| A Big O Coffee Ltd | Newport Pagnell | 2019 |
| A Biggar Picture Ltd | Holmfirth | 2025 |
| A Bike Thing Ltd | Swadlincote | 2020 |
| A Bingham Limited | Chesterfield | 2025 |
| A BIT Crafty Ltd | Weston-Super-Mare | 2023 |
| A BIT of a Treat Ltd | Gateshead | 2019 |
| A BIT of Colour Ltd | Poole | 2020 |
| A BIT of What YOU Fancy Limited | Tamworth | 2013 |
| A BIT of What YOU Like Ltd | Brighton | 2025 |
| A Bite Ltd | Leeds | 2022 |
| A Black and White Story Ltd | London | 2020 |
| A Black Store Ltd | Evesham | 2025 |
| A Bland Butchers Ltd | Doncaster | 2025 |
| A Blue Feather Ltd | Longfield | 2022 |
| A Blue Limited | Rostrevor | 2000 |
| A Book Co. Limited | Bradford | 2025 |
| A Book for U Ltd | Preston | 2013 |
| A Bourne & SON Ltd | Birmingham | 2006 |
| A BOW on Top Gift Shop Ltd | Banbury | 2023 |
| A Brands Koncepts Limited | London | 2026 |
| A Braver YOU Limited | Bury St. Edmunds | 2024 |
| A Breaking Parts Company Ltd | Wednesbury | 2026 |
| A Bridal Story Ltd | St. Helens | 2019 |
| A Bridie Limited | Liverpool | 2026 |
| A Brighter Market Limited | Bournemouth | 2017 |
| A Bromberg (Exporters) Limited | London | 1954 |
| A Bros Halal Meat (London) Limited | London | 2024 |
| A Brown & Co. (Mitcham) Limited | London | 1992 |
| A Brunt Butchers Limited | Pontypridd | 2006 |
| A Buchan (Retailers) Limited | Aberdeen | 2017 |
| A Buckland & Sons Ltd | Buckingham | 2012 |
| A Bunch of Old Books Ltd | Bromham | 2025 |
| A Burgess Ltd | Stone | 2009 |
| A Burrows Carpets Ltd | Barrow In Furness | 2013 |
| A by Aqsa Amjad Ltd | Staines-Upon-Thames | 2024 |
| A by Iram Ltd | South Croydon | 2024 |
| A C & K L Twell Ltd | Lincoln | 2008 |
| A C a Distribution Limited | Surrey | 1996 |
| A C Allan Limited | Nottingham | 2005 |
| A C Cars Halifax Limited | Halifax | 2021 |
| A C Collectz Limited | High Wycombe | 2026 |
| A C Coughtrey & SON Limited | Fareham | 2014 |
| A C Currie Limited | Troon | 2001 |
| A C Davies Limited | Milford Haven | 2005 |
| A C Electrical Supplies Limited | Chorley | 2014 |
| A C F (Truck Parts) Ltd | Stanmore | 2010 |
| A C F Flooring Limited | County Durham | 2007 |
| A C Firearms Ltd | Lancaster | 2019 |
| A C G Auto Repairs Limited | Cheltenham | 2013 |
| A C Georgiades Ltd | Potters Bar | 1998 |
| A C Golf Studio Ltd | Bude | 2024 |
| A C H Construction Limited | Middlesex | 2007 |
| A C Jenner Holdings Limited | Birmingham | 2013 |
| A C L S Contracts Limited | Braintree | 2008 |
| A C Leigh (Norwich) Limited | | 1993 |
| A C M Motorsport Limited | Luton | 2025 |
| A C Mackie Ltd | Glasgow | 2018 |
| A C Marine Aggregates Ltd | Rotherham | 2015 |
| A C Meats Ltd | Antrim | 2015 |
| A C Mechanical Repairs Limited | Southampton | 2020 |
| A C Motor Services Limited | Lymington | 2006 |
| A C Motors (Colchester) Limited | Colchester | 2011 |
| A C Motors Service & Repair Centre Ltd | Fareham | 2011 |
| A C Mutimer Ltd | Woodbridge | 2003 |
| A C Nwosu UK Ltd | Birmingham | 2016 |
| A C P & D Limited | Ashton-Under-Lyne | 1996 |
| A C Paintless Dent Removal Ltd | Middlesbrough | 2011 |
| A C Plant Glazing Limited | Manchester | 2002 |
| A C Premier Foods UK Ltd | Watlington | 2019 |
| A C R Car Services Ltd | Ipswich | 2016 |
| A C Silver Unlimited | Newcastle Upon Tyne | 2015 |
| A C Sissling Limited | Bradford | 1998 |
| A C Smith Metals Ltd | Leeds | 2023 |
| A C Steel Services Limited | Derby | 1998 |
| A C T Motor Repairs Ltd | Watford | 2019 |
| A C Tek-Sol Ltd | Holyhead | 2017 |
| A C Valves & Controls Limited | Coalville | 1997 |
| A C Vehicle Repairs Ltd | Bodmin | 2022 |
| A C67 Ltd | Bolton | 2025 |
| A Cameron Distribution Ltd | Huntingdon | 2023 |
| A Campbell Ltd | Smethwick | 2018 |
| A Cancao DE Lisboa Limited | Norwich | 2015 |
| A Capital Tyres Limited | Harrow | 2020 |
| A Car 4U & Commercial Hull Ltd | Hull | 2019 |
| A Car 4U Hull Ltd | Hull | 2017 |
| A Car 4U Limited | Hartlepool | 2019 |
| A Car Care Centre Limited | Nuneaton | 2012 |
| A Car Care Centre Solutions Ltd | Hornsea | 2021 |
| A Card KO Ltd | London | 2025 |
| A Caring Hand Limited | Witney | 2020 |
| A Carruthers Limited | Lockerbie | 2016 |
| A Cars Bros Ltd | Glasgow | 2023 |
| A Cars Limited | Reading | 2026 |
| A Cass Limited | Sheffield | 2007 |
| A Catered Affair Limited | Chester | 1999 |
| A Character Shop Ltd | Frinton-On-Sea | 2012 |
| A Cheeky Taste of Heaven Ltd | Huddersfield | 2025 |
| A Child's Boutique Limited | Abergavenny | 2013 |
| A Chowdhery Ltd | Leicester | 2022 |
| A Chronus UK Ltd | Rickmansworth | 2015 |