| A & S Contracts Ltd | Sudbury | 2019 |
| A & S Enterprises (Holdings) Limited | Burton On Trent | 2015 |
| A & S Jackson Holdings Ltd | London | 2026 |
| A & S Keal Limited | Knaresborough | 2019 |
| A & S Management Services Ltd | Frome Road | 2005 |
| A & S Soong Limited | London | 2026 |
| A & S Wishart Ltd | London | 2024 |
| A & S Yorkshire Estate Ltd | Halifax | 2024 |
| A & T Business Associates Limited | Worthing | 2008 |
| A & T Property Investments Limited | Liverpool | 2012 |
| A & T Services Holdings Limited | St Austell | 2021 |
| A & V Services Limited | Shifnal | 1984 |
| A & V Squires Holdings Limited | Southwell | 2020 |
| A & Z Rokad Limited | Bolton | 2012 |
| A & ZH Transport Limited | New Milton | 2025 |
| A 1 Guarantee Limited | Coventry | 1969 |
| A 2 C Holdings Limited | Portsmouth | 2007 |
| A 2 Z Compensation Ltd | Nelson | 2018 |
| A 20 (Charing) Limited | Ashford | 2024 |
| A a B Estates Limited | Dagenham | 2016 |
| A a Security Consultants Limited | Iver | 2021 |
| A a Wilkie Ltd | Kirriemuir | 2025 |
| A Acklam (Consulting) Ltd | Lincoln | 2015 |
| A ALI Property Capital Ltd | London | 2026 |
| A and C Capital Ltd | London | 2025 |
| A and D Associates Ltd | High Wycombe | 2020 |
| A and D Benawra Holdings Limited | London | 2026 |
| A and E Corporate Member Limited | London | 2014 |
| A and E Property Holdings Ltd | Liverpool | 2019 |
| A and J Berrys Holdings Ltd | Sherborne St. John | 2023 |
| A and J Property Investments Limited | Stockport | 2023 |
| A and M Business Investor Services Ltd | Northallerton | 2013 |
| A and M Heirs Holding Ltd | London | 2025 |
| A and O GC Ltd | Steyning | 2025 |
| A and R Mortgage & Protection Specialists Ltd | Middlesbrough | 2024 |
| A Anderson Holdings Ltd | Chelmsford | 2018 |
| A Aswani Holding Limited | Iver | 2026 |
| A B C Intelligence Limited | Ayr | 2013 |
| A B Conveyors (Holdings) Limited | Newark | 2024 |
| A B Curtis Investments Ltd | Barry | 2025 |
| A B DEV Group Limited | Wimborne | 2022 |
| A B R Jenkinson Limited | Bedford | 2015 |
| A B Risk Support Limited | West Malling | 2019 |
| A B Robinson Limited | Derby | 2010 |
| A B S Financial Limited | Hartlepool | 2023 |
| A B Supplies Holdings Limited | Wilmslow | 2020 |
| A B W Matters Limited | London | 2014 |
| A Beattie Holdings Ltd | Liverpool | 2024 |
| A Beautiful Company Ltd | London | 2022 |
| A Beer Consulting Ltd | Stoke-On-Trent | 2012 |
| A Bell Holdings Limited | Northamptonshire | 2005 |
| A Bevins Holdings Limited | Solihull | 2022 |
| A Bhaloda Holdings Ltd | Bolton | 2025 |
| A Bhatia Holding Limited | Birmingham | 2026 |
| A Bhayat Holdings Limited | Preston | 2016 |
| A Bigger Picture Global Limited | Kingston Upon Thames | 2021 |
| A Bloom Financial Services Ltd | Tewkesbury | 2022 |
| A Blue Cedar Ltd | Egham | 2025 |
| A Bowles Ltd | Norwich | 2018 |
| A Brand Holdings Co Ltd | Wantage | 2012 |
| A Brave New Sound Limited | Thames Ditton | 2020 |
| A Bright Care Ltd | London | 2018 |
| A Brighter Tomorrow Limited | London | 2020 |
| A Brown Mortgage Services Limited | Southend-On-Sea | 2016 |
| A Browne Financial Services Limited | Purley | 2025 |
| A Burgess Financial Services Ltd | Winsford | 2022 |
| A C & J Financial Services Ltd | Cardiff | 2016 |
| A C Cossor & SON (Holdings) Limited | Buntingford | 2018 |
| A C Financial Ltd | Northampton | 1999 |
| A C G Renovations Limited | Brighton | 2014 |
| A C Group Holdings Limited | Dukinfield | 2025 |
| A C Hulme and Sons Farming Limited | Canterbury | 2019 |
| A C Mortgages Yorkshire Ltd | Skipton | 2025 |
| A C Pope Holdings Limited | London | 2021 |
| A C Properties & Investments Ltd | London | 2025 |
| A C Scaffolding Holding Limited | Walsall | 2024 |
| A C Smith Holdings Limited | Waterlooville | 2004 |
| A C Stallard & Associates Ltd | Truro | 2018 |
| A C Stephenson FS Ltd | Norwich | 2021 |
| A Capital Group Ltd | London | 2023 |
| A Chandler Trading Limited | Berkshire | 2025 |
| A Cheeky Little Holding Company Ltd | London | 2024 |
| A Chowdhury Holding Ltd | London | 2021 |
| A Claims Management Ltd | Manchester | 2010 |
| A Class Group UK Ltd | London | 2026 |
| A Class Insurance Solutions Limited | Ramsgate | 2010 |
| A Class Investments Ltd | Leicester | 2026 |
| A Connection Limited | Tipton | 2019 |
| A Connolly Holdings Limited | Wigan | 2012 |
| A Cowley Holdings Ltd | Worksop | 2021 |
| A Cressey Limited | Ongar | 2023 |
| A Crosby Holdings Ltd | Carnoustie | 2025 |
| A Cunningham Holdings Limited | St. Albans | 2023 |
| A D Asset Management Ltd | Dinas Powys | 2018 |
| A D Booth & Sons Holdings Limited | Stoke On Trent | 2025 |
| A D Booth Group Limited | Newcastle Under Lyme | 2026 |
| A D Booth Investments Limited | Stoke On Trent | 2025 |
| A D Cleaver Holdings Limited | Bristol | 2026 |
| A D Delariquco Ltd | London | 2026 |
| A D Ladwa Capital Ltd | Wembley | 2026 |