| Affinitax Limited | Birmingham | 2023 |
| Affiniti Lifestyle Limited | London | 2022 |
| Affinitive Asset Group Limited | Congleton | 2019 |
| Affinity (Reading) Holdings Limited | Swanley | 2003 |
| Affinity (UK) Limited | Corby | 2011 |
| Affinity 3 Ltd | Hitchin | 2022 |
| Affinity 4 Design Ltd | Bolton | 2020 |
| Affinity Accountancy & Advisory Ltd | London | 2011 |
| Affinity Actions Limited | Heathfield | 1995 |
| Affinity Advisors Ltd | London | 2019 |
| Affinity Africa Limited | London | 2021 |
| Affinity Architects Limited | Bournemouth | 2014 |
| Affinity Associates (AU) Limited | Ashford | 2018 |
| Affinity Associates (Cambridge) Limited | Wembley | 2002 |
| Affinity Associates (EA) Limited | Dereham | 2017 |
| Affinity Associates (Flemmings) Limited | Croydon | 2014 |
| Affinity Associates (Horsham) Limited | Middlesex | 2025 |
| Affinity Associates (JTA) Limited | Wembley | 2008 |
| Affinity Associates (Marlow) Limited | Marlow | 2002 |
| Affinity Associates (Richmond) Ltd | Wembley | 2009 |
| Affinity Associates Accountancy Limited | London | 2017 |
| Affinity Associates Bookkeeping Limited | London | 2017 |
| Affinity Associates Isaacs & Co Limited | Doncaster | 2016 |
| Affinity Associates Limited | Wembley | 2010 |
| Affinity Associates Outsourcing Limited | Middlesex | 2025 |
| Affinity Bookkeeping Limited | Wembley | 2007 |
| Affinity Business Communications Limited | London | 2002 |
| Affinity Business Partners Limited | Gateshead | 2011 |
| Affinity Business Solutions Limited | Ashford | 2026 |
| Affinity Care Advisory Ltd | Norwich | 2024 |
| Affinity Care Recruitment Services Ltd | Norwich | 2024 |
| Affinity Care Training Ltd | Norwich | 2024 |
| Affinity Coaching & Consulting Limited | | 2001 |
| Affinity Coaching and Supervision Ltd | London | 2012 |
| Affinity Comms Limited | Waterlooville | 2020 |
| Affinity Connect Limited | Liverpool | 2001 |
| Affinity Consultancy Management Ltd | Milton Keynes | 2012 |
| Affinity Consulting Limited | Middlesex | 2024 |
| Affinity Dynamics Limited | London | 2005 |
| Affinity Edge Consulting Limited | Berkhamsted | 2024 |
| Affinity Electrical Services Limited | Sheffield | 2011 |
| Affinity Element Limited | Frome | 2023 |
| Affinity Employment & Disability Management & Consultancy Ltd | Warminster | 2020 |
| Affinity Engineering Services Limited | Hyde | 2026 |
| Affinity Estate Planning Limited | Leigh-On-Sea | 2017 |
| Affinity Executive Limited | Daventry | 2020 |
| Affinity Fire Engineering (UK) Limited | London | 2011 |
| Affinity Flux Media Group Limited | Llanelli | 2018 |
| Affinity Futures Consultancy Ltd | Manchester | 2023 |
| Affinity Global Services Ltd | Barnet | 2017 |
| Affinity Health at Work Ltd | London | 2006 |
| Affinity Healthcare Limited | London | 2004 |
| Affinity Hospitals Group Limited | Glasgow | 2001 |
| Affinity Hospitals Holding Limited | Glasgow | 1999 |
| Affinity HR & Management Ltd | Leicester | 2018 |
| Affinity Initiative Limited | Horley | 2018 |
| Affinity Intent Limited | Sheffield | 2020 |
| Affinity Laboratories Limited | London | 2017 |
| Affinity Law Limited | Leicester | 2008 |
| Affinity Law Personal Injury Limited | Leicester | 2011 |
| Affinity Legal Solutions Ltd | Carmarthen | 2023 |
| Affinity Management Solutions Limited | Manchester | 2016 |
| Affinity Marketing Limited | Cuckfield | 2001 |
| Affinity Merchandise Limited | Maidenhead | 2014 |
| Affinity NET Enterprise Limited | London | 2025 |
| Affinity Offshore Ltd | Aberdeen | 2022 |
| Affinity Operations Limited | Barnsley | 2024 |
| Affinity Partners Limited | London | 1999 |
| Affinity Partnership Solutions Limited | Abergele | 2021 |
| Affinity PAT Ltd | Inverurie | 2020 |
| Affinity People Limited | Rothley | 2025 |
| Affinity Planning Ltd | Glasgow | 2020 |
| Affinity Professional Services Limited | Lichfield | 2010 |
| Affinity Project Services Ltd | Coventry | 2018 |
| Affinity Projects Consulting Ltd | London | 2025 |
| Affinity Resolutions Ltd | Shrewsbury | 2020 |
| Affinity Searches Ltd | Abergavenny | 2008 |
| Affinity Secure Solutions Ltd | London | 2024 |
| Affinity Security Consulting Limited | London | 2010 |
| Affinity SEO Ltd | Penrith | 2025 |
| Affinity Seven Law Solicitors Ltd | Rochdale | 2015 |
| Affinity Sure Limited | London | 2026 |
| Affinity Surveying Ltd | Midhurst | 2017 |
| Affinity Water Southeast Limited | Hatfield | 1992 |
| Affinity Wealth Management (NW) Limited | Newcastle | 2009 |
| Affinity Wills Ltd | East Grinstead | 1999 |
| Affinity Wills Services Ltd | East Grinstead | 1999 |
| Affinius Capital UK Ltd | London | 2024 |
| Affinnity Limited | Bishop'S Stortford | 2011 |
| Affirm Accountancy Services Limited | Bolton | 2006 |
| Affirm Accountant Limited | Morden | 2018 |
| Affirm Accountants Midlands (UK) Ltd | Derby | 2020 |
| Affirm Accounting Limited | Bexleyheath | 2018 |
| Affirm Legal Ltd | London | 2021 |
| Affirm Payroll Ltd | Gloucester | 2026 |
| Affirm Solutions Limited | Morden | 2021 |
| AFFIRM8 Consultancy Ltd | Ashford | 2022 |
| Affirma Ltd | Chichester | 2019 |
| Affirmative Action (U.K.) Limited | Cannock | 1982 |
| Affirmative Services Limited | London | 2024 |