Rank Company Location Year end % annual profit growth Latest profits £000 Latest sales £000 Staff Comment
1 AnescoEnergy efficiency consultancy Reading Mar 15 179.15% 20,706 160,194 114 Working with conservation charity RSPB, which is nurturing biodiversity at its solar sites
2 GtechAppliance manufacturer Worcestershire Nov 15 162.83% *13,874 *66,168 72 Has sold more than 22m domestic appliances in 19 countries
3 Hopkins HomesHousebuilder Suffolk Apr 15 162.14% 22,842 95,471 115 Won last year's Sunday Times British Homes Development of the Year award
4 First UtilityEnergy supplier Warwick Dec 14 156.61% 11,600 562,182 477 Has partnered with Royal Dutch Shell to launch a new venture in Germany
5 SolarcenturySolar technology developer Central London Mar 15 128.84% 10,682 222,329 200 Donated a rooftop solar system for the Tate Modern in London
6 The Hut GroupOnline retailer Northwich Dec 15 125.59% *18,082 *333,493 1,231 Plans to invest £10m in an American production facility for its Myprotein brand
7 Balmoral GroupPolymer engineer and manufacturer Aberdeen Mar 15 125.12% 30,962 136,534 557 Says it is one of only four firms worldwide making deep-water buoyancy products
8 moneyPrice comparison website Gloucestershire Oct 14 123.89% 15,430 23,290 28 Website compares 17,000 financial products and attracts millions of visitors every month
9 Reward GatewayEmployee engagement technology Central London Jun 15 121.55% 6,590 187,529 211 Employees shared a £6.5m windfall following last summer's deal with Great Hill Partners
10 BrewDogBrewery Aberdeenshire Dec 15 120.11% **5,500 *45,000 580 Shipped 41m bottles of craft beer and opened 17 new bars last year
11 Mobile Phones DirectOnline mobile phone retailer Berkshire Mar 15 112.24% 5,187 63,581 56 Investment in online marketing has helped it to boost profits
12 Churchill Retirement LivingHousebuilder Hampshire May 15 111.61% 43,515 142,780 420 Is developing the site of the Torquay hotel that inspired TV comedy Fawlty Towers
13 Able GroupPorts, developments and decommissioning Billingham, Cleveland Dec 15 110.92% *11,047 *22,347 87 Is developing a £450m marine energy and logistics port on the River Humber
14 Tangle TeezerHair products supplier South London Mar 15 109.06% 7,259 23,176 22 Sells 20 brushes every minute in more than 70 countries
15 Principal HotelsHotel operator Harrogate Dec 14 105.13% 62,127 308,177 5,857 Runs city centre hotels in landmark buildings in Edinburgh, York, Manchester and London
16 MotorpointCar supermarket Derby Mar 15 103.76% 12,097 563,287 479 Opened its ninth UK site near Gateshead last year at a cost of £5m
17 AlphaSightsBusiness information provider Central London Dec 14 101.09% 6,926 31,550 193 Clients include seven of the top 10 global investment banks
18 Oasis Dental CareDental care provider Bristol Mar 15 99.24% 9,064 234,001 3,149 Has more than 350 dental practices across the UK
19 Van ElleEngineering contractor Nottingham Apr 15 97.14% 7,156 73,586 384 Its average contract value rose more than 80% to £65,000 in 2015
20 Hargreave HaleStockbroker and fund manager Blackpool Mar 15 94.41% 3,740 34,604 190 Opened offices in Norwich and Nottingham last year
21 Wrights GroupBus manufacturer Ballymena, Co Antrim Dec 14 94.03% †12,928 †237,705 1,553 Built London's fleet of 1,000 hybrid Routemaster buses
22 Fox International GroupFishing tackle supplier Northwest London Dec 14 93.41% 4,108 27,757 86 Sells 3,000 angling products from hooks to boats in 30 European countries
23 Bill’s RestaurantsRestaurant operator Central London Aug 15 91.49% †6,547 †89,952 2,371 Its online shop sells own-brand products made from locally sourced ingredients
24 AnnodataCloud & managed services Hertfordshire Jun 15 91.28% 5,832 65,162 296 Manages more than 40,000 telephony, IT and print assets for clients across Britain
