
27 Patersons HR & Payroll SolutionsPayroll software developer Salisbury 2008 90.78% *6,035 156 Its software can function in 30 different languages
28 O-Bit TelecomTelecoms services provider Buckinghamshire 2008 87.34% 9,272 30 Co-founder installed a 20-foot model giraffe in the company’s reception area
29 Thunderhead.comCommunications software developer Northeast London 2007 87.14% 12,351 72 Claims nine of the top ten global investment banks use its software
30 ExcelianIT consultancy Central London 2007 86.71% *10,651 43 Experienced growth due to greater demand for risk-management and trading technology
31 Neverfail GroupBusiness software developer Berkshire 2008 83.70% 7,154 150 Its disaster recovery software protects staff at Vodafone
32 ChessTelecoms services provider Cheshire 2007 82.79% 20,657 73 Company named after founder’s children Charlie and Jessie
33 Smiths ConsultingIT consultancy Newcastle 2008 81.67% 5,186 27 Helped T-Mobile roll out supply-chain management software in five countries
34 Retail DecisionsPayment services provider Woking 2007 81.56% †189,958 257 Helps leading international retailers to combat online fraud
35 IPINetwork services provider Wakefield 2007 77.22% 5,561 33 Installs IT networks for the likes of BMW and Spar
36 Bluefin SolutionsIT consultancy West London 2008 75.32% 11,283 106 Opened offices in Chicago and Kuala Lumpur this year
37 AVMAudio visual systems integrator Twickenham 2008 74.77% *17,211 250 Maintains a cinema at Heathrow for Virgin Atlantic’s first-class passengers
38 Momondo GroupTravel search Central London 2007 73.07% †21,059 91 Claims to advertise up to 1.5m flight deals a day
39 Capital SupportIT consultancy Central London 2008 69.45% 7,110 58 Claims that business growth has come solely through word-of-mouth recommendations
40 Comms-careIT services provider Crewe 2008 69.43% *6,192 102 Says it advanced from Cisco silver partner to gold within a month
41 SwitchfireMobile technology developer Central London 2007 69.20% *5,719 26 Claims to process 5m premium-rate SMS messages every month
42 DreamticketOnline travel operator Croydon 2007 68.84% 15,142 70 Soon to launch a super luxury tailor-made holiday site
43 MasternautVehicle tracking software developer Buckinghamshire 2007 68.01% 13,803 86 Says it helps Ann Summers deliver products to customers quickly and efficiently
44 Thomsons Online BenefitsEmployee benefits software developer Central London 2007 67.89% *8,605 66 Helped the MoD launch an online benefits calculator for its 215,000 personnel
45 murphxTelecoms services provider Southampton 2008 67.23% 6,104 42 Provided internet connectivity for the live webcams used by BBC2’s Springwatch
46 IRIS SoftwareBusiness software developer Berkshire 2008 64.87% *94,944 1127 Claims its software produces the payslips for 10% of the British workforce
47 Espresso EducationEducational content provider West London 2007 63.07% 11,934 108 Provides a digital library of video clips, news items and websites to schools
48 SpongeMobile applications designer Central London 2007 60.90% *5,229 21 Helped the Royal Navy run a recruitment campaign by mobile-phone video
49 iMetaBusiness software developer Southampton 2007 60.50% 6,010 75 Founders initially worked from a back bedroom on PCs bought with credit cards
50 Reading RoomDigital communications agency Central London 2008 60.27% *9,532 150 Claims a website developed for the YHA achieved a 7,000% return in 12 months
51 MeetingZoneConference call provider Oxfordshire 2008 59.57% 5,873 36 Can manage telephone conferencing services for up to 5,000 callers
52 Exponential-eNetwork services provider Central London 2008 59.23% 10,357 64 Its network speeds enable clients to transfer files of up to 360Gb in one hour
53 Wavex TechnologyIT managed services provider Central London 2007 57.90% 5,880 70 Claims it can resolve the majority of clients’ IT problems in 15 minutes
54 Ip.AccessMobile technology provider Cambridgeshire 2008 57.66% 15,185 121 Claims to have customers on every continent, including Antarctica
55 IpitomiTelecoms and technology provider Central London 2007 56.77% 12,466 88 Customers include Pizza Express and the Man Group
56 PlextekElectronics design consultancy Cambridge 2008 55.99% *28,196 102 Recently launched a portable radar unit called Blighter
57 Summit MediaDigital media agency York 2008 55.81% 15,469 63 20% of staff are inmates operating from within prison walls
58 Intrinsic TechnologyIT consultancy Merseyside 2007 55.23% 12,929 45 Will provide £8m of IT for government’s ‘Building Schools for the Future’ programme
59 AmsphereSoftware testing consultancy Central London 2007 54.95% 8,826 49 Provides expert witnesses to resolve corporate software disputes
60 OB10E-invoicing system provider Central London 2008 54.91% *7,104 136 Says it saved 8.4m sheets of paper last year with its electronic invoice system
61 Entanet InternationalCommunications provider Telford 2007 53.41% *†17,185 65 Company’s headquarters are in a Chinese style purpose-built pagoda
62 BDP Media GroupLearning software developer Central London 2007 52.39% 11,914 56 Clients include Disney and the Department for Children, Schools and Families
63 Nexus OncologyClinical researcher Edinburgh 2008 52.03% 5,495 85 Founder motivated by family’s early brush with cancer
