| Alverstoke Chiropractic Limited | Gosport | 2017 |
| Alverstoke Dental Spa Ltd | Gosport | 2025 |
| Alverstoke Podiatry Limited | Fareham | 2008 |
| Alverty Odala Ltd | Leicester | 2016 |
| Alves Icare Ltd | Peterborough | 2018 |
| Alves Teixeira Ltd | London | 2010 |
| Alvi & Alvi Healthcare Limited | Ilford | 2021 |
| Alvi Health Limited | Glasgow | 2014 |
| Alvi Locum Services Ltd | Birmingham | 2018 |
| Alvi Orthopaedics Limited | Sale | 2023 |
| Alvi Smiles Ltd | Birmingham | 2026 |
| Alvial-Palavicino Medical Consulting Ltd | Glasgow | 2026 |
| ALVICS14 Limited | London | 2018 |
| Alvin & Alma Ltd | Watford | 2022 |
| Alvin Care Services UK Limited | West Midlands | 2009 |
| Alvina's Foodbank Ltd | London | 2022 |
| Alvindla Ltd | New Malden | 2013 |
| Alvine Ltd | Coventry | 2024 |
| Alvino Limited | Colchester | 2019 |
| Alvisean Ltd | Preston | 2021 |
| Alvony House Limited | North Somerset | 2004 |
| Alvs Opticare Ltd | Leicester | 2024 |
| ALW Health Limited | Great Yarmouth | 2021 |
| Alwahab Foundation | Harrow | 2021 |
| Alwaleed Medical Services Ltd | London | 2018 |
| Alwar (International) Limited | Coventry | 2012 |
| Alward Ltd | Warrington | 2022 |
| Alwasila Mind Matters Limited | Preston | 2024 |
| Always & Beyond Limited | Wokingham | 2024 |
| Always a Pleasure Limited | Selby | 2020 |
| Always B Reporting Ltd | Bungay | 2022 |
| Always BE Happy Limited | Redhill | 2012 |
| Always Beauty Ltd | Epsom | 2021 |
| Always Bespoke Care Northwest Ltd | Rossendale | 2023 |
| Always Caring Bromley Ltd | Bromley | 2009 |
| Always Caring Limited | Gosport | 2024 |
| Always Family Care Ltd | Dagenham | 2021 |
| Always First Ltd | London | 2025 |
| Always Flourishing Care Limited | London | 2023 |
| Always Hear Limited | Batley | 2021 |
| Always Hear West Somerset Ltd | Minehead | 2021 |
| Always Help in Hand Limited | Hounslow | 2009 |
| Always Herd (Slimbridge) CIC | Stonehouse | 2023 |
| Always Herd Ltd | Stonehouse | 2022 |
| Always Here Care Limited | Huddersfield | 2024 |
| Always Here for YOU Ltd | Leicester | 2018 |
| Always Ozzy Ltd | Prenton | 2015 |
| Always Precious Ltd | Bristol | 2011 |
| Always Take Care Limited | Stamford | 2010 |
| Always There Care Ltd | Warrington | 2025 |
| Always There Domiciliary Care Limited | Epping | 2019 |
| Always Together Homecare Ltd | Bedford | 2024 |
| Always Upwards Ltd | London | 2014 |
| Always Wanted to CIC | Bury | 2024 |
| Alwaysup International Ltd | Newbury | 2026 |
| Alwdo Assist Ltd | Erith | 2019 |
| Alweather Limited | Leicester | 2019 |
| Alwin & Alson Healthcare Ltd | Sutton Coldfield | 2026 |
| Alwitry Medicolegal Services Limited | Preston | 2020 |
| Alwood Care Limited | Bath | 2019 |
| Alwood Support Ltd | Bath | 2026 |
| Alwyn Grace Ltd | Shipston-On-Stour | 2022 |
| Alwyn L Parry Limited | Llandudno | 2016 |
| ALX Marketing Limited | Borehamwood | 2021 |
| Alx-Isa Radiology Limited | London | 2026 |
| Alya Medical Services Limited | Ilford | 2013 |
| Alyarmouk Limited | Ipswich | 2014 |
| Alycare Ltd | Peterborough | 2020 |
| Alyeo Company Ltd | Sheffield | 2022 |
| Alyina Limited | Carlisle | 2017 |
| Alyn Healthcare Ltd | Manchester | 2019 |
| Alyn Smile Centre Ltd | Mold | 2026 |
| Alynom Limited | Northampton | 2018 |
| Alyon Cynthia Care Services Ltd | Rugby | 2020 |
| Alyse Medcare Ltd | Andover | 2022 |
| Alysia Caring (Aspen Manor) Limited | London | 2018 |
| Alysia Caring (Oakham) Limited | London | 2018 |
| Alysia Caring (Silver Birch) Limited | London | 2020 |
| Alysia Caring (Stamford) Limited | London | 2017 |
| Alyson House RCH Ltd | Rickmansworth | 2016 |
| Alyson Orthodontics Ltd | Bromsgrove | 2019 |
| Alyssa Healthcare Ltd | Romford | 2026 |
| Alyssam Aesthetics Limited | Staines-Upon-Thames | 2020 |
| Alyssiarose Ltd | London | 2022 |
| Alzahra Limited | Sale | 2008 |
| Alzain Medical Ltd | Cardiff | 2023 |
| Alzerje Medical Ltd | Birmingham | 2022 |
| Alzheimer Scotland - Action on Dementia | Edinburgh | 1994 |
| Alzheimer's & Dementia Support Services | Gravesend | 2017 |
| Alzheimer's Brain Bank UK | Cambridge | 2006 |
| Alzheimer's Foundation for Research Into Alzheimer's Disease | London | 1998 |
| Alzheimer's Research Trading Limited | Cambridge | 1999 |
| Alzheimer's Research UK | Cambridge | 1998 |
| Alzheimer's Society | London | 1987 |
| Alzheimer’S Trust Ltd | London | 2025 |
| AM & CN Ltd | Birmingham | 2021 |
| AM & SLR Associates Ltd | Southgate | 2016 |
| AM Aesthetic Surgery Limited | Leeds | 2015 |
| AM Aesthetics Clinic Ltd | Manchester | 2024 |
| AM Anaesthetic Services Ltd | Mirfield | 2013 |