25 United Trust BankBank Central London Dec 15 90.23% 15,200 31,621 109 Launched a specialist second-charge mortgage division last year
26 Mech-Tool EngineeringProtection equipment manufacturer Darlington Mar 15 89.60% 4,308 35,333 212 Recently won contracts in South Korea and Kazakhstan
27 Redfern TravelBusiness travel agent Bradford Mar 15 88.81% 4,991 232,832 106 Its software helps companies to track their employees around the world
28 The Miller GroupHousebuilder Edinburgh Dec 15 88.78% *76,700 *525,600 722 Opened more than 20 new sales offices last year
29 OktraOffice interior design and fit-out Central London May 15 88.18% 4,245 47,061 72 Has designed and built offices for Lonely Planet, Ricoh and Nando's
30 Aspin GroupCivil engineer Hertfordshire Jul 15 86.91% 5,426 37,776 188 Has been helping to build flood defences on the Somerset Levels
31 Mint VelvetLadies' clothing retailer High Wycombe Apr 15 86.31% 10,768 63,107 519 Opened its first international stores in Dubai and Switzerland last year
32 MissguidedOnline fashion retailer Manchester Mar 15 86.08% 4,845 87,195 429 Its website sells more than 8,000 products and has 3m registered users
33 GlendinningQuarry and concrete products Ashburton, Devon Apr 15 85.64% 4,625 34,067 240 Says it is Devon's largest family-owned quarrying, concrete and road contracting firm
34 OriginBifold door manufacturer High Wycombe Dec 14 85.50% 3,447 16,972 117 Makes more than 10,000 bifold doors every year
35 Hays TravelTravel agency Sunderland Oct 15 85.16% 6,263 305,984 977 Has rebranded all Bath Travel stores under the Hays brand
36 Drayton GroupCar dealer West Midlands Dec 14 84.49% 5,414 241,343 387 Has seven showrooms in the West Midlands
37 ICG MedicalMedical recruitment consultancy Central London Mar 15 83.36% 5,074 77,471 175 Last year ICG demerged technology recruiter Arrows Group to focus on healthcare
38 KinapsePharmaceutical regulations consultancy Southwest London Mar 15 83.31% 3,862 20,839 337 Nine of the world’s top 10 pharmaceutical companies work with Kinapse
39 ExcitechCAD services & consultancy Enfield, Middlesex May 15 82.48% 3,305 31,680 116 Benefitting from the government's digital modelling mandate for construction firms
40 Crown TimberTimber importer Gloucestershire Dec 14 80.97% 6,679 123,185 67 Distributes its timber from terminals in Dundee, Humberside, Sheerness and Wicklow
41 EsendexBusiness messaging services Nottingham Jun 15 80.95% *3,155 *21,451 108 Used by Premier League clubs to send star player voice messages to supporters
42 CMS Window SystemsDoor and window systems Cumbernauld Mar 15 80.92% 3,591 28,399 199 Has developed a zero-carbon window using 100% recycled materials
43 Wilkinson EyreArchitect Central London Mar 15 80.90% 6,419 22,325 185 Winner of more than 250 design awards, including the Stirling Prize and Lubetkin Prize
44 LION TrackhireTemporary roadway provider Worksop Mar 15 80.85% 4,565 15,427 132 Has supplied its trackways to Wimbledon and the Chelsea Flower Show
45 ChildrensalonChildrenswear retailer Tunbridge Wells Dec 15 80.74% *10,791 *42,778 202 Launched Instagram-style website last year to build customer engagement
46 Fairview New HomesHousebuilder North London Dec 14 80.28% 53,927 157,040 204 Builds about 650 new homes a year
47 Thomas HomesHousebuilder Thatcham, Berkshire Sep 15 79.95% 8,620 33,385 31 Recent projects include conversion of the old Great Western Railway works in Swindon
48 Euro GaragesFuel forecourt operator Blackburn Jul 15 78.86% 41,324 815,635 2,745 TDR Capital takes minority stake in 2015, valuing Euro Garages at £1.3bn
49 RidgeonsTimber and builders' merchant Cambridge Dec 14 78.20% 6,219 139,763 773 Opened its fifth Anglia Tool Centre in Milton Keynes last September
50 The EntertainerToy retailer Buckinghamshire Feb 15 76.71% 8,638 129,126 1,301 Is the biggest independent toy retailer in Britain, with 116 stores
