| A Star Valeting Ltd | Northwich | 2025 |
| A Star Valets Ltd | Liverpool | 2023 |
| A Star Window Cleaners Ltd | Mansfield | 2025 |
| A Star Window Cleaning Limited | Crewe | 2022 |
| A Star Window Cleaning Services Limited | Leyland | 2022 |
| A Starr Ltd | Ringwood | 2024 |
| A Stars Rentals Ltd | Congleton | 2016 |
| A Stellar Future Limited | Droitwich | 2020 |
| A Sterling Landscapes Ltd | Southsea | 2026 |
| A Stewart and Daughters Limited | London | 2020 |
| A Stone's Throw Event Co Limited | Portsmouth | 2014 |
| A Stronger Britain Ltd | London | 2025 |
| A Stubbs Limited | Aberdare | 2007 |
| A Supreme Clean Ltd | London | 2017 |
| A Sure Clean Limited | Peterborough | 2015 |
| A T & K Logistics Ltd | Wisbech | 2023 |
| A T & P Holdings (2022) Ltd | Guisborough | 2022 |
| A T & P Holdings Ltd | Guisborough | 2021 |
| A T & T GB Group Limited | Brentford | 2018 |
| A T a C Europe Limited | Luton | 2007 |
| A T Communications Limited | Tamworth | 1999 |
| A T Craig Investments Ltd | Stoke-On-Trent | 2001 |
| A T Hill Limited | Doncaster | 2003 |
| A T Leisure Limited | Houghton Le Spring | 1999 |
| A T Pierce Services Ltd | Frome | 2018 |
| A T Plant Hire (Yorkshire) Limited | Brough | 2025 |
| A T Professional Facilities Services Ltd | Southampton | 2023 |
| A T Property Consulting Ltd | Ayr | 2016 |
| A T Software Limited | Milton Keynes | 1997 |
| A T Suny Service Ltd | London | 2017 |
| A T Watson and Co Ltd | Manchester | 2024 |
| A T.I.M.E. Limited | London | 2008 |
| A Tang Limited | Banff | 2003 |
| A Targeted Approach Limited | Stamford | 2018 |
| A Taste of Texas Fest Limited | London | 2026 |
| A Taste of Twickenham CIC | Twickenham | 2023 |
| A Taylor Commercial Ltd | Red Marley | 2023 |
| A Team Car Wash Ltd | Bedford | 2025 |
| A Team Cleaning Group Ltd | Northampton | 2025 |
| A Team Occasion Ltd | London | 2015 |
| A Temp to Suit Ltd | Poole | 2009 |
| A Tent With a View Limited | Kirkby Stephen | 2015 |
| A Thom Ltd | Cardiff | 2019 |
| A Thomas Finance Limited | Leicester | 2018 |
| A Thomas Window Cleaning Limited | Bournemouth | 2025 |
| A Tidy Space Limited | Braintree | 2020 |
| A to B Cars (Luton) Limited | Luton | 2011 |
| A to B Landscape Ltd | Nottingham | 2026 |
| A to B Recruitment Limited | Tring | 2016 |
| A to Z Business Solutions Limited | Chesterfield | 2019 |
| A to Z Clothing Co Ltd | Harrow | 2018 |
| A to Z Commercial Property Services Limited | Alcester | 2020 |
| A to Z Consult Limited | London | 2012 |
| A to Z Exports Limited | West Midlands | 2004 |
| A to Z Garden Services Ltd | Peasmarsh | 2019 |
| A to Z Gardening Landscaping Services Ltd | St. Albans | 2015 |
| A to Z General Services Ltd | Portsmouth | 2012 |
| A to Z Home Improvement Ltd | Harrow | 2021 |
| A to Z Interpreting & Translation Services Limited | Birmingham | 2008 |
| A to Z Labour Agency (Helsby) Limited | Cheshire | 1989 |
| A to Z Management Services Ltd | Rochester | 2018 |
| A to Z Packing Limited | High Wycombe | 2017 |
| A to Z Property Managment-M&D Ltd | London | 2024 |
| A to Z Rail Ltd | Brentford | 2016 |
| A to Z Recruitment Personnel Ltd | Ilford | 2019 |
| A to Z Safe Warehouse Ltd | Benfleet | 2004 |
| A to Z Talent Solutions Ltd | Tewkesbury | 2024 |
| A to Z Valeting Ltd | Manchester | 2022 |
| A to Z Warehousing Limited | London | 2006 |
| A to ZEB Solutions Limited | Bradford | 2017 |
| A to ZEE Cars Limited | Southall | 2021 |
| A Total Clean Limited | Glasgow | 2019 |
| A Total Office Kleaning (London) Limited | London | 1998 |
| A Touch of Angel's Cleaning Limited | Harrow | 2016 |
| A Touch of Class Valeting & Car Wash Limited | Ilford | 2015 |
| A Touch of Eden Ltd | Lichfield | 2025 |
| A Touch of Grass Limited | Dunstable | 2019 |
| A Touch of Green (Staffs) Ltd | Newcastle-Under-Lyme | 2025 |
| A Touch of Sparkle Ltd | Cardiff | 2023 |
| A Touch of Weddings & Events Ltd | Leeds | 2023 |
| A Training Company Ltd | Birmingham | 2011 |
| A Travel Agency London Office Limited | Hounslow | 2021 |
| A Travels Ltd | Burton-On-Trent | 2023 |
| A Tribe Called Progress Ltd | London | 2019 |
| A Trillion Games Limited | Kingston Upon Thames | 2012 |
| A Turner Ltd | West Molesey | 2020 |
| A U Property Maintenance Ltd | Bradford | 2022 |
| A U Recruitment Limited | Grays | 2023 |
| A Universal Rent a Car Company Ltd | Banstead | 2025 |
| A V & C Limited | Birstall | 2003 |
| A V 8 Technical Limited | Huntingdon | 2008 |
| A V Bodies Limited | Manchester | 2014 |
| A V C Security Ltd. | Llandudno | 2021 |
| A V C Shinebright Ltd | Sturminster Newton | 2004 |
| A V Mcdonald Limited | London | 2011 |
| A V P Recycling Limited | Bedwas | 1982 |
| A V S Energy Services Limited | Glasgow | 2014 |
| A V Security Limited | Weybridge | 2019 |
| A Valeting Centre Ltd | Luton | 2026 |
| A Vehicle Hire Ltd | London | 2026 |