RankCompanyLocationYear end% annual profit growthLatest profits £000Latest sales £000StaffComment
1PaymentsensePayment processing servicesWest LondonMar 16203.41%14,07544,554203Serves 57,000 small businesses and processed £5.5bn worth of card payments last year
2Avon GroupSeal manufacturerBristolMar 16148.51%11,14548,295504Exports its seals and gaskets to 40 countries
3Heatherwick StudioArchitect and designerCentral LondonMar 16141.16%10,43527,843180Is designing Google's HQ in King’s Cross, north London, and in Mountain View, California
4Howarth Timber GroupTimber products supplierLeedsMar 16133.38%9,292169,232914This family-owned timber supplier dates back to 1840
5Your World Recruitment GroupHealthcare recruitment consultancyCentral LondonDec 15132.21%6,89598,232174Places more than 2,300 healthcare staff a day
6MuntonsMalt manufacturerSuffolkJan 16129.46%9,42491,479315Produces 200,000 tons of malt and malted products a year
7Bruntingthorpe Proving GroundAerodrome and vehicle test trackLutterworthJun 15114.49%5,20018,77262Until 1962 it was used as a heavy bomber base, codenamed ‘Big Thunder’
8Plan B HealthcareRecruitment consultancyCentral LondonSep 15113.60%4,93824,39243Founder Kevin Coyle owns five recruitment firms
9HH GlobalMarketing services supplierSouth LondonMar 16109.35%5,845202,181656Opened a Hong Kong office last November to support its Asia-Pacific business
10Sahara Presentation SystemsAudio-visual products supplierKentDec 15107.18%4,63738,26570Sells audiovisual products to the education sector in the UK and internationally
11GtechAppliance manufacturerWorcesterNov 16105.83%*9,164*91,236138Has sold more than 22m domestic appliances in 19 countries
12Britannia HotelsHotelierAltrinchamMar 16105.30%34,18084,1052,011Has some hotels in historic buildings such as Warwickshire's grade II-listed Bosworth Hall
13Gordons ChemistsChemistBanbridge, Co DownApr 16103.71%5,08880,570655Says it is the largest independent pharmacy chain in Northern Ireland
14Balmoral GroupPolymer engineer and manufacturerAberdeenMar 16101.24%32,931134,450576Demand from offshore oilfields in Brazil and West Africa are sustaining profits
15Lawrence DavidTrailer manufacturerPeterboroughMay 16100.05%4,90197,273253In 2015 it won a three-year contract to make all of Sainsbury’s home delivery vehicles
16Lioncourt HomesHousebuilderWorcesterMar 1698.52%9,00940,52454Last year it completed the sale of 190 homes, double the amount sold in 2015
17L & J HoldingsCivil engineerWalsallNov 1598.32%15,35558,92959Provides its services to national construction firms and housebuilders
18Wilkinson VintnersWine merchantNorthwest LondonJun 1697.56%*3,892*22,9729Has a case of 1988 Romanée-Conti Burgundy in stock priced at £180,000
19MobicaSoftware engineer and testerCheshireDec 1595.40%11,16938,532808Private-equity firm Inflexion acquired a minority stake in September 2015
20Strata HomesHousebuilder and developerDoncasterDec 1595.01%9,97598,900162The government’s Help to Buy scheme has contributed to its growth
21Churchill Retirement LivingRetirement housebuilderHampshireJun 1694.63%*62,781*186,956492Dame Esther Rantzen opened the firm's 100th development last December
22Evolution FundingMotor finance intermediaryChesterfieldDec 1694.18%*6,878*60,576276Last year it financed more than 31,000 vehicle loans and increased its rental fleet to 1,800
23Morrisroe GroupGroundworks and constructionBorehamwood, HertsOct 1593.10%9,891114,550162Landmark projects include One Tower Bridge in London and the Library of Birmingham
24SymphonyFurniture supplierBarnsleyDec 1590.76%12,474182,7131,423Owns premium brand Charles Yorke, which offers bespoke traditional kitchens
