| A D Plant Hire Holdings Limited | Middlesbrough | 2020 |
| A D Shah Financial Limited | Harrow | 2007 |
| A D Williams Holdings Limited | Callington | 2020 |
| A D Woodley Holdings 2021 Limited | Tewkesbury | 2021 |
| A D Wright Ltd | Brighton | 2012 |
| A Dainty Holdings Ltd | Sheffield | 2026 |
| A Davidson Financial Limited | Dundee | 2022 |
| A Davies Holdings Ltd | Ossett | 2021 |
| A Davies Laboratories Holdings Limited | Tunbridge Wells | 2024 |
| A Davis Holdings Limited | Birmingham | 2019 |
| A DE Simone Investments Ltd | Cambridge | 2013 |
| A DI Maria & Sons Holdings Limited | Coventry | 2026 |
| A Dubey Ltd | London | 2024 |
| A E Barker Limited | Norwich | 2012 |
| A E C Group Ltd | Folkestone | 2015 |
| A E Payne Limited | Ashby-De-La-Zouch | 2010 |
| A E R (Holdings) Limited | London | 2013 |
| A E Stuart Limited | Exeter | 2020 |
| A E Stuart NO2 Limited | Exeter | 2014 |
| A E Thomson (Norfolk) Limited | King'S Lynn | 2021 |
| A E Thomson (UK) Limited | King'S Lynn | 2010 |
| A E Thomson Limited | Norfolk | 2003 |
| A F (Maintenance) Holdings Limited | Fareham | 2024 |
| A F Commercial Limited | Ilkley | 2009 |
| A F Davies & Sons Properties Limited | Orpington | 2018 |
| A F Farming Ltd | Swindon | 2024 |
| A F Holdings (AFH) Limited | Burntwood | 2015 |
| A F I C Limited | Kenilworth | 2024 |
| A F Machinery (Holdings) Limited | Thetford | 2025 |
| A F Personal Holdings Ltd | Grantham | 2019 |
| A F S Financial Management Limited | London | 1981 |
| A F Thomas Holdings Limited | Newport | 2025 |
| A F Wilkinson Holdings Limited | Baildon | 2004 |
| A Fagan Empire Holdings Ltd | Watford | 2021 |
| A Farrow Contract Services Limited | Hartlepool | 2016 |
| A Fawcett Holdings Limited | Leeds | 2007 |
| A Ferguson Limited | Bristol | 2013 |
| A Finance Ltd | Taunton | 2012 |
| A Firma Ltd | Poole | 2022 |
| A Forsyth Holdings Ltd. | Glasgow | 2003 |
| A G B Financial Services Ltd | Evesham | 2002 |
| A G Cunningham Consulting Ltd | Romsey | 2010 |
| A G Finance (Scotland) Limited | Kilmarnock | 2005 |
| A G Finance Hub Ltd | London | 2012 |
| A G Finance Limited | London | 1985 |
| A G Global Opportunities Limited | London | 2019 |
| A G Holdings Europe Ltd | Nottingham | 2023 |
| A G Lawrence Holdings Limited | Tamworth | 2018 |
| A G Mortgage Services Limited | Sidcup | 2008 |
| A G Mortgages Limited | Bolton | 2006 |
| A G Rose Limited | Derby | 2020 |
| A G S Holdings (Taunton) Limited | Taunton | 2024 |
| A G Sadowski Underwriting Limited | London | 1999 |
| A G Sayers Limited | London | 2011 |
| A G Wealth Management Ltd | Kidderminster | 2012 |
| A Gharial Finance Solutions Limited | London | 2024 |
| A Girl of My Word Limited | London | 2021 |
| A Godfrey Properties Holdings Limited | Northwich | 2024 |
| A Good Start Ltd | London | 2019 |
| A Green & L Evans Financial Services Limited | Worcester | 2025 |
| A Green and L Evans Group Limited | Worcester | 2025 |
| A Green Futures Ltd | Battersea | 2022 |
| A Green Holdings Limited | Malvern | 2018 |
| A Green Life Company Limited | Greenham | 2024 |
| A Griffiths Holdings Ltd | Ross-On-Wye | 2025 |
| A Group Holdings Limited | London | 2018 |
| A Group Investments Ltd | Leicester | 2026 |
| A Group of Companies Ltd | Leicester | 2025 |
| A Guest Holdings Limited | Eastbourne | 2023 |
| A H a Group of Companies Ltd | London | 2021 |
| A H and M (Holdings) Limited | Craigavon | 2019 |
| A H Barr Limited | Turvey | 2008 |
| A H Engineering (North East) Holdings Limited | Hebburn | 2021 |
| A H Griffiths Holdings Limited | Ludlow | 2025 |
| A H Holdings (Cheshire) Limited | Cheadle | 2025 |
| A H Monsen (Holdings) Limited | Morecambe | 2015 |
| A H Worth and Company Limited | Spalding | 1948 |
| A Hancock Holdings Limited | Stoke-On-Trent | 2021 |
| A Hardy Holdings Limited | Middlesbrough | 2025 |
| A Hargreaves Financial Services Ltd | Ruislip | 2017 |
| A HAY Ltd | Benfleet | 2025 |
| A Henderson Financial Planning Limited | Glasgow | 2021 |
| A Hickman Compliance Consultancy Services Ltd | Upminster | 2017 |
| A Holding Group Ltd | London | 2026 |
| A Hunt Consultancy Limited | Hyde | 2014 |
| A I F Limited | Saffron Walden | 2002 |
| A Investment Group Ltd | Bradford | 2025 |
| A J & D Chapelhow (Holdings) Limited | Penrith | 2018 |
| A J (Holdings) Limited | Abergavenny | 2014 |
| A J Balkitis Limited | Nottingham | 2008 |
| A J Betteridge Investments Limited | London | 2015 |
| A J Buckley Asset Management Limited | Weybridge | 1992 |
| A J Building Services (NW) Holdings Limited | Bootle | 2015 |
| A J Capel Limited | Bedford | 2007 |
| A J Cobb Holdings Ltd | Huntingdon | 2026 |
| A J Edwards & Associates Ltd. | Saffron Walden | 2011 |
| A J Folkmanis Limited | St. Ives | 2001 |
| A J Gammond Holdings Ltd | Malvern | 2023 |
| A J Gibson Holdings Limited | Brackley | 2018 |
| A J H Wealth Management Limited | Dinas Powys | 2009 |