| A J Reid Consulting Ltd | Shepton Mallet | 2023 |
| A J Roberts Surveying Limited | Doncaster | 2020 |
| A J Rolfe Limited | Waltham Abbey | 2021 |
| A J S Architecture Ltd | Newmarket | 2017 |
| A J S Computers Limited | Mayland | 1992 |
| A J S Management Consultancy Limited | Altrincham | 2000 |
| A J Safer Food Services Ltd | Launceston | 2025 |
| A J Sandiford Ltd | Mottisfont | 2024 |
| A J Shone & Co Limited | Gillingham | 2011 |
| A J Sinnett Limited | Solihull | 2020 |
| A J Solway Limited | Leeds | 2005 |
| A J Spittles Ltd | East Claydon | 2012 |
| A J Sullivan Limited | Bedford | 2015 |
| A J Sykes Consultancy Limited | Wakefield | 2018 |
| A J Symonds Ltd | Brecon | 2015 |
| A J T Bookkeeping Limited | Fareham | 2016 |
| A J Tensile Limited | Bridgwater | 2019 |
| A J Thornton Consultancy Ltd | Wakefield | 2017 |
| A J Todd Ltd | Putney | 2009 |
| A J Training Solutions Ltd | Gateshead | 2018 |
| A J Turner (Devon) Limited | Fairford | 2013 |
| A J Veterinary Services Limited | Essex | 2001 |
| A J W C (Cheshire) Limited | Cheshire | 2004 |
| A J W Ventures Limited | Witham | 2020 |
| A J Walsh FM Ltd | Bishop'S Stortford | 2021 |
| A J Walton Architecture Limited | North Shields | 2018 |
| A J Walton Surveying Limited | Whitley Bay | 2015 |
| A J Webb Energy Consultancy Ltd | Berkhamsted | 2024 |
| A J West Decorating Services Limited | Bedworth | 2003 |
| A J Westbrook Engineering Ltd | Huntingdon | 2026 |
| A J Wheeler Limited | Portsmouth | 2005 |
| A J Whitham Energy Services Limited | Barnsley | 2019 |
| A J Wilcock PTY Limited | Birmingham | 2008 |
| A J Williams Solutions Limited | Cheltenham | 2007 |
| A J Williamson Ltd | Manchester | 2018 |
| A J Wrenn Consultancy Limited | Manchester | 2025 |
| A J Wright Projects Ltd | London | 2024 |
| A Jackson Accountants Limited | Durham | 2026 |
| A Jackson Consultancy (Scotland) Ltd | Montrose | 2024 |
| A Jackson Developments UK Ltd | Selby | 2021 |
| A Jackson Solutions Limited | London | 2008 |
| A Jacunska Ltd | London | 2026 |
| A James Mrcvs Limited | Bedworth | 2025 |
| A Jenkins Education Consultants Limited | Solihull | 2023 |
| A JOB in Knock Limited | Aberdeen | 2006 |
| A Johnston Consultancy Limited | Stockton-On-Tees | 2025 |
| A Jolly Consulting Ltd | London | 2016 |
| A Jones Life Ltd | London | 2023 |
| A Jones Productions Ltd | Cinderford | 2022 |
| A Jones-Davies Ltd | London | 2025 |
| A Joseph Business Innovations Limited | London | 1994 |
| A Joseph Consultancy Services Ltd | Peterborough | 2015 |
| A Jude Heating and GAS Solutions Ltd | Formby | 2026 |
| A K Accountancy Ltd | Bristol | 2003 |
| A K Accounting Solutions Limited | Farnborough | 2012 |
| A K Architecture Ltd | Bristol | 2017 |
| A K B Group Limited | Birmingham | 2015 |
| A K Bespoke Ltd | Barnsley | 2023 |
| A K Broyd Consultancy Limited | London | 2022 |
| A K Butler Limited | Sittingbourne | 2015 |
| A K Christie Ltd | Irvine | 2013 |
| A K Design (Scotland) Ltd | Nemphlar | 2002 |
| A K Distribution Ltd | West Sussex | 2007 |
| A K Duncan (2008) Ltd | Stourbridge | 2008 |
| A K E Tax & Accountancy Ltd | Hoddesdon | 2012 |
| A K Harriott Immigration Lawyers Ltd | London | 2019 |
| A K Improvement Limited | Halstead | 2013 |
| A K Inspections Limited | Newcastle Under Lyme | 2010 |
| A K Manchester Limited | Oldham | 2007 |
| A K Mechanical Ltd | Burnley | 2023 |
| A K Media Services Limited | Stourbridge | 2025 |
| A K Minn Ltd | Birmingham | 2023 |
| A K Morris Consulting Ltd | Holmfirth | 2008 |
| A K Multivent Ltd | Leyburn | 2024 |
| A K N Consulting Ltd | Shoreham-By-Sea | 2014 |
| A K P Tax Advisory Services Limited | Northampton | 2010 |
| A K Papadamou & Co Limited | Sutton Coldfield | 2017 |
| A K Pinnock Limited | Croyde | 2011 |
| A K R Recycling Limited | Shrewsbury | 2010 |
| A K Refrigeration Limited | Driffield | 2006 |
| A K Sangar Consulting Limited | Lytham St.Annes | 2018 |
| A K Signalling Ltd | Eastleigh | 2017 |
| A K Smart Repairs Limited | Bracknell | 2018 |
| A Kainth Consultancy Limited | Alderley Edge | 2013 |
| A Kakavand Ltd | London | 2021 |
| A Kanungo Consulting Limited | London | 2021 |
| A Karimi Limited | Maldon | 2016 |
| A KAY Forestry Ltd | Dudley | 2024 |
| A Keen Design Co Ltd | Stafford | 2016 |
| A Kelly Consultancy Limited | Newcastle Upon Tyne | 2013 |
| A Kelly Consulting Limited | Hatfield | 2021 |
| A Kemp & Co Ltd | Thame | 2024 |
| A Kerr Performance Ltd | Glasgow | 2026 |
| A Kiani Consultants Ltd | Hounslow | 2020 |
| A Kind Icon Limited | Doncaster | 2026 |
| A Kind Life Ltd | Edinburgh | 2020 |
| A Kirby Engineering Limited | Wisbech | 2019 |
| A Knight Communications Ltd | London | 2025 |
| A Kotak Management Limited | Kingsbury | 2018 |
| A Kotecha Ltd | Guildford | 2019 |