| Ambrosia Pharma Ltd | Cardiff | 2018 |
| Ambrosial Services Limited | Watford | 2014 |
| Ambu Ayya Limited | Manchester | 2024 |
| Ambu Group Ltd | Manchester | 2026 |
| Ambu Kare Stevenage Limited | London | 2018 |
| Ambu-Kare (UK) Limited | Peterborough | 2007 |
| Ambulance & Medical Support Services (UK) Limited | Sandhurst | 2012 |
| Ambulance International Scarborough Ltd | Scarborough | 2018 |
| Ambulance Operations Ltd | London | 2021 |
| Ambulance Relief Centres Limited | Oldham | 2025 |
| Ambulance Rescue Limited | Northampton | 2022 |
| Ambulance Response Group Ltd | Bedford | 2017 |
| Ambulance Response Services Ltd | Bedford | 2011 |
| Ambulance Service Limited | Cardiff | 2013 |
| Ambulance Solutions Ltd | Southend-On-Sea | 2017 |
| Ambulant Physiotherapy Ltd | Preston | 2010 |
| Ambulatory Surgery International Ltd | London | 2015 |
| Ambulnz Community Partners Ltd. | Stratford | 2007 |
| Ambutech Pre-Hospital Care Ltd | Manchester | 2019 |
| Ambutrust Limited | Leicester | 2023 |
| Amby Medical Services Ltd | London | 2023 |
| AMC (Penryn) Limited | Truro | 2016 |
| AMC 26 Ltd | Farnham | 2022 |
| AMC Aesthetics Limited | Heswall | 2025 |
| AMC Care Ltd | Ipswich | 2018 |
| AMC Case Management Ltd | Bury | 2024 |
| AMC Counselling Ltd | London | 2024 |
| AMC Evergreen Ltd | Milton Keynes | 2017 |
| AMC Freelance Para Limited | Southampton | 2019 |
| AMC Health Care Ltd | London | 2012 |
| AMC Health Ltd | Norwich | 2025 |
| AMC Healthcare Solutions Ltd | Ellesmere Port | 2023 |
| AMC Imaging Ltd | Manchester | 2023 |
| AMC Medics Limited | Bedford | 2024 |
| AMC Nursing Limited | Hornchurch | 2023 |
| AMC Pharm Ltd | Sheffield | 2026 |
| AMC Rise Ltd | Daventry | 2018 |
| AMC Safety Limited | Middlesbrough | 2013 |
| AMC Surgical Limited | Belfast | 2024 |
| Amcare Limited | Deeside | 1996 |
| Amcarers Limited | Thamesmead | 2011 |
| Amcg Ltd | Ellesmere Port | 2021 |
| Amcgrathhealth Limited | Wirral | 2023 |
| Amchara Limited | Benfleet | 2022 |
| Amck Clinical Psychology Services Limited | Omagh | 2017 |
| Amcko Limited | Glasgow | 2013 |
| Amclinical Limited | Birmingham | 2019 |
| Amcol Services Limited | Ashby-De-La-Zouch | 2023 |
| Amcss Ltd | Doncaster | 2025 |
| AMD Care Services Ltd | Milton Keynes | 2022 |
| AMD Dent Ltd | Birmingham | 2026 |
| AMD GP Services Ltd | Edgware | 2026 |
| AMD Healthcare Services Limited | Borehamwood | 2019 |
| AMD Maple Limited | Glasgow | 2024 |
| AMD Medical Services Limited | Kilmarnock | 2014 |
| AMD Pharma Ltd | London | 2022 |
| AMD Practice Limited | Birmingham | 2016 |
| AMD Solutions Limited | Banbridge | 2024 |
| AMD7 Limited | Slough | 2025 |
| Amdad Ahmed Limited | Sutton Coldfield | 2016 |
| Amdec Care and Support Services Limited | London | 2024 |
| Amdecc Limited | London | 1994 |
| Amdel Medical Limited | Liverpool | 2004 |
| Amdenta Ltd | Hove | 2023 |
| Amdh Smile Limited | Potters Bar | 2024 |
| Amdpi Ltd | Glasgow | 2022 |
| Amduriano Ltd | Horsham | 2021 |
| AME Blood Cancer Trust | London | 2021 |
| AME Consultancy Limited | Birmingham | 2025 |
| AME Partners Ltd | Portsmouth | 2015 |
| AME Pharma Ltd | Bradford | 2025 |
| Amea Health Limited | Harlow, Essex | 2025 |
| Amed Services Ltd | London | 2019 |
| Amedea Medical Services Limited | London | 2007 |
| Amedica Ltd | Tenterden | 2007 |
| Amedical Ltd | London | 2024 |
| Amedics Clinic Ltd | Leicester | 2019 |
| Amedics Holdings Ltd | Leicester | 2022 |
| Ameds Medical Ltd | Leeds | 2023 |
| Amee Georgina Ltd | High Wycombe | 2025 |
| Amee Solutions Limited | Rainham | 2011 |
| Ameed Dharan Matyal CIC | Sheffield | 2026 |
| Ameen Consulting ( London ) Ltd | Mitcham | 2025 |
| Ameena ASH Ltd | Billericay | 2023 |
| Ameena Azad Ltd | Birmingham | 2022 |
| Ameena Optics Ltd | Blackburn | 2023 |
| Ameer Medical Services Ltd | Prescot | 2019 |
| Ameerah Care Services Limited | Dartford | 2015 |
| Ameerah Childcare Limited | Barking | 2023 |
| Ameerah Health Limited | Rochester | 2010 |
| Ameerah Healthcare Ltd | Leighton Buzzard | 2025 |
| Ameerally Surgery Ltd | Northampton | 2019 |
| Ameesal Consulting Limited | Littlehampton | 2017 |
| Ameeta Boyal Limited | Nottingham | 2018 |
| Amega Limited | Ipswich | 2016 |
| Amegreen Childrens Services Limited | Mortimer | 2013 |
| Amegreen Complex Homecare Limited | Nottingham | 2012 |
| Amegreen Group Limited | Mortimer | 2025 |
| Ameh Medical Consultancy Ltd | Manchester | 2010 |
| Ameira Therapies Ltd | Coventry | 2018 |