| A & T Ventures Limited | Sudbury | 2008 |
| A & U Services London Ltd | London | 2016 |
| A & U UK Limited | Dagenham | 2013 |
| A & W Jigboring Ltd | Redditch | 2001 |
| A & W Tool Hire Limited | Skipton | 1984 |
| A & W Tree Services Ltd | Kendal | 2025 |
| A & Z Bros Limited | Rochdale | 2026 |
| A & Z Cars Ltd | Wembley | 2015 |
| A & Z Technical Services Limited | Manchester | 2023 |
| A &T Total Clean Limited | Airdrie | 2025 |
| A - Door Solutions Limited | Taunton | 2010 |
| A - Team Security Ltd | Cardiff | 2010 |
| A - Z Design Solutions Limited | Lincoln | 2014 |
| A - Z Fire & Security Ltd | London | 2023 |
| A . T Storage Ltd | Chichester | 2021 |
| A 101 Solutions (UK) Ltd | Neath | 2013 |
| A 2 B Self Drive Limited | Horsham | 1998 |
| A 2 B Wills and Legal Services Limited | Manchester | 2017 |
| A 2 Clean Limited | Preston | 2011 |
| A 2 Z Cleaning Services Commercial UK Limited | Redditch | 2016 |
| A 2 Z-LIMOS4U Limited | West Midlands | 2001 |
| A 24 Healthcare Ltd | Wolverhampton | 2015 |
| A a Beddings Limited | Romford | 2025 |
| A a Express Travel Ltd | Bolton | 2018 |
| A a Gillespie (Residential) Ltd | Cheltenham | 2025 |
| A a Gillespie Limited | Cheltenham | 2007 |
| A a Installation Services Limited | Bolton | 2007 |
| A a J R Solutions Limited | Manchester | 2019 |
| A a Marquees Limited | Ringwood | 2002 |
| A a N Consulting Limited | Cardiff | 2016 |
| A a Salt Services Limited | Worcester | 2002 |
| A a Signals Limited | Harrow | 2010 |
| A a Stewart Ltd | Dingwall | 2015 |
| A a Track IT Limited | Stockport | 2019 |
| A a Travel (Bradford) Limited | Bradford | 2010 |
| A AA Mitchell Limited | Bedford | 2025 |
| A Advisors Ltd | London | 2017 |
| A Amplitur Agencia DE Viagens E Turismo Ltd | Manchester | 2021 |
| A and a Investment Projects Ltd | Nelson | 2017 |
| A and a Utilities Ltd | Leeds | 2022 |
| A and B Quality Care Ltd | Kington | 2017 |
| A and Brothers Ltd | Pinner | 2023 |
| A and C Gray Holdings Ltd | Liverpool | 2010 |
| A and C Inflatables Ltd | Dudley | 2022 |
| A and D Cleaners (Gelligaer) Limited | Gelligaer | 2020 |
| A and G London Ltd | London | 2019 |
| A and G Retrofit Consultancy Limited | Kettering | 2022 |
| A and H Dick Plant Ltd | Kilmarnock | 2024 |
| A and J Garden Services Limited | Bury St. Edmunds | 2012 |
| A and J Premier Roofing Ltd | Sidcup | 2017 |
| A and J Window Cleaning Limited | Bournemouth | 2024 |
| A and L Ever Ready Cleaning and Building Maintenance Services Ltd | Rainham | 2012 |
| A and L Theatre Company Ltd | Bargoed | 2025 |
| A and M Carpentry and Construction Limited | Milton Keynes | 2014 |
| A and M Explore Limited | London | 2023 |
| A and M Security Service Ltd | Stanmore | 2025 |
| A and M Tailoring Ltd | Ruislip | 2017 |
| A and R Rothen Limited | Atherstone | 2009 |
| A and S Blair Limited | Edinburgh | 2016 |
| A and Z Support Services Limited | Sheffield | 2024 |
| A Anderson Design Ltd | Prestwick | 2006 |
| A Approved Cleaning Services Ltd | Caerphilly | 2017 |
| A Apps Consulting Limited | Tonbridge | 2015 |
| A Armstrong Services Ltd | Bournemouth | 2023 |
| A Atwell T/A Tradesx Ltd | Stockport | 2020 |
| A B Adcock Landscaping Ltd | Leicester | 2016 |
| A B Amenity Ltd | Musselburgh | 2014 |
| A B Brown Limited | Edinburgh | 2020 |
| A B C Cleaning Services (Midlands) Ltd | Derby | 2022 |
| A B C Consultancy Ltd | Canterbury | 2009 |
| A B C Pest Response Ltd | Bradford | 2024 |
| A B Car Rentals Limited | London | 2019 |
| A B Construction (South Yorkshire) Ltd | Scunthorpe | 2017 |
| A B Consultants (NE) Limited | Hebburn | 2015 |
| A B Creative Limited | Chertsey | 2010 |
| A B Driveways Limited | Leeds | 2026 |
| A B Electronics (STY) Limited | Isle Of Lewis | 2006 |
| A B Equestrian, Fencing & Groundworks Limited | Kings Lynn | 2014 |
| A B Freight Ltd | Clayton Le Moors | 2009 |
| A B Lawncare Ltd | Loughborough | 2013 |
| A B Mowing Ltd | Dunoon | 2024 |
| A B Munro Technical Services Limited | Prestwick | 2006 |
| A B Pallet Solutions Ltd | Harlow | 2015 |
| A B Plant & Equipment Hire Ltd | Torquay | 2025 |
| A B Plant & Transport Ltd | Halesowen | 2016 |
| A B Promotions Kent Ltd | Maidstone | 2012 |
| A B R Contracting Services Ltd | Deeside | 2025 |
| A B R Davidson Limited | Cirencester | 2009 |
| A B R Stainless Limited | Manchester | 2017 |
| A B S Construction (Northeast) Ltd. | Yarm | 2019 |
| A B Spray Finishings Ltd | Portsmouth | 2018 |
| A B Supplies Limited | Wilmslow | 1995 |
| A B Telemarketing Ltd | Sheerness | 2011 |
| A B Travel Management Limited | Rayleigh | 2011 |
| A B Tyres Ltd | Bolton | 2011 |
| A B Vans Limited | Carmarthen | 2014 |
| A B W Cleaning Services Limited | London | 2022 |
| A Baraku Gardens Ltd | London | 2022 |
| A Barker Tree & Landscaping Specialists Ltd | Leicester | 2025 |
| A Barnes Limited | Ashford | 2017 |