| Adur Home Care Ltd | Lancing | 2023 |
| Aduragbemi Limited | Dartford | 2020 |
| Adurey Ltd | London | 2022 |
| Aduro Ltd | Rochdale | 2015 |
| Adusab Limited | London | 2023 |
| Adusco Limited | Flint | 2022 |
| Adusky Comfort Living Limited | Maidstone | 2023 |
| Adusoby Ltd | Ipswich | 2021 |
| ADV Healthcare Limited | Bridlington | 2022 |
| Advancare Therapies Ltd | London | 2023 |
| Advance Advocacy and Non-Violence Community Education | London | 2000 |
| Advance Aesthetics Ltd | Milton Keynes | 2014 |
| Advance Biotech Laboratories Ltd | London | 2018 |
| Advance Brighter Futures | | 2000 |
| Advance Cardiac Solutions Limited | Birmingham | 2010 |
| Advance Care and Support Services Limited | Cheltenham | 2018 |
| Advance Care Communities Ltd | London | 2022 |
| Advance Care Consultancy Ltd | Colchester | 2016 |
| Advance Care Solutions Ltd | Haywards Heath | 2022 |
| Advance Careprovider Limited | Essex | 2023 |
| Advance Choice Services Ltd | Bicester | 2022 |
| Advance Clinical Practice Solutions Ltd | Sheffield | 2025 |
| Advance Clinical Services Ltd | Bradford | 2024 |
| Advance Clinician Solutions Ltd | Margate | 2021 |
| Advance Continuing Education London Ltd | London | 2011 |
| Advance Dental Care Limited | Barry | 2007 |
| Advance Dental Care Swindon Ltd | Coventry | 2013 |
| Advance Dental Clinic Limited | Wakefield | 2009 |
| Advance Dental Health Limited | London | 2011 |
| Advance Dental Ltd | Hounslow | 2020 |
| Advance Dental Suite Limited | Nottingham | 2017 |
| Advance Dia-Bese Care (UK) Limited | Sunbury-On-Thames | 2009 |
| Advance Exclusive Services Ltd | Croydon | 2024 |
| Advance Fitness Studio Ltd | Chelmsford | 2019 |
| Advance Health Care UK Ltd | Nottingham | 2008 |
| Advance Health Consulting Limited | Exeter | 2021 |
| Advance Health Limited | Southend-On-Sea | 2026 |
| Advance Health North Ltd | Manchester | 2016 |
| Advance Health Practice Ltd | Dewsbury | 2022 |
| Advance Healthcare Logistics Limited | Canterbury | 2010 |
| Advance Healthcare Services Ltd | London | 2023 |
| Advance Home Help & Support Services Ltd | Waltham Cross | 2019 |
| Advance Intervention Practice CIC | Stratford-Upon-Avon | 2026 |
| Advance ISW Ltd | Luton | 2017 |
| Advance Laparoscopic Surgery Ltd | Swansea | 2011 |
| Advance Medic Services Ltd | Harrow | 2019 |
| Advance Medica Ltd | Burnley | 2013 |
| Advance Medical Africa Ltd | Leatherhead | 2021 |
| Advance Medical Care Limited | Birmingham | 2026 |
| Advance Medical Case Management Limited | Manchester | 2011 |
| Advance Medical Consultancy Limited | Wimborne | 2023 |
| Advance Medical Services Limited | Portsmouth | 2011 |
| Advance Medical Transport Services Limited | Sittingbourne | 2016 |
| Advance Mental Health Ltd | Mirfield | 2020 |
| Advance Nutrition Limited | Reading | 2011 |
| Advance Occupational Therapy Limited | Whalley | 2017 |
| Advance Orthopaedic Care Limited | Littlehampton | 2011 |
| Advance Perspectives Ltd | London | 2018 |
| Advance Pharmacies Ltd | Walsall | 1998 |
| Advance Physio Solutions Ltd | Sunderland | 2003 |
| Advance Physiotherapy Group Ltd | Solihull | 2020 |
| Advance Physiotherapy Limited | Great Dunmow | 2024 |
| Advance Plastic Surgery Limited | Pinner | 2024 |
| Advance Practice Consulting Limited | Bradford | 2025 |
| Advance Psychology Ltd | Uxbridge | 2021 |
| Advance RX Limited | Coventry | 2024 |
| Advance Social Care Limited | Burnley | 2015 |
| Advance Social Care Residential Service Limited | Burnley | 2024 |
| Advance Social Care Services Ltd | London | 2015 |
| Advance Spinal Care Limited | Staines-Upon-Thames | 2026 |
| Advance SRM Therapies Ltd | Waterlooville | 2020 |
| Advance Support & Enabling Services Ltd | St Austell | 2026 |
| Advance Tests Ltd | Uckfield | 2024 |
| Advance Ultrasound Direct Ltd | Bexleyheath | 2022 |
| Advanced & Basic Medical Services Ltd | Rayleigh | 2018 |
| Advanced Acupuncture Ltd | Wakefield | 2025 |
| Advanced Adhesive Technologies Limited | London | 2006 |
| Advanced Adolescent Care Solutions Limited | Worksop | 2018 |
| Advanced Adolescent Support Limited | Worksop | 2018 |
| Advanced Adult Care Services Ltd | Luton | 2015 |
| Advanced Aesthetics and Implants Limited | London | 2020 |
| Advanced Aesthetics and Wellness Clinic Ltd | London | 2022 |
| Advanced Aesthetics DR Ewelina Emilianowicz Ltd | Workington | 2024 |
| Advanced Aesthetics London Ltd | London | 2022 |
| Advanced Aesthetics Ltd | Colchester | 2025 |
| Advanced Aesthetics Reading Ltd | Reading | 2015 |
| Advanced Assessment & Solutions Limited | Barnsley | 2021 |
| Advanced Basics 2.0 Ltd | Manchester | 2023 |
| Advanced Beauty Healthcare Ltd | London | 2024 |
| Advanced Beauty Medical Clinics Limited | Finchley | 2024 |
| Advanced Beauty Medical Ltd | London | 2024 |
| Advanced Biomechanics Consultancy Limited | Bournemouth | 2017 |
| Advanced Body Coaching Ltd | Keston | 2022 |
| Advanced Breast Clinical Diagnostics Ltd. | Birmingham | 2018 |
| Advanced Cancer Screening Limited | London | 2019 |
| Advanced Cardiac Diagnostics Ltd | Newry | 2026 |
| Advanced Cardiac Surgery Ltd | Newcastle | 2016 |
| Advanced Cardiology Care Ltd | Southampton | 2022 |
| Advanced Cardiology Ltd | Manchester | 2019 |
| Advanced Cardiovascular Care Ltd | Milton Keynes | 2024 |