| A Kounting Ltd | Salisbury | 2015 |
| A L Associate Surveyors Ltd | Swindon | 2015 |
| A L B Signwriters Limited | Bedford | 2007 |
| A L C Contracts Ltd | Airdrie | 2012 |
| A L Charles Limited | London | 2019 |
| A L Construction Management Limited | Nottingham | 2013 |
| A L Dalton Holdings Limited | Industrial Estate | 1999 |
| A L Dickson Consulting Limited | Dundee | 2026 |
| A L Engineering Works Ltd | Portsmouth | 2019 |
| A L Hawkins Consulting Limited | Ashford | 2011 |
| A L I Building Design Limited | Caernarfon | 2004 |
| A L James Engineering Ltd | Fishguard | 2018 |
| A L Law Associates Limited | Harrow | 2011 |
| A L Lemon Consulting Limited | Southampton | 2023 |
| A L Lewis Ltd | Margate | 2019 |
| A L M S Limited | Cambridgeshire | 2006 |
| A L Management Limited | Haslemere | 2007 |
| A L Marketing Communications Limited | Halstead | 1993 |
| A L N Green Design Limited | London | 2026 |
| A L Simpkin (Group) Limited | South Yorkshire | 2000 |
| A L Surveying Services Limited | Nuneaton | 2005 |
| A L Utilities Limited | Pontefract | 2020 |
| A L Waterson Ltd | Billingham | 2025 |
| A LA Carte Consulting Limited | Bromley | 1999 |
| A LA Carte Marketing Consulting Ltd | London | 2025 |
| A LA Manana Ltd | Bournemouth | 2007 |
| A Laidlaw Accountants Limited | Huddersfield | 2014 |
| A Lally Ltd | Rochester | 2018 |
| A Lane Management Limited | Marlow | 2007 |
| A Laney Eica Consulting Ltd | Worsley | 2026 |
| A Lang Consulting Limited | Edinburgh | 2019 |
| A Langley Construction Services Ltd | Wakefield | 2024 |
| A Lass & a LAD Ltd | London | 2024 |
| A Latter & Company (Manchester) Limited | London | 2002 |
| A Lawler & Co Limited | Sunbury-On-Thames | 2014 |
| A Lawrence Consulting Ltd | Reading | 2018 |
| A LEE Consultancy Services Ltd | Liverpool | 2022 |
| A Lewis Consultancy Limited | Woodford Green | 2011 |
| A Lhomond Marketing Ltd | High Wycombe | 2024 |
| A Liberty Life Ltd | Morpeth | 2006 |
| A Life More Mindful Ltd | Edgware | 2018 |
| A Life Remembered Ltd | Southport | 2014 |
| A Lifetime Advice Ltd | Birmingham | 2023 |
| A List Accountants Ltd | London | 2020 |
| A List Ventures Ltd | London | 2018 |
| A Liston Ltd | Glasgow, | 2023 |
| A Little Bird London Limited | London | 2021 |
| A Little Birdie Ltd | Sheffield | 2015 |
| A Little BIT Endless Limited | Barnsley | 2015 |
| A Little BIT of Marketing Ltd | | 2003 |
| A Little Box of Memories Limited | Stowmarket | 2008 |
| A Little Green Interior Designs Ltd | Leeds | 2023 |
| A Little Leaf Ltd | High Wycombe | 2024 |
| A Little Light Design Ltd | London | 2014 |
| A Little Light Ltd | Rotherfield | 2020 |
| A Little Louder Ltd | London | 2021 |
| A Little Something Limited | Worcester | 2025 |
| A Little Voice Limited | London | 2010 |
| A Little Zest Limited | Bognor Regis | 2011 |
| A Littler Accountancy Services Limited | Hightown | 2019 |
| A Living Idea Ltd | Walsall | 2023 |
| A Livingston Services Limited | Welling | 2014 |
| A LJO Engineering Ltd | Liverpool | 2011 |
| A Llewellyn J Limited | Swansea | 1999 |
| A Lock & Co Limited | York | 2006 |
| A Logical Limited | Derby | 2005 |
| A Lopes Audiology Limited | Hounslow | 2022 |
| A Love for Brands Ltd | London | 2018 |
| A Lynn Engineering Limited | Wisbech | 2024 |
| A M & a Consulting Limited | Bushey | 2015 |
| A M (North-East) Ltd | Newcastle Upon Tyne | 2021 |
| A M (Sussex) Limited | East Sussex | 2005 |
| A M Abed Limited | Feltham | 2006 |
| A M Accounting & Book-Keeping Limited | Kingston Upon Thames | 2013 |
| A M Accounting Limited | Bridgwater | 2014 |
| A M Agencies Ltd | Belfast | 2008 |
| A M Ahmad Ltd | Knaresborough | 2020 |
| A M Architectural Consultancy Ltd | Ferndown | 2014 |
| A M Architectural Studios Ltd | Oldbury | 2022 |
| A M Architecture Limited | Harpenden | 2008 |
| A M Automation Services Ltd | Romford | 2019 |
| A M B S Consultancy Limited | London | 2004 |
| A M Banks Ltd | London | 2014 |
| A M Blake Ltd | Norwich | 2009 |
| A M Business Consultants Ltd | Porth | 2020 |
| A M Cheshire Ltd | Manchester | 2019 |
| A M Clayton Limited | Warrington | 1999 |
| A M Combi-Care Ltd | Peterborough | 2013 |
| A M Consultancy Services (UK) Limited | Brighouse | 2012 |
| A M Consultants London Ltd | London | 2013 |
| A M E Group Ltd | Sheffield | 2000 |
| A M Financial Solutions Limited | Wallington | 2010 |
| A M Flight Limited | Chester | 2013 |
| A M Fraser Ltd | London | 2024 |
| A M GAS Solutions Limited | Watford | 2017 |
| A M Gillett and Associates Limited | Leeds | 2011 |
| A M Greaves Accounting Ltd | Sheffield | 2026 |
| A M Hire Limited | Cramlington | 1992 |
| A M Holroyd Ltd | Manchester | 2016 |
| A M J Promotions Limited | | 2002 |