51 Gravity MediaTV production equipment provider Watford Dec 14 76.51% 8,365 62,218 165 Acquired Hyperactive Broadcast for an undisclosed sum last December
52 Acorn InsuranceSpecialist car insurer Liverpool Dec 14 76.39% 5,685 19,945 315 Offers car insurance for non-standard vehicles and their owners
53 MacDonald HumfreyTechnology systems integrator Luton Dec 14 75.63% 18,083 61,909 290 Eurostar used this firm's technology to upgrade its security systems in 2015
54 Esh GroupConstruction contractor Durham Dec 14 75.32% 11,603 276,761 1,105 Recently launched a new £3.6m training academy
55 Krispy KremeDoughnut retailer and wholesaler Surrey Feb 15 73.56% 7,319 52,192 1,001 Its largest stores can produce up to 35,000 doughnuts a day
56 ClaranetIT services provider Central London Jun 15 72.44% 11,773 133,336 797 Founded as a dial-up ISP pioneer and will turn 20 this year
57 Jato DynamicsMotor industry information Harrow Dec 14 71.54% 8,455 57,411 587 Provides automotive research covering 50 international markets
58 Patersons QuarriesQuarry operator Glasgow Nov 14 69.91% 3,570 64,064 881 Operates six quarries throughout central Scotland
59 ApicalImaging technology developer Central London Mar 15 69.68% 8,656 16,615 64 Its microchip technology is used in more than one billion mobile devices
60 Advance Construction GroupConstruction services Bellshill, North Lanarkshire Mar 15 69.26% 8,176 133,454 1,047 Has worked on construction projects for Tesco, Asda and Sainsbury's stores
61 ID MedicalRecruitment consultancy Milton Keynes Dec 14 68.56% 4,546 123,916 342 Has more than 45,000 medical candidates on its books, from doctors to physiotherapists
62 Story HomesHousebuilder Carlisle Mar 15 68.36% 15,223 83,886 177 Completed 410 properties last year, up 63% on 2014
63 Maritime GroupContainer transport and logistics Suffolk Dec 14 68.27% 14,271 168,663 1,370 Moves more than 13,500 freight containers around the UK every week
64 BPDBuilding product manufacturer Cheshire Mar 15 68.19% 3,856 29,603 257 Its protective membranes are sold throughout Europe
65 Randox LaboratoriesMedical diagnostics manufacturer County Antrim Dec 14 68.05% 16,607 92,017 1,081 Says it brings more products to the market each year than any other diagnostics firm
66 Butcher’s Pet CarePet food manufacturer Northamptonshire Jul 15 67.59% 7,258 92,663 293 Produces 5m cans of dog and cat food each week
67 Sahara Presentation SystemsAudio-visual products supplier Kent Dec 14 67.57% 3,472 34,784 73 Its interactive touchscreens are used in school classrooms all over Britain
68 QuanticateClinical research provider Hertfordshire Dec 14 66.69% 3,713 14,776 206 Has delivered 1,000 research projects since it was founded in 2007
69 GCH CapitalManufacturing conglomerate West London Dec 14 66.69% 7,089 59,267 194 Has acquired seven manufacturing businesses in six years
70 JJ Food ServiceFood distributor Enfield, Middlesex Mar 15 66.38% 11,031 181,724 779 Delivers to more than half of its 30,000 customers every week
71 Martin GroupTransport and waste service provider Derbyshire Jul 15 66.22% 11,421 102,498 695 Has erected thousands of metres of security fencing for clients such as Network Rail
72 White Clarke GroupFinance software developer Milton Keynes Dec 15 65.26% *4,000 *35,000 380 Its asset finance software is used by 100 customers in 30 countries
73 Four CommunicationsCommunications agency Central London Dec 15 64.86% *4,050 *42,500 240 In August last year BGF acquired a 30% stake in the business for £10m
74 Chevron Traffic ManagementTraffic management service provider Oxfordshire Sep 14 64.82% 5,799 36,385 405 Provided temporary traffic management services for the London Marathon
75 City & CountryHousebuilder Essex Mar 15 64.36% 16,155 51,511 119 Converts historic and listed buildings into apartments and houses
76 JSM GroupUtilities service provider Hertfordshire Dec 14 64.32% 3,278 40,543 164 Opened its Northern Hub near Rotherham in 2014