25LGCAnalytical services laboratorySouthwest LondonMar 1690.66%48,772247,5362,337Is the designated UK national institute for chemical and biological measurement
26Premier GroupSheet metal engineerCoventryMar 1690.28%3,61318,001232Manufactured the iconic torch carried at the London 2012 torch relay
27ChargePoint TechnologyPrecision valve manufacturerLiverpoolDec 1689.26%*3,367*11,41560Chief executive Chris Eccles led a buyout backed by LDC in January
28TuskerCar benefit specialistsWatfordDec 1689.22%*9,430*140,875170Provides over 320 car benefit schemes for more than 850,000 employees
29Di Maggio’sRestaurant groupGlasgowMay 1689.03%6,29533,798784Plans to open two new Café Andaluz restaurants later this year
30Tobermore Concrete ProductsConcrete products manufacturerCounty LondonderryApr 1687.98%6,06932,364198Founded some 75 years ago as a sand and gravel business
31Spark EnergyEnergy supplierSelkirkJun 1687.88%5,786126,320308Chief executive Chris Gauld led a buyout backed by Limerston Capital last August
32Clarkson EvansElectrical contractorGloucesterSep 1687.46%*3,739*47,551719In 2016 it wired 10% of all new homes built in England and Wales
33Animal Friends Pet InsurancePet insurance providerWiltshireDec 1586.85%7,58217,773125Has donated over £3m to more than 300 animal welfare charities
34Green Frog PowerShort-term reserve electricity providerColeshill, WarwickshireMar 1686.57%12,54616,8255Is able to provide reserve power to the National Grid within 30 seconds
35Haywood & PadgettBakeryBarnsleyOct 1586.19%4,55623,241138Produces 4.5m scones every week, supplying most large UK supermarkets
36Bill’s RestaurantsRestaurant operatorCentral LondonAug 1686.04%8,380110,5472,909Last financial year it served 5.8m eggs and 468,000 avocados to more than 7.5m customers
37Taylor MaxwellBuilding products supplierBristolMar 1685.94%5,865173,600175Installed 4,000 sq m of oak flooring for Oxford's award-winning Blavatnik school of government
38GreenrayGas turbine servicerLincolnDec 1585.86%3,50325,58396Overseas markets include India, Abu Dhabi and Iraq
39IT LabIT services providerCentral LondonMar 1684.94%*4,737*31,118331Chief executive Peter Sweetbaum led a buyout backed by ECI Partners last year
40BladeRoomModular data centre designerCheltenhamMar 1683.48%†8,567†40,63162Has built more than 100 healthcare facilities in the past six years
41Carey GroupBuilding contractorWembleyMar 1682.06%18,203430,7071,173Its recovery plant in Wembley can process 1m tons of waste a year
42Readie ConstructionConstruction contractorRomfordMar 1681.77%3,53592,23173Its website allows users to view live webcams of its current projects
43Fox International GroupFishing tackle supplierEssexDec 1581.13%5,20029,147103Mayfair Equity Partners acquired a majority stake in 2015 valuing the group at £50m
44Story HomesHousebuilderCarlisleMar 1680.74%†22,093†121,046211Expects to complete 800 homes in 2017, up 42% on last year
45Omar GroupPark home manufacturerSuffolkApr 1679.27%†3,912†30,838333Opened a £1.1m extension to its Suffolk factory last year, creating 80 jobs
46The Right Fuelcard CompanyFuel card providerLeedsJun 1679.05%3,327136,89462Acquired Total’s fuelcard division in partnership with fuel forecourt operator Rontec in 2012
47Silentnight GroupBed manufacturerLancashireJan 1678.68%7,752137,4991,018Makes half a million beds each year through brands such as Sealy and Layezee
48WatchfinderPre-owned watch retailerKentMar 1678.62%3,34060,777108Sells a watch every 30 minutes, worth an average of £5,000 each
49Radnor HillsBottled drinks manufacturerPowysMay 1676.73%6,47333,824126Produced 230m units of bottled drink last year, working at 58% of its production capacity
