| Affinity Homecare Holdings Limited | Burntwood | 2009 |
| Affinity IFA Limited | Troon | 2012 |
| Affinity Independent Financial Solutions Ltd | Potters Bar | 2015 |
| Affinity Independent Limited | Bierton | 2003 |
| Affinity Individual Mortgage Services Limited | Harrogate | 2007 |
| Affinity Insurance Services Limited | Hampshire | 1999 |
| Affinity Insurance Solutions Limited | Sevenoaks | 2020 |
| Affinity Living Limited | Alderley Edge | 2015 |
| Affinity Markets Ltd | Middlesbrough | 2022 |
| Affinity Mortgage Solutions Limited | Northamptonshire | 2002 |
| Affinity Mortgages Limited | Westcliff On Sea | 2012 |
| Affinity Private Enterprise Limited | London | 2024 |
| Affinity Property Projects Limited | Westcliff On Sea | 2020 |
| Affinity Protect Limited | Southampton | 2018 |
| Affinity Rail Holdings Limited | Liverpool | 2015 |
| Affinity Select Insurance Services Limited | Uckfield | 1998 |
| Affinity Shipping International Limited | London | 2011 |
| Affinity Sutton Capital Markets PLC | London | 2008 |
| Affinity Sutton Funding Limited | London | 2005 |
| Affinity Sutton Investments Limited | London | 2010 |
| Affinity Water Capital Funds Limited | Hatfield | 1991 |
| Affinity Water East Limited | Hatfield | 1991 |
| Affinity Water Finance (2004) PLC | Hatfield | 2004 |
| Affinity Water Finance PLC | Hatfield | 2018 |
| Affinity Water Holdco Finance Limited | Hatfield | 2017 |
| Affinity Water Holdings Limited | Hatfield | 2013 |
| Affinity Water Pension Trustees Limited | Hatfield | 2012 |
| Affirm Loans UK Limited | London | 2025 |
| Affirm U.K. Limited | London | 2016 |
| Affirma Financial Planning Ltd | London | 2023 |
| Affirmative Assets Limited | Ruislip | 2020 |
| Affirmative Finance Limited | Greater Manchester | 2004 |
| Affirmative Funding Limited | Manchester | 2014 |
| Afflelou Pikco Limited | London | 2025 |
| Affluate Investment Managers Limited | London | 2022 |
| Affluence Financial Management Services Limited | Derby | 2022 |
| Affluent Financial Group Ltd | Bridge Of Weir | 2021 |
| Affluent Financial Planning Ltd. | Bridge Of Weir | 1995 |
| Affluent Insurance Solutions Limited | Andover | 2025 |
| Affluent Lifestyle Limited | London | 2012 |
| Affluent Lifestyle Planning Ltd | Bridge Of Weir | 2001 |
| Affluent Universe Limited | Cardiff | 2013 |
| Affodell Cyfyngedig Limited | Stratford-Upon-Avon | 2012 |
| Affordable Business Solutions Ltd | Gateshead | 2022 |
| Affordable Finance (South) Limited | Glasgow | 2013 |
| Affordable Finance Limited | Wolverhampton | 2007 |
| Affordable Houses to Own Limited | London | 2018 |
| Affordable Housing and Healthcare Group Limited | Bournemouth | 2016 |
| Affordable Housing and Healthcare Group Secured Lending Limited | Bournemouth | 2015 |
| Affordable Housing Finance PLC | London | 2013 |
| Affordable Housing Treasury Limited | Stafford | 2019 |
| Affordable Infrastructure UK Ltd | Bournemouth | 2020 |
| Affordable Vehicles Ltd | Burnham | 2018 |
| Affront Capital Consulting Limited | Mitcham | 2026 |
| Affuture Financial Limited | Bath | 2015 |
| AFG 2022 Limited | Worcester | 2022 |
| AFG Capital Holdings Ltd | Walsall | 2026 |
| AFG Holdco Ltd | Redditch | 2022 |
| AFG Invest Ltd | London | 2019 |
| AFG Sarafi Ltd | Thornton Heath | 2019 |
| Afghanistan Ifaspfd Investment Ltd | Harrow | 2026 |
| AFH Acquisitions Limited | Bromsgrove | 2009 |
| AFH Financial Group Limited | Bromsgrove | 2011 |
| AFH Group Limited | Bromsgrove | 1990 |
| AFH Holdco Limited | Worksop | 2021 |
| AFH Independent Financial Services Limited | Bromsgrove | 2000 |
| AFH Offices Limited | London | 2024 |
| Afia Commercial Consultants Limited | Macclesfield | 2020 |
| Afia Group Limited | Abbots Langley | 2026 |
| Afic - Accounting Finance Consultancy Ltd | Leeds | 2026 |
| Afifi Holdings Ltd | London | 2022 |
| Afig Holdings Ltd | Esher | 2024 |
| Afig Limited | Esher | 2022 |
| Afig Partners Ltd | London | 2023 |
| Afii Capital Partners Limited | London | 2025 |
| Afilcorp Formations Ltd | London | 2025 |
| Afima Holdings Limited | London | 2026 |
| Afin Bank Limited | London | 2020 |
| Afin Solutions Limited | Birmingham | 2025 |
| Afinacorp Limited | Middlesex | 1986 |
| Afinite Investments Ltd | Leeds | 2021 |
| Afinum Ltd | London | 2021 |
| Afjm Investments Limited | Otley | 2023 |
| Afjr Holdings Limited | Ellon | 2024 |
| AFK Executive Ltd | Altrincham | 2026 |
| AFK Group Holdings Ltd | St. Albans | 2026 |
| AFL Casa UK Ltd | Chelmsford | 2023 |
| AFL Engineering Holdings Limited | Hebburn | 2021 |
| AFL Financial Strategies Ltd | Bury St. Edmunds | 2011 |
| AFL Hold Ltd | London | 2022 |
| AFL Wealth Management Limited | Wirral | 2010 |
| Aflax Ltd | London | 2009 |
| AFM Business Growth Limited | Liverpool | 2017 |
| AFM Finance Limited | London | 2021 |
| AFM Holdings Limited | Cheadle | 2024 |
| AFM Investments 1 Limited | London | 2025 |
| AFM Investments 2 Limited | London | 2026 |
| AFM Investments 3 Limited | London | 2025 |
| AFM Investments Limited | Glasgow | 2015 |
| AFM Management Limited | Beaconsfield | 2014 |