Rank Company Location Year end 2-year av intl sales growth pa % International sales £000s Total sales £000s Staff Comment
1 UNiDAYSStudent verification services Nottingham Apr 17 299.32% 3,332 15,712 144 Each month its discount programmes are used by 8.5m students in 32 countries
2 MercatoSales software developer Birmingham Dec 16 197.09% 2,868 5,947 101 Supplies software to multinational companies including IBM and Lenovo
3 Plimsoll ProductionsTV show producer Bristol Aug 17 190.91% *12,801 *14,636 42 Its wildlife documentary Earth Live was broadcast live in more than 170 countries
4 TelensaWireless control systems developer Cambridge Mar 17 189.70% 10,302 22,836 63 Its streetlights are used in more than 80 cities worldwide to save energy and cut maintenance costs
5 EnSilicaSilicon chip designer Wokingham May 17 186.65% *6,093 *7,198 42 Designs silicon chips used in mobile phones and driverless cars, from offices in the UK, US and India
6 The TALL GroupPrinting services provider Cheshire Dec 16 178.50% 3,824 13,311 150 Supplied 20m ballot papers for Uganda’s general election in 2016
7 Outplay EntertainmentMobile games developer Dundee Dec 16 177.95% 14,870 15,585 170 Its Alien Creeps game has been downloaded by 20m players around the world
8 George Baker GroupTransport logistics consultancy Suffolk Jan 17 172.45% 7,037 17,156 58 Helps exporters navigate customs and delivers goods throughout Europe by road, rail and air
9 RockfordElectrical component manufacturer Suffolk Dec 16 161.63% 6,526 16,087 283 Its electrical systems are used by aerospace and defence companies in the EU and Middle East
10 Stiltz LiftsLift manufacturer West Midlands Dec 17 160.76% *6,232 *12,486 142 Its freestanding lifts have been retrofitted into homes in more than 20 countries
11 KampaCamping equipment wholesaler Essex Dec 16 147.26% 6,142 23,333 24 Its AirFrame technology tents are distributed to South Korea, Denmark and Germany
12 Reveal MediaBody camera designer Surrey Dec 16 136.41% 1,615 8,168 37 Supplies body cameras to police and security forces in more than 30 countries
13 DianomiContent marketing agency Central London Dec 16 134.16% *6,209 *8,702 22 Places ads on global financial news sites including Marketwatch, Reuters and CNN Money
14 AFL ArchitectsArchitect Manchester Jun 17 133.50% 2,579 6,312 62 Has worked on sports stadiums in Qatar, Iraq and Turkmenistan
15 SymetricaDetection equipment manufacturer Southampton Sep 17 132.83% 9,758 10,838 59 Its technology is used at ports across the world to detect materials used in dirty bombs
16 CDEnviroRecycling services provider County Tyrone Dec 16 118.94% 4,264 10,901 47 Companies in four continents use its technology to reduce waste sent to landfill
17 Monty BojanglesChocolate manufacturer Surrey May 17 117.08% *1,805 *5,173 23 Its largest market is the US, where customers bought 75 tons of its chocolate truffles last year
18 IpsotekVideo analytics provider Southwest London Dec 17 114.99% *6,930 *7,450 45 More than 90% of sales are generated overseas, mainly from clients in the Middle East and China
19 Military 1stOnline military clothing retailer Manchester Jun 16 113.75% *†3,455 *†6,879 25 Dispatches more than 35,000 online orders each month from its Manchester warehouse
20 Wool WarehouseCraft products retailer Leamington Spa May 17 111.41% *1,932 *7,490 41 Its range of 20,000 products is popular in the US, Australia and New Zealand
21 The Pi HutOnline electronics retailer Suffolk Apr 17 107.95% *†4,253 *†7,325 6 Sells Raspberry Pi computers and accessories to customers in more than 50 countries
22 naughtoneFurniture designer and manufacturer North Yorkshire May 17 106.91% *9,179 *15,177 34 Has plans to start operating in China to serve the growing Asian market
23 XceedIT management consultancy Central London Nov 16 102.39% 13,115 19,760 137 Recently entered into a partnership with a US fintech firm to help reduce card fraud
24 Minerva Research LabsBeauty supplement developer Central London Jul 17 102.22% *5,200 *8,598 33 Last year it launched in Spain’s El Corte Inglés and secured deals in Canada, China and Qatar
