| A FEW Good MEN Ltd | Swindon | 2002 |
| A FEW Good People Limited | Harwich | 2009 |
| A Fillis Consulting Ltd | Hartley Wintney | 2013 |
| A Financial Management Co Limited | Manchester | 2019 |
| A Fine Friend Ltd | London | 2023 |
| A Fine Reflex Ltd | London | 2025 |
| A Fine SET of Whiskers Ltd | Alperton | 2016 |
| A Fish in Sea Limited | Wimborne | 2006 |
| A Fitting Choice Ltd | Romsey | 2009 |
| A Fletcher Associates Limited | Crewe | 2017 |
| A Foley Ltd | Northwood | 2020 |
| A Food Researcher Ltd | London | 2026 |
| A for OWL Ltd | London | 2021 |
| A Ford Heating Services Ltd | Aylesbury | 2021 |
| A Forever Summer Ltd | Bolton | 2026 |
| A Forte for Ltd | London | 2025 |
| A Frame Design Ltd | London | 2020 |
| A Fraser Solicitors Ltd | Inverness | 2019 |
| A French Engineering Ltd | Chester Le Street | 2016 |
| A Fresh Idea Ltd | Penryn | 2017 |
| A Fresh Pair of Eyes Ltd | London | 2024 |
| A Fresh Perspective Limited | Shrewsbury | 2011 |
| A Frey Consultancy Ltd | London | 2025 |
| A Friendly Bunch Ltd | Saffron Walden | 2022 |
| A Furneaux Limited | Edinburgh | 2025 |
| A Furry World Limited | North Chingford | 2003 |
| A Future Without Rubbish CIC | London | 2020 |
| A Fyfe Rail Operations Consulting Ltd | Biggar | 2015 |
| A G Accountancy Services Limited | Derby | 2019 |
| A G Artwork Limited | Woodford Green | 2004 |
| A G B Draughting Services Ltd | Cheadle | 2013 |
| A G Bennett Ltd | Swansea | 2019 |
| A G Borg Limited | Leamington Spa | 2013 |
| A G Brookes Ltd | Wakefield | 2022 |
| A G Building Consultancy Ltd | Lymm | 2017 |
| A G Burge Ltd | Gloucester | 2014 |
| A G C Accountancy Ltd | Chertsey | 2010 |
| A G Darling & Co Ltd | Worthing | 2018 |
| A G Edwards Ltd | Worthing | 2024 |
| A G Environmental Consultancy Ltd | Callander | 2025 |
| A G Financial Consultants Limited | Uxbridge | 2009 |
| A G Heale Limited | Treorchy | 2003 |
| A G I Plus Ltd | Northampton | 2019 |
| A G J Holdings Limited | Lancashire | 2005 |
| A G J Saunders Ltd | Watford | 2018 |
| A G Kelly Ltd | Banbury | 2002 |
| A G LEA Consulting Limited | Crewe | 2021 |
| A G Lift Services Limited | Salisbury | 2019 |
| A G Lynch Limited | Nottingham | 2013 |
| A G Mackinnon Consultancy Limited | London | 2023 |
| A G Management Systems Limited | Crowborough | 1991 |
| A G Martin Designs Ltd | London | 2023 |
| A G NEL Limited | Brackley | 2013 |
| A G of C Limited | Canterbury | 2019 |
| A G Osmond Surveys Limited | Weymouth | 2012 |
| A G Parker Construction Ltd | Great Yarmouth | 2013 |
| A G Process Limited | Sutton Coldfield | 2026 |
| A G R Accounts Ltd | London | 2024 |
| A G Rutherford Limited | Stocksfield | 2011 |
| A G S Architectural Services Limited | Launceston | 2007 |
| A G Safety and Compliance Ltd | Bishopton | 2026 |
| A G Safety Services Limited | Redhill | 2005 |
| A G Secretarial Limited | London | 1991 |
| A G Services (Leicester) Limited | Leicester | 2001 |
| A G Smith & Co Ltd | Grimsby | 2003 |
| A G Smith Accountancy Ltd | Dunblane | 2019 |
| A G Supplies & Installations Limited | Peterborough | 2002 |
| A G Supporting Services Limited | Derby | 2013 |
| A G Surveying Consultancy Ltd | Adderbury | 2018 |
| A G Surveying Ltd | Ware | 2016 |
| A G Wallis Group Limited | Burton-On-Trent | 2024 |
| A G Welford & Co Ltd | Henley-On-Thames | 2024 |
| A G-O Translations Limited | Cannock | 2002 |
| A Galbraith Services Ltd | Solihull | 2014 |
| A Game Marketing Limited | Gerrards Cross | 2019 |
| A Garbutt Training Limited | Middlesbrough | 2016 |
| A Gard Consultancy Ltd | London | 2025 |
| A Garvey Limited | Cardiff | 2015 |
| A Gate Called Beautiful Ltd | Purfleet-On-Thames | 2025 |
| A Gerrard Global Limited | Wembley | 2020 |
| A Ghide Ltd | London | 2020 |
| A Ghost Digital Ltd | Upminster | 2023 |
| A Gibson Advisory Ltd | London | 2026 |
| A Girl Called RAJ Ltd | 19-21 Aintree Road | 2018 |
| A Global Village Ltd | Ipswich | 2023 |
| A Goldsbrough Ltd | Middlesbrough | 2019 |
| A Gooch & Co Ltd | Kent | 2003 |
| A Good Business Ltd | Newbury | 2010 |
| A Good MAN Ltd | London | 2021 |
| A Good Nudge Agency Limited | Wednesbury | 2024 |
| A Good Place for BME People in Lewisham Ltd | London | 2025 |
| A Goodacre Ltd | Romford | 2025 |
| A Goodall Consulting Ltd | Stamford | 2021 |
| A Goode Business Ltd | Reading | 2020 |
| A Goodman Services Limited | Leigh-On-Sea | 2026 |
| A Gosai Procurement Services Ltd | Blackburn | 2019 |
| A Gowing Limited | Brentwood | 2003 |
| A Grain of Sand Limited | Mount Hawke | 2009 |
| A Grant Services Ltd | Nairn | 2024 |
| A Graphic Studio Limited | Kent | 2000 |