| AMS VAT Ltd | Manchester | 2022 |
| AMS Wimbledon Business Limited | Sutton | 2019 |
| Ams-Abseiling Multi Services Ltd | Milton Keynes | 2013 |
| Amsaan Accessible Tours UK Ltd | London | 2023 |
| Amsaho Limited | Bournemouth | 2013 |
| Amsal Consultancy Ltd | Mirfield | 2022 |
| Amsam Consultancy Services Limited | Bradford | 2025 |
| Amsasara Limited | Coventry | 2017 |
| Amsash Ltd | Dudley | 2018 |
| Amsbi Ltd | Virginia Water | 2018 |
| Amsbras Ltd | Dumfries | 2025 |
| Amsbury Consulting Limited | Maidstone | 2018 |
| Amsco Fire Ltd | Rye | 2010 |
| Amsd Ltd | Bolton | 2013 |
| Amsden & Young Ltd | Loughborough | 2012 |
| Amsel Tech Ltd | Witney | 2014 |
| Amselina Ltd | Wirral | 2023 |
| Amshire Group Limited | Cheadle Hulme | 2025 |
| Amshold Trading Limited | Loughton | 2013 |
| Amsi Consultancy Services Ltd | Derby | 2011 |
| Amsis Limited | Aberdeen | 2006 |
| Amsj & Co Limited | Kent | 2020 |
| Amsk Holdings Ltd | Sale | 2024 |
| Amska Mardin Limited | Bury | 2011 |
| Amsland Limited | East Sussex | 1989 |
| Amsm Consulting Ltd | Oakham | 2022 |
| Amsmith Ltd. | Falkirk | 2024 |
| Amsogood Consulting Ltd | Southall | 2023 |
| AMSOLUTION247 Ltd | Birmingham | 2020 |
| Amsolutions Ltd | London | 2022 |
| Amsom Limited | Basingstoke | 2017 |
| Amson Engineering Ltd | London | 2018 |
| Amson Professional Services Limited | Middlewich | 2023 |
| Amson Solutions Ltd | Maidstone | 2014 |
| Amspec NDT Limited | Burton-On-Trent | 2017 |
| Amsr Accountancy Ltd | Poole | 2018 |
| Amsr Ltd | Bolton | 2015 |
| Amsric Holdings Limited | London | 1992 |
| Amss Consultancy Ltd | Stevenage | 2024 |
| Amss Fabrications Ltd | Bridgend | 2018 |
| Amssc Ltd | Luton | 2025 |
| Amssr Ltd | London | 2023 |
| Amstag Ltd | Rossendale | 2020 |
| Amsted Global Limited | Southampton | 2011 |
| Amstein Ltd | London | 2014 |
| Amstel Advisers Limited | Hungerford | 2016 |
| Amster Shot Ltd | London | 2015 |
| Amstermed UK Ltd | Belfast | 2021 |
| Amstone Charitable Trust Limited | Altrincham | 2008 |
| Amstone Management Limited | Strensham | 2009 |
| Amstor Accountants Limited | Birmingham | 2008 |
| Amstrad Digital Limited | Loughton | 2023 |
| Amstudio Design Limited | London | 2023 |
| Amsustainchange Limited | Birmingham | 2017 |
| Amsuua Limited | Watford | 2021 |
| Amsy Limited | Middlesex | 2008 |
| Amsyku Limited | Kettering | 2021 |
| Amsz Ltd | Sheffield | 2024 |
| AMT (Flint) Limited | Flint | 2023 |
| AMT + Co Ltd | Kingston Upon Thames | 2014 |
| AMT Accountax Services Limited | Mildenhall | 2023 |
| AMT Accounting Limited | Bicester | 2011 |
| AMT Aircraft Engineering and Property Investments Limited | Melton Mowbray | 2022 |
| AMT Aircraft Engineering Ltd | Telford | 2026 |
| AMT Automotive Parts Holding Ltd | London | 2015 |
| AMT Business (Northumbria) Limited | Alnwick | 2004 |
| AMT Business Consultancy Limited | Holywell | 2023 |
| AMT Business Solutions Ltd | Waterlooville | 2024 |
| AMT Capital Ltd | Epsom | 2017 |
| AMT Commercial Limited | Droitwich | 2017 |
| AMT Consulting Ltd | Oxford | 2022 |
| AMT Consulting Solutions Ltd | Burgess Hill | 2014 |
| AMT DB International Ltd | London | 2021 |
| AMT Design Consultants Ltd | Neath | 2018 |
| AMT Engineering Consultants Ltd | Sheffield | 2019 |
| AMT Environmental Consulting Ltd | Sidmouth | 2019 |
| AMT Falcon Exergy Limited | Brechin | 2000 |
| AMT Finance Transformation Limited | London | 2025 |
| AMT Group Holdings Ltd | Bradford | 2025 |
| AMT Healthcare Limited | Orpington | 2015 |
| AMT Interpreting Services Limited | London | 2024 |
| AMT Investments Ltd | Weybridge | 2016 |
| AMT Jojo’S Ltd | London | 2022 |
| AMT Lawyers Ltd | Blackburn | 2010 |
| AMT Legal Ltd | Widnes | 2025 |
| AMT Linkt Ltd | Wellington | 2023 |
| AMT Professional Services Ltd | Sheffield | 2024 |
| AMT Robotics Ltd | London | 2025 |
| AMT Signature Construction Ltd | Alton | 2025 |
| AMT Smart Solutions Ltd | Leeds | 2021 |
| AMT Structural Design Limited | Paisley | 2024 |
| AMT Vision Ltd | Watford | 2024 |
| Amtane Limited | Shipley | 2005 |
| Amtari Marketing Ltd | Harrow | 2026 |
| Amtax Interactive Solutions Limited | Surrey | 1995 |
| Amtc OP Co Limited | Dundee | 2025 |
| Amtec Consultants Limited | Warrington | 1992 |
| Amtec Corrosion Limited | Warrington | 1986 |
| Amtec Heritage Science CIC | Sittingbourne | 1997 |
| Amtech Consulting Ltd | London | 2019 |