| AMS 1960 Limited | Southampton | 2004 |
| AMS 2729 Limited | Melksham | 2006 |
| AMS 84 Ltd | London | 2019 |
| AMS Aircraft Recovery Limited | Colindale | 2014 |
| AMS Commercials Limited | Kidwelly | 2023 |
| AMS Composites Ltd | London | 2024 |
| AMS Compressor Services Ltd | Royal Victoria Docks | 2020 |
| AMS Concrete Ltd | Lincoln | 2025 |
| AMS Distributors Ltd | Alford | 2015 |
| AMS Electronics Ltd | Axminster | 2005 |
| AMS Engineering S.E. Ltd | Dover | 2014 |
| AMS Installations Ltd | Northampton | 2016 |
| AMS Integrated Solutions Limited | Glasgow | 2022 |
| AMS Maintenance Solutions Ltd | Pembroke | 2019 |
| AMS Mechanical Fitting Services Limited Limited | Middlesbrough | 2017 |
| AMS Neve Limited | Burnley | 2005 |
| AMS Plant & Agri Ltd | Callington | 2025 |
| AMS Robotics (South) Ltd | Crawley | 2025 |
| AMS Sanderson Limited | Tuxford | 2009 |
| AMS Services Limited | Bolton | 2023 |
| AMS Tech Ltd | Woodbridge | 2008 |
| AMS Technical (Plastics) Limited | Chorley | 2014 |
| AMS Ventilation UK Ltd | Birmingham | 2026 |
| AMS Weaire Ltd | Ruislip | 2015 |
| AMS Welding & Fabrication Ltd | North Shields | 2024 |
| AMS Windows, Doors and Conservatories Limited | London | 2021 |
| AMS Woodwork Ltd | Rhyl | 2023 |
| Ams-Aurora Marine Service Co., Ltd | Beckenham | 2022 |
| Ams-Sensors Ltd | Taunton | 2025 |
| AMS3D Ltd | Bracknell | 2025 |
| Amsa Aircraft Maintenance Services Aviation Ltd | London | 2025 |
| Amsano Ltd | Watford | 2015 |
| Amsbury Storage & Packing Limited | Maidstone | 2004 |
| Amscot Packaging Limited | Glasgow | 1998 |
| Amsel Leathers Limited | Morden | 2025 |
| Amserve Ltd | Burntwood | 2023 |
| Amsgro Limited | West Yorkshire | 2003 |
| Amsho Global Translation Ltd | Liverpool | 2022 |
| Amsis Pipe Welding Ltd | Milton Keynes | 2026 |
| Amsons Electrical Contractors Limited | Waltham Abbey | 2008 |
| Amspeed Limited | London | 2011 |
| Amst Glazing Ltd | London | 2026 |
| Amstar Entertainment Limited | Loughton | 2007 |
| Amsteer Sales Limited | Tamworth | 1974 |
| Amstel Doors UK Limited | Exeter | 2019 |
| AMT Biotech Ltd | Beckenham | 2019 |
| AMT Machine Tools Ltd | Coalville | 2011 |
| AMT Mechanical Services Ltd | Doncaster | 2024 |
| AMT Technical Services Ltd | Inverurie | 2023 |
| AMT Welding Limited | Peterborough | 2014 |
| Amtac UK Limited | London | 2026 |
| Amtec Electrical Systems Ltd | West Linton | 2024 |
| Amtec Engineering Limited | Halifax | 2004 |
| Amtec Solutions Ltd | Auchterarder | 2011 |
| Amtech Automated Micro Technology Limited | Newcastle Upon Tyne | 1998 |
| Amtech Developments (UK) Limited | Greengates | 2015 |
| Amtech Fabrication Solutions Limited | Wooburn Green | 2010 |
| Amtech Limited | London | 1989 |
| Amtech Offshore Ltd | Darlington | 2025 |
| Amtech Range Limited | Wednesbury | 2009 |
| Amtech Rapid Prototyping Ltd | South Shields | 2005 |
| Amtechnics Ltd | Cambridge | 2025 |
| Amtek Plastics UK Limited | Newton Abbot | 2015 |
| Amtek Precision Engineers Limited | Torquay | 2002 |
| Amteq E & I Services Limited | Aberdeenshire | 2005 |
| Amtico Holdings Limited | Coventry | 1995 |
| Amtico International Limited | Warwickshire | 1988 |
| Amtrim Ltd | Preston | 2015 |
| Amtsy Limited | Lichfield | 2018 |
| Amtt Services Ltd | Welling | 2024 |
| Amufacture Ltd | Portsmouth | 2018 |
| Amuga Limited | Watford | 2023 |
| Amulet Coffee Ltd | Glasgow | 2024 |
| Amulet Hotkey Ltd | Newton Abbot | 1990 |
| Amuri Cafe Limited | Stratford-Upon-Avon | 2025 |
| Amurr Ltd | London | 2025 |
| Amuse Bouche by AO Limited | London | 2021 |
| Amusement Device Services Limited | Leicester | 2014 |
| Amusement Engineering Ltd. | Lutterworth | 2011 |
| Amusement Resource Network Limited | Worcester | 2021 |
| Amusement Sales & Service Ltd | Belfast | 1999 |
| AMV Fuels Limited | Southwell | 2026 |
| Amvmaintenance Ltd | Cambridge | 2025 |
| AMW Engineering Services Limited | Derby | 2018 |
| AMW Hydraulic Solutions Ltd | Watford | 2024 |
| AMW Installation Engineers Ltd | Leeds | 2011 |
| AMW Light Engineering Ltd | Walsall | 2020 |
| AMW Restorations Limited | Mexborough | 2017 |
| Amwa Limited | London | 2013 |
| Amwell Blast Coat Ltd | Ware | 2010 |
| Amwell Kitchens Limited | Hoddesdon | 2006 |
| Amwell Springs Brewery Company Limited | Wallingford | 2017 |
| Amwell Systems Limited | Trentham | 1991 |
| Amwhite Services Ltd | Milton Keynes | 2018 |
| Amws Services Ltd | Leeds | 2020 |
| AMX Healthtech UK Limited | Sutton | 2026 |
| AMX Print Limited | Bishop'S Stortford | 2003 |
| AMX Services Limited | Llandudno | 2001 |
| AMX Support UK Ltd | Luton | 2020 |
| AMX29 Services Ltd | Nuneaton | 2010 |