| A.L.K. Designs Limited | Crawley | 2003 |
| A.L.L. Imagineering Ltd | Abingdon | 2025 |
| A.L.T.E. Maintenance Services Limited | Wellingborough | 2006 |
| A.M Building Solutions Ltd. | Blackpool | 2018 |
| A.M Psychotherapy Services Limited | 33 Furnivial Street | 2020 |
| A.M. Annison Maintenance Services Ltd | Derby | 2017 |
| A.M. Dental Supplies Limited | Hertfordshire | 1994 |
| A.M. Expert Services Limited | Sunderland | 2023 |
| A.M. Gooch Limited | Ashford | 2004 |
| A.M. Specialist Skin Therapies & Beauty Training Academy Ltd | Aberdeen | 2021 |
| A.M. Wynter Xpress Limited | Leigh-On-Sea | 2009 |
| A.M.A. Hair Design Ltd. | Pitlochry | 2005 |
| A.M.Dickie & Sons Limited | Manchester | 1924 |
| A.M.S. (GB) Limited | Hornchurch | 2003 |
| A.Marcus Nutrition Ltd | Greater London | 2026 |
| A.Middleton Limited | Yarm | 2023 |
| A.N Car Wash Ltd | Potters Bar | 2020 |
| A.N Coropration Limited | Burgess Hill | 2014 |
| A.N. Contract Services Limited | London | 1990 |
| A.N.A Mentoring Ltd | Romford | 2024 |
| A.N.A's (UK) Ltd | | 2007 |
| A.N.D Domestics Limited | Chingford | 2013 |
| A.N.J Entertainment Limited | Middlesbrough | 2023 |
| A.N.N. Beauty Services Ltd | Bradford | 2023 |
| A.Nt Drips Therapy & Aesthetics Ltd | Southend-On-Sea | 2025 |
| A.O.G. Paintcare Ltd | Chester | 2023 |
| A.O.K Lifestyle Management Ltd | London | 2025 |
| A.P Mcdonald Funeral Services Ltd | Devizes | 2018 |
| A.P. Robinson Investments | Grimsby | 2010 |
| A.P.A.G.B.I. Limited | Sheffield | 2006 |
| A.P.D. Fitness Services Ltd | Ossett | 2024 |
| A.P.D.J. Limited | East Sussex | 1998 |
| A.P.T. Services (Dorset) Ltd | Broadstone | 2018 |
| A.R Nails Ltd | Sudbury | 2026 |
| A.R. Beckford Trading Limited | Leigh-On-Sea | 2007 |
| A.R. Consultants Limited | Harrow | 1991 |
| A.R. Tailors & DRY Cleaners Limited | | 1991 |
| A.R.Adams (Funeral Directors) Limited | Essex | 1950 |
| A.R.B Signs Limited | St. Austell | 2018 |
| A.R.C. Funeral Contractors Limited | Yateley | 2010 |
| A.R.D. Business Limited | London | 2012 |
| A.R.I.E.L Xpress Ltd | Bolton | 2019 |
| A.R.J Anlaby Ltd | Hull | 2013 |
| A.R.Janicki Ltd. | Bicester | 2019 |
| A.R.K Fencing and Gates Ltd | Alton | 2017 |
| A.R.K. Lasting Powers & Wills Ltd | Stevenage | 2018 |
| A.R.L. Limited | Dumbarton | 1994 |
| A.R.M. Enterprises (UK) Limited | Croydon | 2012 |
| A.R.T Clinic Limited | Keighley | 2026 |
| A.R.T. Safe Storage Archive Ltd. | Wembley | 2019 |
| A.R.T. Training and Consultancy Services Ltd | Wembley | 2014 |
| A.R.Y. Club Ltd | London | 2026 |
| A.Round the Town Ltd | Hounslow | 2015 |
| A.S Anderson Ltd | Brighton | 2015 |
| A.S Beauty Clinic Limited | Ipswich | 2024 |
| A.S Beauty Limited | Preston | 2017 |
| A.S Cleaning Group Limited | Chatham | 2020 |
| A.S Cleaning Services Ltd | London | 2014 |
| A.S Delivers Ltd | London | 2012 |
| A.S Management and Consultancy Services Ltd | Burton On Trent | 2023 |
| A.S. Home Improvements Limited | Stoke-On-Trent | 2013 |
| A.S. Infinity Optical Ltd | Hayes | 2017 |
| A.S. International Asset Management Limited | Ashford | 2020 |
| A.S. Tractors (Scotland) Ltd | Oldmeldrum | 2016 |
| A.S.A.P. Domestic Appliance Services Limited | Buckinghamshire | 2003 |
| A.S.E. Computer Services Ltd | Harrogate | 2003 |
| A.S.K Tattoo & Piercing Ltd | London | 2018 |
| A.S.L. Hairdressing Limited | Cheadle | 2020 |
| A.S.L. Hida Valeting Limited | Kettering | 2013 |
| A.S.M. Electric Cooker Repairs Ltd | Hove | 2004 |
| A.Shiro Ltd | Brighton | 2026 |
| A.Smith(Southwark)Limited | Surrey | 1955 |
| A.T Nails Spa Southampton Ltd | Southampton | 2023 |
| A.T. and T. Rentals Limited | Armagh | 1988 |
| A.T. Kimberley (Holdings) Limited | Oxfordshire | 1985 |
| A.T.H. Alden Limited | London | 1975 |
| A.V Nails Egham Ltd | Egham | 2019 |
| A.V.A. Services Limited | Crawley | 2003 |
| A.W. Advertising & Recruitment Ltd | Ilford | 2016 |
| A.W. Lymn Memorial Parks Limited | Nottingham | 2024 |
| A.W. Lymn the Funeral Planning Service Limited | Nottingham | 2017 |
| A.W.Lymn Limited | Nottingham | 1958 |
| A.W.Lymn the Family Funeral Service Limited | Nottingham | 1984 |
| A.W.ROBEY(1965)LIMITED | Derby | 1965 |
| A.W.Wheadon Limited | Crawley Down | 1961 |
| A.Welch & Sons Limited | Kent | 1948 |
| A.Yusaf Commerce Limited | Manchester | 2021 |
| A1 Abodes Ltd | Birmingham | 2023 |
| A1 Ace Transport Services Ltd. | Loughborough | 2008 |
| A1 Appliances Falmouth Ltd | Helston | 2025 |
| A1 Art Limited | Buckhurst Hill | 2018 |
| A1 Astroturf Ltd | Canvey Island | 2020 |
| A1 Barber (NW) Ltd | Manchester | 2024 |
| A1 Barber (Seaton Delaval) Ltd | Whitley Bay | 2024 |
| A1 Barber (Sidcup) Limited | Sidcup | 2019 |
| A1 Barber ED Ltd | Edinburgh | 2025 |
| A1 Barber Edinburgh Ltd | Bathgate | 2025 |
| A1 Barber Newark Ltd | Newark | 2025 |
| A1 Barber Orfords Ltd | Warrington | 2025 |
| A1 Barber Shop Ltd | Swindon | 2021 |