25 HighQCloud software developer Central London Apr 17 99.53% 6,479 14,398 268 Is opening its new US headquarters in Kansas City next month
26 DittoOnline music distributor Liverpool Apr 17 98.36% *3,428 *7,569 50 Works with more than 150,000 music acts and last year opened offices in India, Mexico and Spain
27 CroudDigital marketing agency East London Mar 17 97.61% *4,225 *7,714 83 Has a network of 1,200 digital marketing experts who help deliver campaigns in 107 countries
28 REPL GroupIT consultancy Warwickshire Mar 17 95.34% 9,788 16,958 206 Customers include Marks & Spencer, Argos and Aldi’s US business
29 Welland PowerGenerator manufacturer Lincolnshire Mar 17 94.63% 17,676 20,101 23 Its diesel generators power schools, hospitals and police stations in China and Pakistan
30 PalletowerLogistics equipment distributor Cheshire Dec 16 92.99% 5,684 19,584 50 Says it has Europe's largest supply of pallets and cages for rent
31 Crafter’s CompanionCraft products retailer County Durham Mar 17 92.47% *10,284 *19,120 117 The founder makes regular guest appearances on TV shopping channels in the US and Germany
32 Icon FilmsTV and film producer Bristol Mar 17 92.11% 9,103 11,015 80 Its television shows have millions of viewers in the US, Europe and Middle East
33 BiocladSpecialist cladding developer Harrogate Dec 16 91.71% *1,159 *5,810 16 Sells hygienic wall cladding across Australasia, the Americas and the Middle East
34 DigiflexOnline consumer goods retailer Essex Mar 17 91.16% *4,100 *7,667 44 Has Amazon Marketplace stores in seven countries
35 SaleCycleMarketing technology developer Tyne and Wear Mar 17 88.26% 6,034 12,003 159 Has converted more than 500m abandoned transactions into sales for 600 international brands
36 PrivateFlyPrivate jet hire platform St Albans May 17 83.52% *15,308 *22,217 31 Acquired a private aviation firm last November as part of its US expansion plans
37 Pet Food UKPet food manufacturer Hemel Hempstead Dec 16 80.27% †3,640 †10,254 25 Sells its Barking Heads, Meowing Heads and AATU brands in Russia and the Far East
38 PC Richardson & CoCivil and structural engineer North Yorkshire Mar 17 79.76% 3,862 7,241 69 Has a five-year maintenance contract for Qatar’s tallest skyscraper, the Aspire Tower
39 Flint InternationalIT infrastructure consultancy Watford Dec 16 77.48% 9,607 20,162 33 Has 10 overseas offices, including an outpost in Botswana
40 Slush Puppie UKFrozen drinks distributor High Wycombe Dec 16 77.37% 3,995 18,193 94 Says it has sold 175bn cups of its syrup and crushed ice drinks in Europe since 1974
41 Chess DynamicsDefence systems engineer West Sussex Apr 17 76.34% 8,551 16,536 98 Its Sea Eagle surveillance systems are in service on the aircraft carrier HMS Queen Elizabeth
42 Baker Ross GroupCraft products retailer Essex Dec 16 75.97% 5,770 22,465 86 Sells more than 3,000 craft products via 10 websites
43 TouchNetixTouchscreen developer Hampshire Dec 17 73.88% *4,845 *5,231 11 Has sold more than 500,000 touchscreens in countries such as Germany, Sweden and Austria
44 HolovisSensory experience developer Leicestershire Jan 17 71.56% 11,111 14,560 105 Last year it designed a 3D hovercraft ride for a Hunger Games-themed attraction in Dubai
45 Superyacht Tenders And ToysYacht equipment supplier Ipswich Oct 17 68.59% *5,400 *5,500 10 Supplies toys such as slides to superyachts made in Germany and Holland
46 BondsSteel castings manufacturer County Durham Sep 17 66.90% *12,092 *22,211 300 Bought a 22-acre factory in Scunthorpe in 2016, expanding its manufacturing capabilities
47 First Position GroupDancewear retailer Devon Aug 17 63.90% *4,508 *15,416 75 Sells its leotards and ballet skirts to customers in 69 countries worldwide
48 LPW TechnologyMetal powder manufacturer Cheshire Dec 16 63.86% †7,668 †10,406 82 Partners in 13 countries distribute its metal powders for 3D printing
49 Virtual ClarityIT consultancy Central London Dec 16 62.89% 19,145 23,303 61 Last March Virginia-based DXC Technology took a minority stake in the firm for an undisclosed sum
