| Alpha Homecare (Scotland) Limited | Glasgow | 2004 |
| Alpha Homecare Ltd | Oxford | 2025 |
| Alpha Hospital Group and Healthcare Ltd. | London | 2017 |
| Alpha Hospital Group Ltd | Aberdeen | 2022 |
| Alpha House Practice Ltd | Battersea Reach | 2026 |
| Alpha Hygiene Centre Limited | London | 2020 |
| Alpha Imaging Ltd | Harrow | 2023 |
| Alpha Kindergarten (Fletton) Limited | Nottingham | 1997 |
| Alpha Kindergarten Stanground Limited | Nottingham | 2018 |
| Alpha Laser Clinic Limited | Bradford | 2021 |
| Alpha Lifepath Ltd | Bedford | 2025 |
| Alpha Live in Care Ltd | Bath | 2021 |
| Alpha Massage Ltd | Hayling Island | 2022 |
| Alpha MAY Care First Ltd | Lancing | 2020 |
| Alpha MD Global Limited | London | 2020 |
| Alpha MED Ltd | London | 2022 |
| Alpha Medical Care Limited | Chelmsford | 2004 |
| Alpha Medical Clinic Ltd | Norwich | 2023 |
| Alpha Medical Consultancy Limited | Slough | 2004 |
| Alpha Medical Imaging Ltd | Oldham | 2013 |
| Alpha Medical Services (UK) Ltd | Barrow-Upon-Humber | 2008 |
| Alpha Medical Services Ltd | Hounslow | 2008 |
| Alpha Medical Solutions Limited | Guildford | 2012 |
| Alpha Naomegasm Healthcare Ltd | Heywood | 2014 |
| Alpha Neuro Massage Ltd | Derby | 2024 |
| Alpha Nursery (Canning Town) Limited | Canning Town | 2020 |
| Alpha Nursery (Eltham) Limited | London | 2020 |
| Alpha Odontal Care Ltd | Barrow-In-Furness | 2024 |
| Alpha Omega Care Support Ltd | Blackburn | 2023 |
| Alpha Omega Domiciliary Care Limited | Gloucester | 2017 |
| Alpha Omega Medics Ltd | Northwood | 2020 |
| Alpha Omega Pathology Ltd | Winchester | 2018 |
| Alpha One Oriental Limited | Preston | 2012 |
| Alpha Ortho Ltd | Sutton Coldfield | 2021 |
| Alpha Physio Clinics Ltd | East Cowes | 2024 |
| Alpha Physio Services Ltd | Bishop Auckland | 2019 |
| Alpha Physiotherapy Limited | London | 2006 |
| Alpha Physiotherapy Services Limited | Ipswich | 2019 |
| Alpha Plus Fostering Limited | Bolton | 2006 |
| Alpha Plus Midlands Ltd | Solihull | 2020 |
| Alpha Precious Residential Homes Limited | South Ockendon | 2022 |
| Alpha Premium Health Limited | London | 2024 |
| Alpha Psychiatry Ltd | London | 2022 |
| Alpha Psychological Consultancy Ltd | Newport | 2010 |
| Alpha Pyramids Ltd | London | 2020 |
| Alpha Quality Care Ltd | Newport | 2012 |
| Alpha RAD Ltd | Liverpool | 2019 |
| Alpha Radiology Reporting Ltd | Leicester | 2018 |
| Alpha Radiology Solutions Ltd | Sutton-In-Ashfield | 2026 |
| Alpha Realm Ltd | Warrington | 2025 |
| Alpha Reports Limited | Bradford | 2009 |
| Alpha Residential Care Ltd | Borehamwood | 2015 |
| Alpha Residential Services Ltd | Northolt | 2016 |
| Alpha Resolution Limited | Dartford | 2014 |
| Alpha Revive Ltd | Newcastle | 2023 |
| Alpha Romic Limited | Luton | 2014 |
| Alpha SAM Limited | Bexley | 2017 |
| Alpha Scan Ltd | Romford | 2014 |
| Alpha SI Limited | Sheffield | 2025 |
| Alpha Skinmetry Longevity Clinic Limited | Hull | 2025 |
| Alpha Smiles Ltd | Bushey | 2025 |
| Alpha Social Care Ltd | Bradford | 2022 |
| Alpha Solutions U.K Ltd | Bristol | 2015 |
| Alpha Star Healthcare Limited | Crawley | 2019 |
| Alpha Stars Early Years Ltd | London | 2019 |
| Alpha Steps Childcare Ltd | Erith | 2026 |
| Alpha Supplements Ltd | Liverpool | 2019 |
| Alpha Support Haven Ltd | Ipswich | 2025 |
| Alpha Supported Living Ltd | London | 2021 |
| Alpha Supported Living Services Ltd | Oxford | 2024 |
| Alpha Supportive Care Ltd | Birmingham | 2023 |
| Alpha Surgery Ltd | Bolton | 2018 |
| Alpha Tech Mobility Ltd | Staourbridge | 2023 |
| Alpha Therapeutic Care Ltd | Horley | 2024 |
| Alpha Training Ltd | Shipley | 2024 |
| Alpha Trinity Care Agency Limited | Tilbury | 2019 |
| Alpha Vision Healthcare Ltd | Crawley | 2022 |
| Alpha Vital Ltd | Romford | 2021 |
| Alpha Wellbeing Associates Limited | Cheltenham | 2010 |
| Alpha Windmill (Bedale) Limited | Middlesbrough | 2015 |
| Alpha Windmill (York) Limited | Middlesbrough | 2015 |
| Alpha Youth UK | Romford | 2010 |
| Alpha(Amt) Ltd | Glasgow | 2023 |
| Alpha-Coscure Medical Limited | Leicester | 2023 |
| Alpha-Dawn Limited | Grays | 2015 |
| Alpha-Focus Consultancy Ltd | Chatham | 2020 |
| Alpha-Grace Healthcare Limited | London | 2025 |
| Alpha-Immunotech Healthcare Ltd | Droitwich | 2024 |
| Alpha-Imperial Private Ltd | Leicester | 2014 |
| Alpha-Liberi Healthcare Ltd | Droitwich | 2023 |
| Alpha-Med (Medical & Surgical) Limited | Deeside | 1991 |
| Alpha-Rains Care Ltd | Buckingham | 2023 |
| Alphabash Ltd | Porthcawl | 2024 |
| Alphabet Care Limited | Liverpool | 2025 |
| Alphabet Daycare Limited | Isleworth | 2024 |
| Alphabet House Day Nurseries Limited | Northampton | 2003 |
| Alphabet Social Work Ltd | Hemel Hempstead | 2015 |
| Alphabet Speech and Language Therapy Ltd | Thornton Heath | 2019 |
| Alphabet Systems Ltd | London | 2023 |
| Alphabet Village Limited | Bellshill | 2004 |