64 LaganGovernment software developer Belfast 2007 49.55% 14,277 151 Claims its government software serves more than 37m citizens worldwide
65 XantusIT consultancy Manchester 2008 49.39% *7,581 49 Boasts 21 FTSE 100 companies among its clients
66 2e2IT services provider Newbury 2007 48.42% *203,202 1344 Hosts the Tesco.com website
67 i-levelDigital communications agency Central London 2008 48.38% *100,590 130 Claims 340,000 teenagers this year sought drug advice from its MSN Frank service
68 TechnetixTelecoms equipment maker West Sussex 2007 48.00% *46,895 180 Will supply fibre-optic cable in home networking equipment to Swisscom
69 SolarcenturySolar technology developer Central London 2008 47.79% *19,428 94 Clients include the Co-operative Group, National Trust and Barratt Homes
70 AdeptraManaged services provider Reading 2007 46.62% 8,229 63 Its payment reminders can be customised to match the recipient’s dialect
71 Griffin InternetInternet service provider Derby 2007 46.45% 9,971 50 Claims to provide internet access for 50,000 businesses
72 TBGSocial media agency Central London 2007 45.51% 11,491 33 Started from a bedroom with a £22,000 bonus earned from founder’s previous job
73 SSLElectronics and software developer Bristol 2007 45.50% 5,240 96 Has 12 PhDs on staff and recruits only candidates with MSc or first-class degrees
74 Nimbus PartnersBusiness software developer Hampshire 2008 45.26% *8,399 82 Clients include HSBC, Toyota and the Valuations Office Agency
75 ProbrandIT reseller Birmingham 2007 44.75% 33,492 55 Claims to search over half a million product lines by price and stock availability daily
76 bet365Online bookmaker Stoke-on-Trent 2008 44.24% *†1,815,022 812 The company owns Premiership football team, Stoke City FC
77 UnanimisDigital advertising agency Central London 2007 44.21% 17,724 45 Claims to have secured the largest mobile advertising deal to date with Shell
78 Stirk Lamont & AssociatesICT consultancy Belfast 2008 44.08% *5,670 64 Upgraded Vodafone Live! in Australia and New Zealand
79 1EEnterprise software developer West London 2007 44.03% *11,037 74 Claims its product Nightwatchman saves on average £43 per computer a year
80 iokoDigital media systems integrator York 2007 43.12% 27,560 198 Helped develop Channel 4’s award-winning on-demand viewing service
81 Southern CommunicationsTelecoms services provider Hampshire 2008 42.97% 7,036 56 Established in 1965, it is one of the oldest telecoms companies in Britain
82 XLN Business ServicesBusiness services provider Central London 2008 42.69% *29,302 85 Founders also run the online stationery firm Euroffice
83 RebellionComputer games developer Oxford 2008 42.67% *11,848 280 Founder is one of twelve people in Britain that takes part in medieval jousting
84 JobpartnersHR software developer West London 2007 42.66% 7,487 73 Its software has been translated into 25 different languages
85 ByBoxDelivery systems operator Oxfordshire 2007 42.64% †24,300 166 Says it delivers more than 20m items a year in Britain
86 VitafloClinical nutrition products developer Liverpool 2007 42.43% 7,901 38 Completed £16m refinancing package in May supported by Merseyside Investment Fund
87 Doctors.net.ukMedical network provider Oxfordshire 2007 41.71% 6,131 66 Claims that more than 25% of NHS doctors access its service every week
88 UnicomTelecoms services provider Manchester 2007 41.17% 37,097 349 Encouraging its customers to go green and switch to paperless billing
89 Office Canopy GroupProcurement software developer Surrey 2007 40.41% 11,500 41 Says it gives its software to customers for free
90 Listening CompanyCall-centre software provider West London 2007 40.17% 37,021 1211 Claims to manage 30m conversations a year through its call centres
91 PCS Business SystemsIT and office product supplier Kettering 2007 40.10% 13,071 40 Started with £100 and a telephone; founder set up the business with his credit card
92 CoexisSecurities software provider Hertfordshire 2007 40.08% 5,675 72 Held a board meeting 15,420 feet up Kilimanjaro in Tanzania
93 ICS SolutionsMicrosoft technology consultancy Basingstoke 2007 39.71% 7,702 45 Says it created a 2,800-page website and extranet for Virgin Vie
94 BetfairOnline bookmaker West London 2007 39.70% 181,928 906 Says it can match over 15m betting transactions between punters in a day
95 XbridgeOnline insurance broker Central London 2007 39.60% 5,991 116 Founder Brad Liebmann says he has Microsoft’s first PC in his office
96 Rule FinancialBusiness and IT consultancy Central London 2007 37.93% 18,697 155 Says it is leading a bank project handling 3m derivative trades a day
97 EdenbrookSystems integrator Central London 2007 36.65% *25,173 171 Recently won a contract to redesign Easyjet’s entire web architecture
98 The GL CompanyAccounting software developer Amersham 2007 36.53% 6,185 48 Its accountancy software is used by clients including Nintendo, BSkyB and Calor Gas
99 Cello ElectronicsLCD TV manufacturer North Yorkshire 2008 35.76% †21,757 2 Has a ‘green’ button on its remote controls that turns the television off completely
100 ANS GroupHosting services provider Manchester 2008 35.68% *10,286 65 Founded in the bedroom of former child actor Scott Fletcher

* supplied by company  † annualised figure