50 Nosy CrowChildren's book publisher Central London Dec 16 59.16% *4,861 *9,003 27 Publishes children’s books in 39 languages
51 Anthesis GroupSustainability consultancy Central London Dec 16 58.96% 6,486 9,118 158 Helps US customers Target and The North Face improve supply chain sustainability
52 Red ArchAutomotive component supplier Northamptonshire Jul 17 58.25% *8,903 *9,651 64 Says it made 70% of all exhausts for BMW’s M-series range
53 BryterMarket researcher Central London Sep 17 58.11% *5,049 *6,473 20 Plans to open an office in Singapore to service the growing Asian market
54 Pet BrandsPet accessory manufacturer West Yorkshire Jan 17 57.92% *6,268 *15,900 44 Has a portfolio of own-label brands that are sold to retailers in more than 50 countries
55 KiddyliciousChildren's snack manufacturer Buckinghamshire Dec 17 56.88% *3,148 *16,022 25 Is launching in Central America, including El Salvador and Nicaragua, next month
56 SandbagMusic merchandise distributor Reading Mar 17 56.39% 13,861 19,512 59 Is expanding in the US, having opened a base in Los Angeles in 2011
57 Nlyte SoftwareSoftware developer Central London Dec 16 55.87% 21,016 22,160 114 In 2016 it bought New Jersey-based software developer FieldView for an undisclosed sum
58 Wester Ross FisheriesSalmon farmer Scottish Highlands Dec 16 55.67% 8,876 14,277 55 Produces sashimi-quality salmon in Scotland and exports it to Japan, the US and the Middle East
59 The Pearce GroupRecycling services provider St Albans Mar 17 55.18% 6,652 14,974 123 Its eco-friendly animal bedding is used by racehorse owners overseas
60 Carpenter & PatersonPipe suspension equipment manufacturer Powys Dec 16 54.89% 21,781 23,141 341 Exports pipe support equipment to 34 countries worldwide including Nigeria and Brunei
61 Silverlining FurnitureBespoke furniture manufacturer Wrexham Jul 17 54.87% *5,364 *6,105 57 Plans to start installing its furniture in private jets of the rich and famous
62 Net World SportsOnline sports goods retailer Wrexham Sep 17 54.35% *11,334 *18,230 87 Plans to make customer service available 24/7 to help its clients in different time zones
63 Forensic Risk AllianceForensic accounting consultancy Central London Dec 16 53.35% 13,614 17,070 36 Has offices in America and Europe, which serve clients such as Rolls-Royce
64 Charlie BearsTeddy bear wholesaler Cornwall Jun 16 52.33% *2,867 *8,572 29 Produces 500,000 teddy bears a year that are sold in 37 countries
65 ChelsomLighting manufacturer Blackpool Dec 16 52.13% 5,005 11,437 60 Supplies lamps, lighting and chandeliers to hotels and cruise liners in 70 countries
66 RarewavesMusic & electronics retailer West London Aug 17 51.14% *14,668 *17,693 19 Has sold to more than 9m music and video lovers since it launched in 2005
67 PMD GroupMaterial surfacing specialist Coventry Dec 16 51.05% 1,937 9,361 109 Has a subsidiary in India and distributors as far afield as Vietnam and Thailand
68 PortSwigger Web SecurityCyber-security software developer Cheshire Oct 17 50.62% *7,380 *8,133 27 Started by a professional hacker and now sells security testing software in 120 countries
69 ForegenixCyber-security consultancy Wiltshire Sep 17 49.39% *5,151 *7,153 94 Has offices in the US, Germany, Australia, South Africa and Uruguay
70 Search LaboratoryOnline marketing agency Leeds Oct 17 47.64% 4,477 10,958 132 Its multilingual staff run search engine marketing campaigns for clients in more than 18 countries
71 Denny Bros GroupPrinting services provider Bury St Edmunds Dec 16 46.40% 1,629 7,537 88 Sells print machinery to companies in countries including Australia and Malaysia
72 B2B InternationalMarket researcher Central London Dec 16 46.14% 5,399 8,625 156 Last year it relocated its Beijing office and expanded its team there to 30 researchers
73 Hanson WadeConference provider Central London Dec 17 45.92% *15,236 *16,383 106 Its conferences and events in three continents were attended by 5,000 people last year
74 Green Light PackagingBiodegradable packaging manufacturer Cardiff Dec 16 45.87% *3,106 *6,110 20 Its website is available in 12 languages