50MVFDigital marketing agencyNorth LondonMar 1676.72%7,87639,009279Opened its first overseas office in 2015, in Texas
51Vets NowOut-of-hours vet surgeriesDunfermlineMar 1676.16%4,13036,7591,103Says it treats about 100,000 small animals every year
52MAATS TechMarine engineering consultancyWinchesterSep 1676.11%*8,395*33,28840Recently completed delivery of 11 converted ships for customers in Brazil
53GlendinningQuarry and concrete productsAshburton, DevonApr 1675.90%6,67633,298224Says it is Devon's largest family-owned quarrying, concrete and road contracting firm
54Vital EnergiEnergy services providerBlackburnJun 1675.74%6,300106,766330Installed the underground heating network for the BBC's Media City in Manchester
55Paperchase ProductsStationery and card retailerCentral LondonJan 1675.65%4,929119,1852,006Plans to open its first stores in America later this year
56BrickabilityBrick supplierBridgendMar 1675.60%4,65172,640101Has created a brick calculator to work out the exact number of bricks required for a project
57Bennett HomesHousebuilderSuffolkDec 1575.26%3,42317,42144Currently has eight new housing developments in East Anglia
58SDL GroupResidential property servicesNottinghamMar 1674.88%3,52925,422498Says its acquisition of Graham Penny makes it Britain's fourth biggest property auction house
59AB2000Plant hire businessGlasgowJan 1674.81%4,08025,581233Invested £10m last year in new plant machinery and equipment
60PureGymGym operatorLeedsDec 1573.87%13,536125,201960Olympic champion cyclist Sir Chris Hoy is an adviser to the business
61PennyfarthingHousebuilderHampshireJan 1673.60%5,66135,82365Builds coastal homes in Dorset and Hampshire
62MicroliseVehicle tracking developerNottinghamJun 1673.47%3,18441,224347Is setting up operations in Dubai to add to offices in India and Australia
63Talley GroupMedical device manufacturerHampshireOct 1573.47%6,09223,809210Opened a custom-built research and development facility at its Hampshire base last year
64PN DalyUtilities contractorRochdaleSep 1573.25%3,93031,725377Provided power infrastructure for more than 150 tram stops on the Manchester Metrolink
65Premier DecorationsFestive decorations wholesalerWest LondonJun 1673.12%7,30738,49080Says it is Britain's largest purveyor of Christmas decorations
66Net World SportsOnline sports goods retailerWrexhamSep 1672.60%*3,048*11,86762Manufactures its own PVC football goals
67BrintonsCarpet manufacturerKidderminsterOct 1672.19%†8,837†87,6661,796Makes its carpets in Portugal, Poland and India — as well as in Kidderminster and Telford
68DurbinPharmaceuticals supplierNorthwest LondonDec 1672.09%*5,919*77,012146Supplies developing communities with low cost, inflatable solar lights
69Collard GroupDemolition, haulage and skip hireEversley, HampshireDec 1571.49%4,74426,356161The founder Rob Collard is a former British Touring Car race winner
70FinnebrogueArtisan food producerCounty DownAug 1571.42%4,64444,910245Says it is becoming Marks & Spencer’s sole supplier of sausages
71AlphaSightsBusiness information servicesCentral LondonDec 1571.17%14,40848,617269Thirty-seven languages are spoken across its eight international offices
72Delta GroupMarketing services providerEast LondonDec 1569.99%5,69066,873595Creates 100m in-store display products every year
73Stowell ConcreteConcrete products manufacturerYatton, BristolJun 1669.85%4,30725,73072Operates three concrete factories in Somerset and is planning a fourth in the southwest
74MPM ProductsPet food producerMacclesfieldDec 1669.49%*5,054*47,38256Exports its premium pet food to 46 countries
75Hollingsworth GroupCivil engineerFlintshireApr 1668.93%4,81619,17856Completed construction of one of the largest robotic jig foundations in the UK aerospace industry
