| Amethyst Leadership Limited | Warrington | 2022 |
| Amethyst Legal Consulting Limited | Thame | 2021 |
| Amethyst Management Limited | Bristol | 1999 |
| Amethyst Marine Limited | Watchet | 2001 |
| Amethyst Marketing Ltd | Lichfield | 2012 |
| Amethyst Pharma Limited | Camberley | 2011 |
| Amethyst Precision Engineering Ltd | Pontypridd | 2025 |
| Amethyst Research Limited | Northampton | 2012 |
| Amethyst Risk Management Limited | Basingstoke | 2007 |
| Amethyst Virtual Accounts Ltd | Altrincham | 2021 |
| Amethysts Accounting Ltd | London | 2018 |
| Ametis Consulting Ltd | Manchester | 2020 |
| Ametis London Ltd | Poole | 2016 |
| Ameton Ltd | Westhill | 2025 |
| Ametrik Limited | Surrey | 2004 |
| Ametrine Consultancy Ltd | Liverpool | 2025 |
| Ametros Group Ltd | Bristol | 2015 |
| Ameva Solutions Limited | London | 2021 |
| Amevenu Ventures Ltd | London | 2022 |
| Amevia Limited | Romford | 2025 |
| Amevor Consulting Ltd | London | 2012 |
| Amex Associates Limited | Barnet | 2004 |
| Amex Consultancy Limited | Brentwood | 2023 |
| Amex Executive Consulting Ltd | Solihull | 2025 |
| Amex Outsourcing Limited | Reading | 2026 |
| Amex Project Management Ltd. | Runcorn | 2017 |
| Amexin Limited | Warwick | 2020 |
| Amey Associates Limited | Hornchurch | 2010 |
| Amey Bhatt Limited | London | 2015 |
| Amey Dock & Door Specialists Limited | Chelmsford | 2023 |
| Amey Group Limited (the) | Maidenhead | 1934 |
| Amey Highways Limited | London | 2008 |
| Amey Leisure Limited | Abingdon | 2017 |
| Amey Limited | London | 1989 |
| Amey OW Limited | London | 1985 |
| Amey OWR Limited | London | 1995 |
| Amey Roadstone International Limited | Maidenhead | 1936 |
| Amey TPT Limited | London | 2004 |
| Amey UK Limited | London | 2003 |
| Ameya (Europe) Limited | Edinburgh | 2012 |
| Ameya Consulting Limited | Saltash | 2006 |
| Amezeen Care and Compliance Solutions Limited | Leeds | 2025 |
| Amezzo Limited | Marlow | 2001 |
| AMF (UK) Limited | Chesterfield | 2012 |
| AMF Accountancy Ltd | Ipswich | 2021 |
| AMF Advisory Limited | London | 2026 |
| AMF Alpha Management Forum Limited | | 2006 |
| AMF Commercial Services Ltd | Stockton On Tees | 2021 |
| AMF Consultancy Services Limited | Brighton | 2021 |
| AMF Consultants Ltd | Chelmsford | 2018 |
| AMF Consulting Limited | London | 2022 |
| AMF Contractor Services Limited | Newcastle-Under-Lyme | 2022 |
| AMF Design Ltd | Southampton | 2023 |
| AMF Enterprises Limited | Northampton | 2013 |
| AMF Events Ltd | Wokingham | 2015 |
| AMF Films Ltd | Hornchurch | 2026 |
| AMF Group Limited | Thame | 2003 |
| AMF Investments (Two) Limited | London | 2014 |
| AMF Investments Limited | London | 2014 |
| AMF Logistical Solutions Limited | Oldbury | 2020 |
| AMF Management Consultancy Ltd | Burgess Hill | 2018 |
| AMF Management Limited | Milnthorpe | 2018 |
| AMF Mech Ltd | Enniskillen | 2021 |
| AMF Resolution Ltd. | Barnet | 2017 |
| AMF Services Ltd | Coventry | 2025 |
| AMF SERVICES60 Ltd | Telford | 2026 |
| AMF Steel Design Ltd | Bristol | 2011 |
| AMF Technical Services Limited | Glasgow | 2008 |
| AMF24 Limited | Bristol | 2026 |
| AMF27 Consulting Ltd | Woking | 2025 |
| Amfa 786 Ltd | Sheffield | 2013 |
| Amfa Legal Ltd | Sheffield | 2026 |
| Amfajf Group Limited | Peterborough | 2024 |
| Amfajf Holdings Limited | Peterborough | 2024 |
| Amfajf Investments Limited | Peterborough | 2024 |
| Amfe Consultancy Ltd | Leeds | 2023 |
| Amfe Limited | London | 2014 |
| Amffra Consulting Ltd | Belper | 2015 |
| Amfin Consulting Ltd | Billericay | 2015 |
| Amfinn Ltd | Barrowford | 2024 |
| Amfis Holdings Limited | Leyland | 2023 |
| Amfis Limited | London | 2001 |
| Amfiska Ltd | London | 2026 |
| Amflo Ltd | Leeds | 2022 |
| Amfo Talent Limited | London | 2021 |
| Amforth Ltd | Liverpool | 2006 |
| Amfz Solutions Ltd | Bolton | 2013 |
| AMG (Brighouse) Limited | London | 2013 |
| AMG Accountancy Ltd | London | 2021 |
| AMG Accountants Limited | London | 2007 |
| AMG Accounting Limited | Beckenham | 2009 |
| AMG Achieve Maximise Grow Ltd | Harrow | 2025 |
| AMG Advertising Topco Limited | Bristol | 2006 |
| AMG Advisory Group Limited | Mold | 2022 |
| AMG Advisory Limited | Cardiff | 2018 |
| AMG AL Mada Group Ltd | Manchester | 2026 |
| AMG Architectural Limited | Harrogate | 2017 |
| AMG Bookkeeping Services Ltd | Preston | 2014 |
| AMG Business Coaching Ltd | Bury | 2023 |
| AMG CA Ltd | Castlewellan | 2024 |