| Ashton Investments and Real Estate Ltd | Kirkby In Furness | 2010 |
| Ashton Investments Limited | Newry | 2025 |
| Ashton Marketing Holdings Ltd | Market Harborough | 2018 |
| Ashton Mortgage & Financial Solutions Limited | Lancashire | 2004 |
| Ashton Property Ventures Ltd | London | 2026 |
| Ashton Risk Management Limited | Bristol | 2018 |
| Ashton Seven Holdings Ltd | Reading | 2023 |
| Ashton Smethurst Limited | Manchester | 1936 |
| Ashton Steel Holdings Limited | Glossop | 2002 |
| Ashton Stone Myers Limited | Stafford | 2024 |
| Ashton Towler Ltd | Oldham | 2023 |
| Ashtons Holdings Ltd | London | 2022 |
| Ashtons Holdings North West Limited | Preston | 2023 |
| Ashtons Services Holdings Ltd | Stevenage | 2024 |
| Ashtrad Capital Ltd | London | 2022 |
| Ashtrad Holdings Ltd | London | 2018 |
| Ashtree Financial Holdings Ltd | Newry | 2023 |
| Ashtree Financial Services Ltd | Newry | 2016 |
| Ashtree Group Limited | Downham Market | 2020 |
| Ashtree Hill Farms | Tandragee | 2026 |
| Ashtree Trading Group Limited | Shrewsbury | 2019 |
| Ashu's Finance Limited | Wolverhampton | 2017 |
| Ashurst Mortgage Solutions Limited | Didcot | 2014 |
| Ashurst Shipbrokers Ltd | Cuffley | 2017 |
| Ashurst Walton Limited | Croydon | 2017 |
| Ashvale Capital Ltd | London | 2026 |
| Ashvic Enterprises Ltd | Manchester | 2026 |
| Ashville Construction Group Limited | West Drayton | 2024 |
| Ashville UK Group Limited | Bristol | 2016 |
| Ashvitech Systems Ltd | Birmingham | 2025 |
| Ashwell & Sons BMS Limited | Bolton | 2014 |
| Ashwell Mortgage Services Ltd | London | 2019 |
| Ashwell PT Limited | Great Missenden | 2022 |
| Ashwick Business Solutions Limited | Epsom | 2023 |
| Ashwick Claims Services Limited | Old Hatfield | 1999 |
| Ashwood Capital Ltd | London | 2007 |
| Ashwood Finance Limited | Altrincham | 2025 |
| Ashwood Investments Limited | Bromley | 2025 |
| Ashwood Law Estate Planning Ltd | Lichfield | 2019 |
| Ashwood Law Wealth Management Limited | Staffordshire | 1998 |
| Ashworth & Ingram Compensation Partners Limited | South Nutfield | 2025 |
| Ashworth Electrical Holdings Ltd | Stockport | 2023 |
| Ashworth Financial Planning Limited | Colchester | 2013 |
| Ashworth Financial Services Ltd | Maidenhead | 2010 |
| Ashworth Managed Services Ltd | Bacup | 2022 |
| ASI Edinburgh a Limited | London | 2023 |
| ASI Holdings Incorporated Limited | London | 2025 |
| ASI Reality Limited | Brighton | 2018 |
| Asia Asset Management Ltd | London | 2024 |
| Asia Century Capital Limited | London | 2010 |
| Asia Combo Holdings Limited | Birmingham | 2016 |
| Asia Continental Holdings Limited | Preston | 2023 |
| Asia Dragon Trust PLC | Edinburgh | 1987 |
| Asia Group Holdings Ltd | Durham | 2025 |
| Asia Group Limited | Birmingham | 2021 |
| Asia Group Real Estate Ltd | Durham | 2025 |
| Asia Insurance Brokers Limited | London | 1995 |
| Asia Investment and Development Ltd | Cardiff | 2019 |
| Asia Investments Limited | London | 1987 |
| Asia Medical Global Limited | London | 2010 |
| Asia Money Transfer Ltd | Smethwick | 2001 |
| Asia Pacific Consulting & Trading Co. Ltd | London | 2022 |
| Asia Private Limited | London | 2023 |
| Asiabill EU Company Limited | London | 2019 |
| Asiago (Holdings) Ltd | Birmingham | 2020 |
| Asian Energy Impact Trust PLC | Bristol | 2021 |
| Asian Prophets (UK) Ltd | Bristol | 2024 |
| Asian Traders Holdings Ltd | Hayes | 2023 |
| Asiana Minerals Limited | Newcastle Upon Tyne | 2019 |
| Asiana Money Transfer & Exchange Limited | London | 2015 |
| Asiapay (UK) Limited | London | 2023 |
| Asias Land Limited | Reigate | 2022 |
| Asiaverify Limited | London | 2025 |
| Asic Group Limited | London | 2023 |
| Asif Group Ltd | Oxford | 2026 |
| Asif Qasim Holdings Limited | London | 2014 |
| Asifs Afro Caribbean Groove Ltd | Ashby-De-La-Zouch | 2011 |
| Asiko Collections Limited | Milton Keynes | 2015 |
| Asil Nonreg Limited | Welwyn | 2017 |
| Asim Family Holdings Ltd | London | 2022 |
| Asim Saleem Consulting Ltd | Bradford | 2012 |
| Asimi Funding 2024-1 Holdings Limited | London | 2024 |
| Asimi Funding 2024-1 PLC | London | 2024 |
| Asimi Funding 2025-1 Holdings Limited | London | 2025 |
| Asimi Funding 2025-1 PLC | London | 2025 |
| Asimi Funding 2025-2 Holdings Limited | London | 2025 |
| Asimi Funding 2025-2 PLC | London | 2025 |
| Asimi Funding Limited | London | 2022 |
| Asimilar Group PLC | London | 2002 |
| Asino Farm Ltd | Manchester | 2023 |
| Asionis Ltd | London | 2025 |
| Asirang Group Limited | Leicester | 2024 |
| Asiras Ltd | London | 2026 |
| Asirem Holdco Limited | Manchester | 2025 |
| Asis Property Holdings Ltd | Heywood | 2026 |
| ASJ Capital Ventures Limited | Hook | 2022 |
| ASJ Holdco Limited | Evesham | 2023 |
| ASJ Warwick (Holdings) Ltd | Doncaster | 2025 |
| Asjgill Management Limited | Chigwell | 2013 |
| Asjlc Limited | Aylesbury | 2011 |