| A to Z Cover Ltd | Chester | 2021 |
| A to Z Designs Limited | Crawley | 2000 |
| A to Z Finance 4U Ltd | Hounslow | 2013 |
| A to Z Financial Solutions (UK) Ltd | Warrington | 2006 |
| A to Z Group Holdings Ltd | Royston | 2025 |
| A to Z Group of Companies Ltd | Nottingham | 2019 |
| A to Z Insurance Services Ltd | Llanelli | 2012 |
| A to Z Morrisseyco Ltd | Leamington Spa | 2022 |
| A to Z Mortgage Services Ltd | Wednesbury | 2022 |
| A to Z Properties Holdings Limited | London | 2019 |
| A Tovagliari Holdings Ltd | Totnes | 2026 |
| A Trader's Edge Ltd | Stoke-On-Trent | 2023 |
| A Train (Leeds) Ltd | Leeds | 2018 |
| A Transparent Financial Solution Limited | Chester | 2014 |
| A Transparent Group Ltd | Chester | 2015 |
| A Triggs Consultancy Limited | Crawley | 2023 |
| A Tyagi Holding Limited | Wednesbury | 2015 |
| A Usher Holdings Ltd | Durham | 2025 |
| A V Birch (Holdings) Limited | Bridgnorth | 2014 |
| A V Co 1 Limited | Windsor | 2006 |
| A V Commercial Finance Ltd | London | 2017 |
| A V Crutchley Holdings Limited | Ellesmere Port | 2022 |
| A V Finance Ltd | Darlington | 2020 |
| A Very Inc. Limited | Manchester | 2018 |
| A Vickers Ltd | Newcastle Upon Tyne | 2020 |
| A W E Group Limited | Stoke-On-Trent | 2016 |
| A W Enforcement Limited | Leeds | 2019 |
| A W Financial Services Limited | Stokesley | 2003 |
| A W Fyson Limited | Nottingham | 2011 |
| A W I G Limited | Leatherhead | 2021 |
| A W J Asset Management Ltd | Pontcanna | 2018 |
| A W Mellor Ltd | York | 2025 |
| A W Page & Co (Holdings) Limited | Sleaford | 2022 |
| A W Parry Lifts Holdings Ltd | Wells | 2024 |
| A W S F Holdings Ltd | Cannock | 2025 |
| A W S Financial Services Limited | Dartford | 2015 |
| A W Squier Holdco Limited | Canewdon | 2014 |
| A W Tools Ltd | Redditch | 2023 |
| A W Walker Holdings Limited | Evesham | 2005 |
| A Warman Limited | Bedford | 2019 |
| A Watts Holdings Ltd | Upton Snodsbury | 2026 |
| A Way With Property Limited | Worcester | 2024 |
| A Wells & Co Holdings Ltd | Pontypool | 2025 |
| A West Holdings Limited | Liverpool | 2026 |
| A Wilderness Way Holdings Limited | Penrith | 2016 |
| A Williams Investments Holdings Ltd | Glasgow | 2025 |
| A Williamson Haulage Holdings Limited | Edinburgh | 2018 |
| A Wilson Investments Limited | Chelmsford | 2009 |
| A Wonderful Property Limited | Manchester | 2026 |
| A Woods Holdings Limited | Leigh | 2025 |
| A Woolford & Associates Ltd | Sutton Coldfield | 2017 |
| A Wright Financial Solutions Limited | Billericay | 2018 |
| A Wright Holdings Ltd | Ellesmere Port | 2025 |
| A Wright Investment Ltd | Tamworth | 2024 |
| A X Group Holdings Ltd | Coventry | 2023 |
| A Yonge Consulting Ltd | Castle Douglas | 2023 |
| A&1 Holdings Limited | London | 2021 |
| A&A Capital Holdings Ltd | London | 2023 |
| A&A Concrete Holdings Limited | Plymouth | 2025 |
| A&A Farming Ltd | Sheffield | 2026 |
| A&A Fortis Group Ltd | Sunderland | 2025 |
| A&A Holdings (Midlands) Limited | Lichfield | 2025 |
| A&A Investment Group Ltd | Maidstone | 2021 |
| A&A Murphy Limited | Ipswich | 2025 |
| A&A NE Enterprises Ltd | Alnwick | 2026 |
| A&A Partnership Ltd | Peterborough | 2017 |
| A&A Pro Smile Ltd | Broadstone | 2025 |
| A&A Protect Limited | Leicester | 2025 |
| A&A R Holdings Ltd | London | 2025 |
| A&A RAI Investments Limited | Mildenhall | 2025 |
| A&A Shutters Ltd | Middlesbrough | 2017 |
| A&A Turnbull Farming | Penrith | 2025 |
| A&A Walshaw Ltd | Wakefield | 2015 |
| A&B Brothers Edin Limited | Edinburgh | 2024 |
| A&B Capital Ltd | St. Neots | 2024 |
| A&B Engineering (ESD) Limited | Liverpool | 2023 |
| A&B Hogan Insolvency Limited | Coventry | 2017 |
| A&B Homes Holdings Limited | Alresford | 2015 |
| A&B Richards Limited | Haverfordwest | 2026 |
| A&C Accounting Ltd | Coventry | 2020 |
| A&C Green Ventures Limited | Oakham | 2025 |
| A&C Holdings (North East) Limited | North Shields | 2025 |
| A&C Investments Midlands Limited | Bilston | 2016 |
| A&C Kids Ltd | London | 2022 |
| A&D Wealth Limited | London | 2024 |
| A&E Group Investments Ltd | Dover | 2025 |
| A&E Group Ltd | Dover | 2025 |
| A&E Hancock Investments Ltd | Stoke-On-Trent | 2025 |
| A&E Holdings (Southsea) Limited | Portsmouth | 2021 |
| A&E Johnston Holdings Ltd | Edinburgh | 2020 |
| A&E Wealth Solutions Limited | Pinner | 2016 |
| A&F Capital Advisors Ltd | London | 2020 |
| A&F Capital Group Ltd | London | 2017 |
| A&F Management Limited | London | 2020 |
| A&F NI Holdings Ltd | Strabane | 2021 |
| A&G Care Holdings Limited | Banstead | 2025 |
| A&G Financial Services Ltd | Glasgow | 2017 |
| A&G Holdings South Ltd | Bournemouth | 2020 |
| A&G Marshall Group Limited | Plymouth | 2019 |
| A&G Mortgage Advisors Limited | Canvey Island | 2023 |