| A Evans Landscaping Limited | Nottingham | 2003 |
| A Event Hire Limited | Coventry | 2024 |
| A Exclusive Hire Ltd | Bradford | 2018 |
| A Express Services Limited | Rugby | 2017 |
| A EYE Security Limited | Burntwood | 2026 |
| A EYE Security Services Ltd | Bradford | 2026 |
| A EYE Solutions Limited | Poole | 2025 |
| A F & E F Limited | York | 1999 |
| A F Build Services Ltd | Leigh-On-Sea | 2018 |
| A F Consulting (Northern) Limited | Carnforth | 2009 |
| A F Contractors 2022 Ltd | Leicester | 2018 |
| A F Drivers Limited | Romsey | 2023 |
| A F Gardening Limited | Cardiff | 2022 |
| A F Hall Services Ltd | London | 2021 |
| A F Howland Associates Limited | Manchester | 1997 |
| A F Kosher Limited | Manchester | 2014 |
| A F Productions Limited | York | 2017 |
| A F Suter & Company Limited | Chelmsford | 2001 |
| A F T Company Services Limited | Glasgow | 2000 |
| A Fairer Chance C.I.C. | Loughton | 2011 |
| A Fallon and SON Ltd | Clitheroe | 2025 |
| A Fast Cleaning Ltd. | Hemel Hempstead | 2023 |
| A Fine Experience Limited | Newark | 2026 |
| A First Call Plant Hire & Sales Limited | Harrow | 2014 |
| A Fitzy Limited | Brighton | 2024 |
| A Flynn WP Ltd | Billingham | 2024 |
| A Foot in the Door Limited | Oldham | 2013 |
| A for Appointments Limited | Rotherham | 1999 |
| A Force of One Limited | Maesteg | 2014 |
| A Forensics Limited | Liverpool | 2012 |
| A Found World Ltd | Abbots Ripton | 2014 |
| A Franchising Limited | Cardiff | 2019 |
| A Fraser Care 2 Limited | Rickmansworth | 2023 |
| A Fraser Care Limited | Rickmansworth | 2022 |
| A G & G Limited | London | 2000 |
| A G & Sons Tree Services Ltd | Bradford | 2024 |
| A G Bell Security Services Limited | Leven | 2023 |
| A G C Window Systems Ltd | Liverpool | 2010 |
| A G Climate & Energy Ltd | Reading | 2017 |
| A G Commercials Ltd | Cardiff | 2019 |
| A G F Fire Protection Ltd | Stevenage | 2003 |
| A G Facilities Managements Ltd | Manchester | 2021 |
| A G Foster Limited | Coventry | 2017 |
| A G Garden Services Limited | Warwickshire | 2002 |
| A G Gardens Ltd | Lytham St. Annes | 2019 |
| A G H Limited | Smethwick | 2002 |
| A G Hospitality Consultants Limited | Isleworth | 2015 |
| A G Invest Limited | Coventry | 2015 |
| A G Mcewan Ltd | Helensburgh | 2010 |
| A G P Electrical Services Limited | Hereford | 2020 |
| A G P Sussex Limited | Burgess Hill | 2009 |
| A G Rentals Limited | Bradford | 2023 |
| A G S (Alloy Sales) Limited | Oldbury | 2007 |
| A G Treecare Ltd | Loughton | 2010 |
| A Galloway Limited | Grangemouth | 2019 |
| A GAP in the Market Limited | Cheadle | 2018 |
| A Gardiner Engineering Solutions Limited | Warrington | 2015 |
| A Ghaly Property Ltd | Fareham | 2023 |
| A Gift From YOU (Food Bank Support Group ) Ltd | Swadlincote | 2020 |
| A Gill Consultancy Ltd | Southall | 2025 |
| A Glass ACT Window Cleaning Ltd | Southwater, Horsham | 2019 |
| A Glass ACT Window Cleaning Services Limited | Eastbourne | 2020 |
| A Global Language Forum Limited | Stockport | 2008 |
| A Global Recruitment Ltd | London | 2025 |
| A Glow and Shine Ltd | Barking | 2023 |
| A Golden Touch Ltd | Annan | 2025 |
| A Golfing Experience Limited | Chalfont St. Giles | 2009 |
| A Good Decision Limited | Ipswich | 2023 |
| A Good EGG Ltd | Bedford | 2017 |
| A Good Nudge Limited | Wednesbury | 2022 |
| A Good Recruitment Company Limited | London | 2019 |
| A Good Thing CIC | London | 2020 |
| A Grade Administration Limited | London | 2024 |
| A Grade Consultancy Limited | Stanford-Le-Hope | 2024 |
| A Grade Drainage Limited | Northampton | 2020 |
| A Grade Services Ltd | Hayes | 2017 |
| A Gray Estates Limited | Cannock | 2026 |
| A Great British Clean Tech Recycling Company Limited | Aylesbury | 2024 |
| A Green Sweep Ltd | Truro | 2020 |
| A Greener Future Limited | Dorking | 2020 |
| A Greener Vale Ltd | Newport | 2024 |
| A H a Cars Ltd | Luton | 2016 |
| A H a Consultants Limited | Heckmondwike | 2017 |
| A H B Cleaning Limited | St Helens | 2017 |
| A H Coaches Ltd | Peterborough | 2011 |
| A H Eales Limited | Hook | 2002 |
| A H Fire Preventions Limited | London | 2006 |
| A H Jones Investigators Limited | Newton Abbot | 2013 |
| A H Molton Ltd | Market Rasen | 2016 |
| A H Monsen Limited | Morecambe | 2012 |
| A H Plastering Limited | Enfield | 2007 |
| A H Rahmani Ltd | Portsmouth | 2014 |
| A H Security Systems Limited | Hatfield | 2022 |
| A H Settle Ltd | Liverpool | 2023 |
| A H Travel Ltd | London | 2017 |
| A Hackett Solutions Limited | Wolverhampton | 2016 |
| A Halstead Ltd | Burnley | 2024 |
| A Hard Day's Type Limited | London | 2016 |
| A Harris Landscapes Ltd | Bolton | 2020 |
| A Haynes Carpentry Ltd | Daventry | 2021 |