| A J P Consultancy Ltd | Brentwood | 2001 |
| A J Property Holdings Limited | Poole | 2016 |
| A J R Furniture Limited | Shepton Mallet | 2009 |
| A J Rentals Limited | Normanton | 1990 |
| A J Ross Joinery Limited | Barnsley | 2019 |
| A J Smith Property Ltd | Kirkby In Ashfield | 2020 |
| A J V Security Ltd Ltd | St. Austell | 2025 |
| A K 2014 Ltd | Luton | 2014 |
| A K Contracting Services Limited | Cinderford | 2011 |
| A K Sanders Properties Ltd | Frome | 2016 |
| A Kalm and Klear Mind Ltd | Motherwell | 2020 |
| A L M Transport Limited | London | 2008 |
| A L Plumbing & Heating (Scotland) Limited | Kilmarnock | 2009 |
| A Line Wheel Alignment Limited | Dudley | 2011 |
| A Listair (London) Company Limited | Cambridge | 2003 |
| A Little Big KID Limited | Milton Keynes | 2022 |
| A Little Idea Ltd | London | 2013 |
| A Little Lost Ltd | Wallasey | 2014 |
| A Little Word on Wine Ltd | Bristol | 2024 |
| A M Carpentry and Construction Ltd | Winchester | 2022 |
| A M E Product Development Solutions Ltd | Sheffield | 1997 |
| A M Garden Machinery Limited | London | 2016 |
| A M Group Limited | Norfolk | 1962 |
| A M Projects Limited | Guildford | 2003 |
| A M Properties (Hale) Limited | Altrincham | 1998 |
| A M Taxis Limited | Edinburgh | 1997 |
| A Maclachlan Associates Ltd. | Perth | 2018 |
| A Mayfair Company Limited | London | 2012 |
| A Mcgillivray Electrical and Refrigeration Ltd. | Broxburn | 2012 |
| A Mindful Practice Limited | Manchester | 2025 |
| A Mindscape Consultancy Ltd | London | 2025 |
| A N D Contracts Limited | Market Drayton | 2010 |
| A NU YU Ltd | Bristol | 2009 |
| A OCH B Holding Limited | London | 2025 |
| A P L Construction (Holdings) Ltd | Wishaw | 2020 |
| A P L Plant Hire Ltd | Wishaw | 2020 |
| A P L Self Storage Ltd | Wishaw | 2020 |
| A P Pavers Limited | Uttoxeter | 2004 |
| A P Swift Limited | Cleckheaton | 1998 |
| A Pawsitive Step Ltd. | Kington | 2021 |
| A Place for Everything Limited | Colwyn Bay | 2008 |
| A Plus Aluminium Limited | Watford | 2007 |
| A Pountain Limited | Uttoxeter | 2009 |
| A Priceless Vision Ltd | Romford | 2012 |
| A R Dury & Co (Nailsea) Ltd | Bristol | 2024 |
| A R Raymond and Co Limited | Heathfield | 2003 |
| A R Technology Limited | London | 1996 |
| A R Tennant Limited | Sheffield | 2003 |
| A Rated Living Limited | Nottingham | 2019 |
| A Rated Ltd | London | 2015 |
| A Red House Ltd | Bury St. Edmunds | 2024 |
| A Relocation Service Ltd | Pershore | 2019 |
| A Ross Holding's Limited | Nuneaton | 2021 |
| A S Atlantic Ltd | Ashford | 2017 |
| A S General Trading Limited | London | 2015 |
| A S Health & Safety Services Limited | South Shields | 2014 |
| A S Metal Recycling Limited | Maidenhead | 2023 |
| A S Properties Services Limited | Pudsey | 2005 |
| A S Wellington Building and Maintenance Limited | Pyle | 2010 |
| A S Wills Limited | Torquay | 2002 |
| A Shade Greener Deal Ltd | Barnsley | 2011 |
| A Shade Greener Distribution Ltd | Barnsley | 2011 |
| A Shade Greener Energy Ltd | Barnsley | 2011 |
| A Sibley Ltd | Ashington | 2018 |
| A Slice of NY Limited | Great Leighs | 2018 |
| A Spanner & Co Limited | Stoke-On-Trent | 2008 |
| A Spare Company Limited | Copmanthorpe | 2015 |
| A Spoonful of Sugar | London | 2012 |
| A Star Autos Limited | Derby | 2019 |
| A Starr Services Limited | St. Ives | 2008 |
| A Stewart Mackay (Developments) Limited | Glasgow | 1987 |
| A T Building Services Limited | Tiverton | 2005 |
| A Tailor's CUT Ltd | Finchley | 2018 |
| A Taste of Arabia Limited | Sheffield | 2024 |
| A Taste of Lakeland Limited | Cumbria | 2003 |
| A Taste of Space Partners Limited | London | 2017 |
| A Taste of Thai Ltd | Bristol | 2024 |
| A Time a Place a Story Limited | Pinner | 2019 |
| A Tinchy BIT of Sparkle Ltd | Leeds | 2022 |
| A to Z Financial Planning Limited | Chorley | 2006 |
| A to Z Financial Services (UK) Ltd | Thornton Heath | 2003 |
| A to Z Pharmacare Ltd | Birmingham | 2011 |
| A to Z Wellness Coaching Limited | Newark | 2024 |
| A Touch of Musicality Ltd | Godalming | 2017 |
| A Ucyigit Ltd | Bromley | 2021 |
| A V Access Limited | Bridgnorth | 2015 |
| A V Peterson & Sons Limited | Cwmbran | 2001 |
| A Vital Life Limited | Oxford | 2020 |
| A W D Energy Limited | Peterborough | 2010 |
| A W Elliott & Co Limited | Mansfield | 2010 |
| A W Gregory & Company Limited | Sevenoaks | 2005 |
| A W Installations Limited | Bedford | 2001 |
| A W Luscombe Limited | Totnes | 2011 |
| A W S Consultants Limited | Coventry | 1999 |
| A Walker Ltd | Eccles | 2022 |
| A Whitehead Ltd | Lancaster | 2005 |
| A Williams Plumbing Ltd | Epsom | 2021 |
| A Womb With a View Ltd | Bedford | 2023 |
| A Wood Idea Limited | Hexham | 2013 |
| A World Apart Ltd | Huddersfield | 2022 |