76Numeric FuturesTelecoms resellerBirminghamMar 1668.67%4,03721,6858Works with Vodafone, Colt Telecom, Virgin Media and BT
77Frank Recruitment GroupIT recruitment consultancyNewcastle Upon TyneNov 1668.56%*15,451*127,457810Private equity firm TPG acquired a majority stake in April last year
78J Browne GroupCivil engineerEnfield, MiddlesexMar 1668.23%3,72735,649153Has extended its contract with Thames Water until 2020
79PrincipleBrand implementation agencyHuddersfieldDec 1567.85%5,51199,231396Opened its 15th office last year, in Mumbai
80NotemachineCash machine operatorPowysJun 1667.76%22,191142,723987Operates 9,000 cash dispensers, including 550 in German supermarkets and shops
81Grant WestfieldWashroom manufacturerEdinburghDec 1567.56%5,53436,014207Fitted out the 'super-VIP' bathrooms at BBC Television Centre in Broadcasting House
82Enra GroupSpecialist loan providerBorehamwood, HertsDec 1666.38%*18,975*39,02380Its West One Loans subsidiary lent almost £400m in 2015
83Castle ViewLeisure services managerStirlingMar 1666.20%9,868137,0884,746Runs more than 150 leisure facilities for 50 local authorities
84APS GroupTomato and salad growerCheshireDec 1565.66%3,30778,989474Harvests more than 20,000 tons of tomatoes every year
85Reward GatewayEmployee engagement servicesCentral LondonJun 1664.51%*9,693*224,971334Launching a £4m fund, backing initiatives to help people get into better, safer and fairer jobs
86FairviewHousebuilderNorth LondonDec 1564.39%64,755178,193210Develops brownfield sites in London and the southeast of England
87Harvey Water SoftenersWater softener manufacturerOld Woking, SurreyDec 1563.35%5,83523,72695Sells water softeners that can reduce heating bills and help appliances last longer
88J & S AccessoriesMotorcycle accessories retailerOakmere, CheshireDec 1563.08%3,41923,600189The company sold 45,092 motorcycle helmets in 2016
89MJM GroupSpecialist joinerNewry, County DownDec 1562.90%4,97258,894185Completed a refit of the world’s largest cruise ship, Oasis of the Seas, in 2014
90ActivTradesFinancial markets brokerCentral LondonDec 1561.44%11,55831,409179A leading provider of trading services in spread betting, forex and contracts for difference
91Mobile Phones DirectOnline mobile phone retailerNewburyMar 1661.20%6,36879,25396Sells the latest smartphones from manufacturers such as Apple and Samsung
92HillHousebuilderWaltham Abbey, EssexDec 1560.89%30,759303,840335In 2015 it built more than 1,500 new homes in London and the southeast of England
93ClaranetIT services providerCentral LondonJun 1660.67%17,200152,500980Expanded into Italy with a Milan-based public cloud operation in February
94MinkyHousehold goods manufacturerRochdaleOct 1559.96%4,45239,125337All of its ironing boards and covers are manufactured in Lancashire
95The Westmorland FamilyMotorway services operatorPenrith, CumbriaJun 1659.62%6,77685,400878Its award-winning Gloucester services on the M5 is supplied by 200 local food producers
96EndavaIT services providerCentral LondonJun 1659.42%19,937115,4322,533Last year it opened a development centre in Bogota, Colombia
97Millbrook IndustriesFurniture manufacturerSouthamptonJun 1659.22%6,939108,662743Manufactured the doors for No 10, 11 and 12 Downing Street
98Morris LesliePlant hire businessPerthApr 1657.35%7,72940,063207The average age of its equipment is 22 months
99Whitehouse LeisureSoft toy distributorBasildon, EssexDec 1557.32%*†10,100*†58,14040Holds the leisure licence to distribute Disney soft toys across the UK, Middle East and Africa
100HavwoodsHardwood flooring specialistLancashireDec 1557.25%3,93033,91589Supplies more than 1,000 variants of its wooden flooring