| Africhi Group Limited | London | 2015 |
| Afrifinance Limited | Hastings | 2011 |
| Afrikia Impex Ltd | Bristol | 2025 |
| Afrinvest Limited | London | 2016 |
| Afrirights | London | 2025 |
| Afritrade (Europe) Limited | Bexhill-On-Sea | 1994 |
| Afritrade London Limited | Hastings | 2011 |
| Afro Asian Foods Ltd | Stevenage | 2025 |
| Afro Hair Boutique Limited | Ilford | 2011 |
| Afro Street Ltd | Crewkerne | 2022 |
| Afroditi Tsetoura Ltd | Kington | 2022 |
| Afrofoods Consultancy Limited | Edinburgh | 2019 |
| Afrorythms.Com Limited | London | 2013 |
| Afroturf Limited | Rainham | 2018 |
| AFS Dean Limited | Grantham | 2021 |
| AFS Finance Ltd | Blackburn | 2015 |
| AFS Investments Limited | Uttoxeter | 2011 |
| AFS Lease (UK) Ltd | Blackburn | 2008 |
| AFT Education Ltd | Loughton | 2025 |
| AFT Investments Limited | Glasgow | 2011 |
| Aftala Norfolk Ltd | London | 2013 |
| After Motion Limited | Bristol | 2025 |
| After My Days Limited | Cowbridge | 2022 |
| After My Heart Limited | London | 2010 |
| After the Disco Ltd | Bristol | 2024 |
| Afterset Limited | Barnet | 1989 |
| AFW Management Ltd | Coventry | 2013 |
| AFX Capital Ltd | London | 2024 |
| Afyheim Ltd | London | 2009 |
| Afzal Investment Management Ltd | Sheffield | 2014 |
| AG Building Services Finland Limited | London | 2016 |
| AG Communications Ltd | Macclesfield | 2025 |
| AG Concepts Limited | Prestwick | 2014 |
| AG Financial Foresight Limited | Downpatrick | 2006 |
| AG Garrant Limited | Sheffield | 1973 |
| AG Gatehouse Ltd | Llangefni | 2024 |
| AG Graphics Ltd | Woodford Green | 2014 |
| AG Hantverk OCH Entreprenad Limited | London | 2011 |
| AG Horses Limited | London | 2023 |
| AG Signs Limited | Castleford | 2005 |
| AG Studios Limited | St Albans | 2010 |
| AG Trustee Limited | Ewloe | 2022 |
| AG1.SERV Limited | Ferryhill | 2026 |
| AG365 Holdings Ltd | Herne Bay | 2011 |
| AGA Care Limited | Long Eaton | 1974 |
| AGA Consult Ltd | London | 2006 |
| AGA Consulting Limited | North Harrow | 2021 |
| AGA Consumer Products Limited | Long Eaton | 1897 |
| AGA Cookers Limited | Long Eaton | 1962 |
| AGA Living Limited | Long Eaton | 1902 |
| AGA Public Relations Limited | London | 2000 |
| AGA Rangemaster Properties Limited | Long Eaton | 1959 |
| AGA Spares Limited | Newbury | 2016 |
| AGA Subsea Services Limited | London | 2010 |
| AGA Yachting Limited | Blackpool | 2023 |
| Agacookshop Limited | Long Eaton | 1934 |
| Agafert S.R.L Ltd | London | 2019 |
| Agalinks Cookware Limited | Leamington Spa | 1967 |
| Agalinks Limited | Long Eaton | 1953 |
| Agaman Limited | Dorchester | 2016 |
| Agan Properties Limited | Slough | 2025 |
| Aganet Ltd | Whitehills Business Park | 2012 |
| Agape Yarusam UK Ltd | Ashford | 2006 |
| Agapeo Love International Ministries Limited | Gillingham | 2020 |
| Agapply Limited | Newark | 2017 |
| Agarwood Property Retail Ltd | Essex | 2015 |
| Agasco Biochar Limited | Cheltenham | 2025 |
| Agathos II Management II Limited | London | 2020 |
| Agathos II Management Limited | London | 2020 |
| Agathos III Management Limited | London | 2024 |
| Agathos Systems Ltd | Nottingham | 2010 |
| Agau 4 Stad Limited | London | 2024 |
| Agave Alba Ltd | Edinburgh | 2023 |
| Agavil Four Ltd | Hereford | 2015 |
| Agavil One Ltd | Hereford | 2015 |
| Agavil Three Ltd | Hereford | 2015 |
| Agavil Two Ltd | Hereford | 2015 |
| AGC Management Limited | Guildford | 2016 |
| Agchem Access UK Ltd | Harleston | 2007 |
| Agchemaccess Poland Ltd | Harleston | 2007 |
| Agden Hall Limited | Whitchurch | 2023 |
| Agdg Consulting Services Ltd | Wolverhampton | 2025 |
| AGE Cctv Limited | Lynchwood | 2014 |
| AGE Concern Haslemere and District Ltd | Godalming | 2017 |
| AGE Concern Limited | London | 2005 |
| AGE Concern Surrey (Trading) Limited | Godalming | 2016 |
| AGE Concern Surrey Limited | Godalming | 2016 |
| AGE Concern Trading Limited | London | 2005 |
| AGE Cymru West Glamorgan Limited | Swansea | 2011 |
| AGE GAP Limited | Harrogate | 2026 |
| AGE Homes Limited | Ilford | 2010 |
| AGE Legal Assist Ltd | Liverpool | 2016 |
| AGE Management Services Ltd | Liverpool | 2016 |
| AGE NI Enterprises Limited | Belfast | 2014 |
| AGE Planning Assist Ltd | Liverpool | 2016 |
| AGE Planning Ltd | Liverpool | 2016 |
| AGE Systems Limited | Peterborough | 2007 |
| AGE UK Barnsley (Trading) Limited | Barnsley | 1994 |
| AGE UK Holidays Limited | London | 1996 |
| AGE UK Hull Trading Limited | Hull | 1994 |