| A Srid Ltd | London | 2022 |
| A Star Aesthetics (Leeds) Ltd | Wakefield | 2019 |
| A Star Aesthetics Limited | Huddersfield | 2018 |
| A Star Care Agency Ltd | London | 2023 |
| A Star Care Services (Lichfield, Tamworth & Sutton Coldfield) Ltd | Lichfield | 2025 |
| A Star Care Services Bromsgrove and Redditch Limited | Bromsgrove | 2025 |
| A Star Care Services Limited | Solihull | 2018 |
| A Star Childminding Ltd | Barnet | 2024 |
| A Star Clinic Ltd | Leicester | 2024 |
| A Star Health Ltd | Newcastle Upon Tyne | 2025 |
| A Star Inc Ltd | London | 2014 |
| A Star Smile Limited | Stroud | 2019 |
| A Star Support Services Ltd | Holywell | 2014 |
| A Star Tuition North West Ltd | Oldham | 2013 |
| A Step Above Ltd | Manchester | 2023 |
| A Step Ahead Podiatry Ltd | Glasgow | 2017 |
| A Step Beyond Ltd | Coulsdon | 2019 |
| A Step for Change Ltd | Wirral | 2015 |
| A Stogiera Ltd | Gateshead | 2016 |
| A Swile Limited | London | 2016 |
| A Symphony Limited | Huddersfield | 2025 |
| A T & J B Roberts Limited | Darwen | 2004 |
| A T Best Ventures Ltd | London | 2020 |
| A T Chibhamu Limited | Bristol | 2016 |
| A T Dental Excellence Ltd | London | 2016 |
| A T J Edwards Ltd. | Birmingham | 2008 |
| A T Pharma Solutions Limited | Merthyr Tydfil | 2015 |
| A T Physio Limited | Wetherby | 2013 |
| A T Wilson Limited | Manchester | 2010 |
| A Tahir Eyecare Limited | Rochdale | 2015 |
| A Tajammal Ltd | Blackburn | 2023 |
| A Tate Ltd | Cardiff | 2026 |
| A Taylor Oncology Ltd | Guildford | 2019 |
| A Team (Swindon) Ltd | Swindon | 2018 |
| A Tempo Group Ltd | Cambridge | 2022 |
| A Time 2 Talk Community Interest Company | North Shields | 2016 |
| A Time 4 YOU Psychological Services C.I.C. | Redcar | 2010 |
| A Time to Heal Ltd | London | 2021 |
| A Tiwary Ltd | Cambridge | 2022 |
| A to 1 Limited | Cardiff | 2001 |
| A to Z Aesthetics Ltd | Central London | 2018 |
| A to Z Care Limited | Bradford | 2025 |
| A to Z Childminding Ltd | Leeds | 2022 |
| A to Z Extra Business Solution Ltd | London | 2016 |
| A to Z Health Services Limited | London | 2020 |
| A to Z Healthcare Services Limited | Birmingham | 2019 |
| A to Z Locums Ltd | Altrincham | 2019 |
| A to Z Medical Ltd | London | 2014 |
| A to Z Nursing Ltd | Welling | 2014 |
| A to Z Psychological Therapies Ltd | Bury St. Edmunds | 2023 |
| A to Z Solutions Centre Ltd | Heywood | 2012 |
| A to Z Trading & Services Ltd | London | 2014 |
| A to Z Wellness Limited | Birmingham | 2024 |
| A Tomlinson Medical Ltd | Preston | 2021 |
| A Touch of Asia Ltd | Brighton | 2019 |
| A Touch of Beauty Limited | Lincoln | 2019 |
| A Touch of Gentleness CIC | Hailsham | 2021 |
| A Touch of Grace Limited | Basingstoke | 2022 |
| A Touch of Healing Limited | Bristol | 2008 |
| A Touch of Heaven Massage Limited | Croydon | 2019 |
| A Touch of Lavender Reflexology Ltd | Ashford | 2025 |
| A Touch of YOU by Katie Q Ltd | Malvern | 2022 |
| A Transformative Space Ltd | London | 2025 |
| A U Medical Services Limited | Stevenage | 2012 |
| A U R Locum Services Limited | Bradford | 2015 |
| A U Rehman Limited | Birmingham | 2009 |
| A V Capital UK Limited | Ilford | 2013 |
| A V L Healthcare Limited | Birmingham | 2014 |
| A V Scans & Diagnostics Limited | Bristol | 2015 |
| A V Singh Limited | Chelmsford | 2020 |
| A VE Healthcare Ltd | London | 2023 |
| A Village CIC | Gillingham | 2026 |
| A Vohra Pharma Ltd | Leicester | 2025 |
| A W Abrar Ltd | Middlesbrough | 2021 |
| A W Bennett BDS Limited | Droylsden | 2015 |
| A W Care Services Ltd | London | 2023 |
| A W Jasra Private Limited | Warrington | 2023 |
| A W Johnson Ltd | Oxford | 2016 |
| A W Medical Services Limited | Sittingbourne | 2018 |
| A Wadsworth Limited | Bristol | 2012 |
| A Wake While You’Re Still Awake Ltd | Uxbridge | 2025 |
| A Warritay Childcare Ltd | London | 2026 |
| A Watts & Partners Limited | Exeter | 2022 |
| A Way OUT | Stockton On Tees | 2007 |
| A Weigh With Words Ltd | Pembroke Dock | 2023 |
| A Well Woman Network UK C.I.C. | Milton Keynes | 2017 |
| A Welsh Ltd | Enniskillen | 2021 |
| A West Urology Ltd | London | 2023 |
| A Wilderness Way Group Limited | Penrith | 2020 |
| A Wilderness Way Limited | Penrith | 2006 |
| A Williams Medical Services Limited | Leicester | 2014 |
| A Wise Decision Again Ltd | Doncaster | 2023 |
| A Woodcock Ltd | Wilmslow | 2013 |
| A World Alive Ltd | London | 2020 |
| A World of Hands | Brighton | 2016 |
| A Y Consultants Ltd | Bedford | 2019 |
| A Y Pinnacles Ltd | Bromley | 2021 |
| A Year IS Going to Pass Anyway Limited | Hull | 2017 |
| A Year of Small Changes Ltd | Glasgow | 2019 |
| A Yellow Boat Limited | London | 2023 |