77 HeathcoatFabrics manufacturer Devon May 15 63.80% 5,208 48,799 463 Its specialist textiles will form part of 'Moses' gate system to protect Venice from floods
78 Advanced InsulationInsulation products manufacturer Gloucester Sep 15 61.57% *14,357 *58,297 352 Expanded operations in Gloucester, Plymouth, Nottingham, Houston and Korea last year
79 Animal Friends Pet InsurancePet insurance provider Wiltshire Dec 14 61.50% 5,188 14,531 108 Donates to 300 animal charities, including Born Free and Greyhound Rescue
80 WasabiSushi bar chain Central London Dec 14 61.04% 4,424 70,352 1,346 Has 45 restaurants in Britain and two in America
81 Premier DecorationsFestive decorations wholesaler West London Jun 15 60.83% 5,590 37,239 79 Has offices in Hong Kong and a sister company in Guangzhou, China
82 George Roberts ScaffoldingScaffolding equipment supplier Liverpool Oct 14 60.61% 3,223 30,828 57 Exports its scaffolding and safety equipment to six continents
83 RobertsonConstruction services Stirling Mar 15 60.42% 11,538 288,373 1,328 Working on the new £100m Macallan distillery and visitor centre for the Edrington Group
84 SymphonyFurniture supplier Barnsley Dec 14 59.32% 5,904 157,157 1,234 Owns premium brand Charles Yorke, which offers bespoke traditional kitchens
85 The Edinburgh Woollen MillClothing retailer Dumfriesshire Mar 15 59.09% 83,123 562,596 10,205 Plans to open 100 new stores and create 800 jobs in the next two years
86 Steadfast EngineeringThreaded screw manufacturer Hyde, Cheshire Mar 15 59.04% 4,479 17,897 96 Says it is Shell UK's primary supplier of stud bolts and fasteners
87 TithegroveCivil engineer Swindon Mar 15 58.58% 3,409 54,722 289 Took part on the BBC's DIY SOS programme The Big Build last year in Cheltenham
88 Evans Vanodine InternationalChemicals manufacturer Preston Mar 15 58.23% 3,225 26,640 146 Has manufacturing plants in countries including China and South Africa
89 PeninsulaEmployment law consultancy Manchester Mar 15 57.35% 24,207 115,981 1,025 Runs a 24-hour health and safety advice line
90 John AdamsToy and leisure products wholesaler Huntingdon Dec 14 57.02% 4,817 26,733 34 Launched its baking range for kids to coincide with television's The Great British Bake Off
91 bet365Online bookmaker Stoke-on-Trent Mar 15 56.84% 413,307 1,570,625 3,179 Has 22m customers in more than 100 countries
92 TelegenicOutside broadcasting equipment High Wycombe Mar 15 56.59% 3,060 23,884 93 Its trucks helped to broadcast Rugby World Cup and Six Nations matches last year
93 Al Murad TilesTile and stone retailer Morley, West Yorkshire Mar 15 55.91% 6,105 32,378 247 Its 120,000 sq ft warehouse in Leeds stocks more than 10m tiles
94 LovehoneySex toys retailer Bath Mar 15 55.65% 3,274 44,955 171 Has exclusive rights to manufacture Fifty Shades of Grey sex toys and bondage items
95 CLC GroupPainting and maintenance contractor Southampton Dec 14 55.59% 7,058 101,397 854 Maintains 6,200 properties for the Ministry of Defence in the north of England
96 Mick GeorgeEarthworks, haulage and plant hirer St Ives May 15 54.87% 11,380 75,938 469 Has expanded from a single tipper truck in 1978 to a fleet of more than 300 vehicles
97 Blue ChipIT consultancy and data centre Bedford Mar 15 54.41% 4,252 34,611 198 Says its bespoke cooling system has made it one of the greenest data centres in Europe
98 AvectoIT security software developer Manchester Jun 15 54.30% 3,516 14,675 119 Helps protect more than 600 global brands from cyber threats
99 Cormar CarpetsCarpet manufacturer Lancashire Sep 14 53.88% 6,635 104,278 240 Has made carpets at its two Lancashire mills for 60 years
100 Buckingham Group ContractingCivil engineering contractor Buckingham Dec 14 53.61% 5,282 308,659 331 Completed work last year on the £320m Oxford Parkway to London Marylebone rail link