| Amrita Nutrition Topco Limited | Sheffield | 2023 |
| Amrivest Limited | Cardiff | 2026 |
| Amrk Limited | Northwood | 2025 |
| Amroc Capital Ltd | London | 2014 |
| Amrock Holdings UK Limited | Bristol | 2024 |
| Amror Holdings Limited | Exeter | 2025 |
| Amros Group Limited | London | 2020 |
| Amroth Development Co. Limited | Kingston Upon Thames | 1980 |
| Amru Consultancy Limited | Henley-In-Arden | 2019 |
| Amruva Ltd | Ealing | 2026 |
| AMS 2 Holdings Limited | Birmingham | 2017 |
| AMS Accountants Group Ltd | Manchester | 2019 |
| AMS Accounting Midco Limited | Manchester | 2024 |
| AMS Advisory Midco Limited | Manchester | 2022 |
| AMS Build Group Ltd | Lincoln | 2022 |
| AMS Business Ventures Ltd | Bolton | 2026 |
| AMS Capital Group Limited | Bo'Ness | 2026 |
| AMS Capital Market Limited | London | 2012 |
| AMS Care Holdings Limited | Harrow | 2019 |
| AMS CF Topco Ltd | Manchester | 2022 |
| AMS Chester Ltd | Chester | 2014 |
| AMS Communications Ltd | Wimborne | 2019 |
| AMS Consultants Underwriting Limited | London | 2012 |
| AMS Consulting Midco Ltd | Manchester | 2023 |
| AMS Corporate Finance Limited | Manchester | 2019 |
| AMS Derbyshire Ltd | Derby | 2019 |
| AMS Family Holdings Limited | Broxbourne | 2025 |
| AMS Finance Ltd | Stockport | 2019 |
| AMS Financial Consulting Limited | Mansfield | 2013 |
| AMS Financial Dynamics Limited | Farnham | 2015 |
| AMS Financial Services Limited | Leigh-On-Sea | 2001 |
| AMS GB 1 Limited | Manchester | 2020 |
| AMS GBL Limited | Exeter | 2023 |
| AMS Global Group Holdings Limited | Aberdeen | 2026 |
| AMS Group (UK) Limited | Doncaster | 2002 |
| AMS Group (Warwick) Limited | Hinckley | 2019 |
| AMS Group International Limited | Aberdeen | 2023 |
| AMS Group Investments Limited | Aberdeen | 2023 |
| AMS Holdings 2018 Limited | Northampton | 2018 |
| AMS Holdings Group Limited | Blackwood | 2025 |
| AMS IB Limited | Manchester | 2024 |
| AMS Insolvency Midco Ltd | Manchester | 2022 |
| AMS Insurance Services Limited | Bicester | 2000 |
| AMS Investment Group Ltd | Nottingham | 2023 |
| AMS Investment Services Limited | Liverpool | 2024 |
| AMS Mortgage and Protection Ltd | Rayleigh | 2018 |
| AMS Mortgages Limited | Huddersfield | 2026 |
| AMS Nuclear Engineering (Holdings) Limited | Bridgwater | 2022 |
| AMS Plumbers Merchants Holdings Limited | Stockton Heath | 2018 |
| AMS Properties (Sheffield) Limited | Sheffield | 2014 |
| AMS Property Investments Ltd | Manchester | 2018 |
| AMS Sloan Holdings Ltd | Clitheroe | 2020 |
| AMS Tax Midco Limited | Manchester | 2021 |
| AMS Wealth Management Ltd | Gerrards Cross | 2021 |
| AMS Wealth Management Midco Ltd | Manchester | 2023 |
| AMS78 Ltd | Cardiff | 2025 |
| Amsa Global Property Ltd | Watford | 2019 |
| Amsa Holdings Limited | Middlesbrough | 2021 |
| Amsaca (Group) Ltd | Milton Keynes | 2022 |
| Amsafons Ltd | East Sussex | 2025 |
| Amsatarn Holdings Ltd | Stratford-Upon-Avon | 2024 |
| Amsb Ltd | Leicester | 2018 |
| Amsbc Holdings Ltd | Dungannon | 2021 |
| Amsco Investments Ltd | Manchester | 2015 |
| Amser Holdings Limited | Cardiff | 2021 |
| Amshi Limited | Taunton | 2025 |
| Amshold Securities Limited | Loughton | 1997 |
| Amsi Group Ltd | London | 2024 |
| Amsi UK Group Ltd | Rochdale | 2025 |
| Amsit Investments Ltd | Spalding | 2023 |
| Amsm Solutions Ltd | Wolverhampton | 2022 |
| Amso Holdings Ltd | Biggleswade | 2020 |
| Amso Investments | Milton Keynes | 2017 |
| Amsons Group Holdings Ltd | Birmingham | 2024 |
| Amsoph Ltd | Stanmore | 2023 |
| Amsoph Ventures Ltd | Stanmore | 2023 |
| Amsprop Limited | Loughton | 1984 |
| Amstar Limited | Upper Belvedere | 2017 |
| Amstech Group (UK) Limited | East Sussex | 2006 |
| Amstel Fund Management Limited | Buckingham | 2016 |
| Amstran Group Ltd | Rickmansworth | 2021 |
| Amsty Innovations Limited | London | 2022 |
| Amsvest Limited | Loughton | 2011 |
| Amsvision Holdings Limited | Warrington | 2022 |
| Amsw Limited | Bridge Of Weir | 2019 |
| AMT Auto Holdings Limited | Leeds | 2025 |
| AMT Beacon Holdings Limited | London | 2025 |
| AMT Consultancy Limited | Herefordshire | 2007 |
| AMT Exchequer Court Limited | London | 2016 |
| AMT Futures Limited | London | 1961 |
| AMT Global Investments Limited | Leeds | 2006 |
| AMT International Holdings Limited | London | 2016 |
| AMT Lawyers Holdings Limited | Blackburn | 2013 |
| AMT Properties Holdings (UK) Ltd | London | 2019 |
| AMT Retail Holdings Ltd | London | 2023 |
| AMT Vehicle Rental Limited | Leeds | 1999 |
| AMT2 Limited | Scunthorpe | 2015 |
| Amtar Investments Ltd | London | 2018 |
| Amtek Group Limited | Wimborne | 2024 |
| Amthor Risk Partners Limited | King'S Lynn | 2019 |