75 FentimansDrinks manufacturer Northumberland Dec 16 45.80% 8,065 24,141 47 US taste for pink grapefruit is helping drive overseas sales
76 Lineup SystemsAdvertising technology developer Central London Jun 17 45.67% *6,763 *8,561 90 Plans to double its operations in the US and Canada this year
77 VegwareCompostable packaging manufacturer Edinburgh Jan 17 44.39% 3,362 14,927 50 Has offices in the US, Australia and Hong Kong, and distributors in the Middle East and Caribbean
78 Hague Print MediaPrinting services provider West Yorkshire Dec 16 44.21% 4,538 18,024 73 Supplies 1bn alcohol duty stamps to Tanzania each year
79 M SquaredLaser technology developer Glasgow Feb 17 43.87% 11,784 13,295 90 Sales to the US, where it has two offices, account for more than half of turnover
80 Y International (UK)Grocery exporter Birmingham Jan 17 43.69% 23,629 23,629 185 Exports 500 sea freight containers and 4,000 air freight pallets of groceries every year
81 MetrasensMetal detection technology developer Malvern Oct 17 43.38% *9,270 *10,317 57 Exports to 44 countries include magnetic contraband detection systems
82 DotmaticsData management software developer Hertfordshire Dec 16 42.67% 9,956 12,820 84 Received backing from Scottish Equity Partners last year to strengthen its global operations
83 FreestyleXtremeSports goods retailer Bristol Jul 17 41.56% *8,560 *10,771 67 Last July it upgraded its warehouse to include an AI-enabled stock control system
84 Team17Video game developer West Yorkshire Dec 16 41.49% 11,507 13,458 89 Sells its titles worldwide through distributors such as Sony, Microsoft, Apple and Google
85 Abacus LightingExterior lighting manufacturer Mansfield Apr 17 41.10% 9,176 22,230 159 Its lights are in more than 40 airports globally
86 Cawston PressDrinks manufacturer Southeast London Dec 16 40.80% 1,866 9,678 14 Produces juices in Germany and Britain; its biggest export market is the US
87 Commodity CentreLogistics services provider Chelmsford Mar 17 40.78% 6,980 20,099 55 Delivers cereals, cocoa and coffee beans to factories and roasteries across Europe
88 Dints InternationalSupply chain services provider Central London May 17 40.45% *10,786 *10,895 12 Plans to win new mining customers in Chile and Tanzania this year
89 SanglierAdhesives manufacturer Nottinghamshire Apr 17 39.48% 5,241 14,280 52 Expanding its product range has boosted sales in Europe
90 SemafonePayment services developer Guildford Dec 16 39.22% 4,437 8,313 77 Its Cardprotect software is used by AO.com, Santander and Sky
91 Neg Earth LightsEntertainment lighting provider West London Mar 17 39.02% 6,155 15,043 74 Artists such as Adele, Muse and Phil Collins have used its entertainment lighting services
92 PuckatorGiftware wholesaler Cornwall Dec 16 38.99% 9,070 14,833 160 Has offices in Turin, Valencia and Xiamen, China
93 LTS InternationalSustainability consultancy Edinburgh Sep 16 38.81% 7,217 7,597 45 Has worked on sustainability and development projects in more than 100 countries
94 OcealaRecycling services provider Leicestershire Mar 17 38.67% 10,661 17,182 11 Sells recovered waste products including paper and plastic to countries such as China and India
95 Language ConnectTranslation services provider Central London Sep 17 38.38% *2,478 *8,334 75 Its network of 6,000 freelancers can translate more than 150 languages
96 IgnisDigital marketing agency Southwest London May 17 37.78% *3,558 *6,782 40 Helps customers including DHL, Marriott and Pernod Ricard expand internationally
97 LA Micro UKIT hardware distrubutor Windsor Apr 17 37.42% *13,648 *23,415 41 Has over 5,000 customers in 19 countries
98 CodexCinematography equipment developer Central London Dec 16 37.19% 2,811 9,380 30 The latest Star Wars movie, The Last Jedi, was created using its equipment
99 Kit for KidsChildren's products manufacturer Kent Feb 17 36.95% *2,494 *7,088 125 Its products are sold in over 30 countries
100 Brandon MedicalMedical equipment manufacturer Leeds Oct 16 36.05% 2,585 6,173 56 Sells medical equipment, including robotic arms, to hospitals around the world

* Supplied by company     † Annualised figure