| Afco Limited | Pudsey | 2018 |
| Afco Luton UK Ltd. | London | 2002 |
| Afconsulting Pro Lawyers Ltd | Rustington | 2023 |
| AFD International Ltd | Telford | 2006 |
| AFD Management Ltd | London | 2016 |
| AFD Studio Ltd | London | 2026 |
| Afdec Limited | London | 2007 |
| Afds Consulting Ltd | London | 2024 |
| AFE Accountants Limited | London | 2014 |
| AFE Certification Limited | Sheffield | 2026 |
| AFE Consultancy Limited | London | 2023 |
| AFE Digital Ltd | Warwick | 2025 |
| AFE Limited | Berkshire | 2003 |
| Afearn Accountancy Ltd | Sidcup | 2022 |
| Afec Engineering Limited | Croydon | 2026 |
| Afectivo Ltd | Leamington Spa | 2025 |
| Afeeah Ltd | Gerrards Cross | 2022 |
| Afeez Broadway Ltd | Cardiff | 2019 |
| Afel Industrial Company Limited | Grangetown, | 2015 |
| Afela Ltd | London | 2024 |
| Afelatay Ltd | Dunfermline | 2023 |
| Afell Consulting Ltd | Wrexham | 2023 |
| Afem Leasing and Trade Finance Brokers Limited | Oldham | 2007 |
| Afemia Ltd | Wirral | 2020 |
| Afendakis Ltd | Uxbridge | 2026 |
| Afendi Creative Solutions Limited | London | 2021 |
| Afendis Capital Management (UK) Limited | London | 2025 |
| Afenifere Limited | Bury St. Edmunds | 2024 |
| Afenssol Ltd | Reading | 2019 |
| Afenua Ltd | London | 2026 |
| Afer Ltd | London | 2025 |
| Aferry Group Limited | Abingdon | 2017 |
| AFF Corporate Ltd | Glasgow | 2013 |
| AFF Edtech Ltd | Norwich | 2017 |
| Affabilis Limited | Chislehurst | 2006 |
| Affable Accountancy Limited | Corby | 2026 |
| Affable Management Consultancy Limited | Dartford | 2019 |
| Affaf Accountants Limited | Ilford | 2018 |
| Affaim Ltd | London | 2025 |
| Affan Engineering Ltd | Aberdeen | 2012 |
| Affas Besse Advisors Ltd | London | 2015 |
| Affas Ltd | Sheffield | 2025 |
| Affawell Ltd | London | 2025 |
| Affect Accountancy Limited | Sudbury | 2015 |
| Affect Group Limited | Sudbury | 2015 |
| Affect in Limited | Winchester | 2015 |
| Affect Studio Ltd | Edinburgh | 2019 |
| Affecta Ltd | Prescot | 2023 |
| Affectiva UK Ltd | Bucks | 2021 |
| Affective Digital Limited | London | 2026 |
| Affective Minds Ltd | Hitchin | 2021 |
| Affective Mobility Ltd | Wokingham | 2025 |
| Affecton Accounting Limited | Chippenham | 2019 |
| Affendie Capital Ltd | London | 2026 |
| Affeng Limited | Benfleet | 2014 |
| Afferent Medical Solutions Ltd | Cardiff | 2019 |
| Affidea UK Services Limited | London | 2008 |
| Affigo.Online Ltd | Epping | 2025 |
| AFFILI8 International Ltd | Wells | 2022 |
| Affiliate 23 Limited | Westcliff-On-Sea | 2022 |
| Affiliate Check Ltd | London | 2026 |
| Affiliate Empire Ltd | London | 2026 |
| Affiliate Famly Ltd | Chester | 2025 |
| Affiliate Future Ltd | London | 2025 |
| Affiliate Intelligence Ltd | London | 2023 |
| Affiliate IP Limited | Hemel Hempstead | 2016 |
| Affiliate Ltd | London | 2005 |
| Affiliate Marketing Campaign Management Ltd | Manchester | 2023 |
| Affiliate Nexus Limited | Stroud | 2025 |
| Affiliate Performance Marketing Limited | Newark | 2015 |
| Affiliate Planet Ltd | London | 2017 |
| Affiliate PPC AD Services Ltd | Nottingham | 2025 |
| Affiliate Programme Ltd | Birmingham | 2026 |
| Affiliate Project Ltd | London | 2019 |
| Affiliate Vision Ltd | Edgware | 2018 |
| Affiliates for Affiliates Ltd | Broxbourne | 2025 |
| Affiliatetraction UK Ltd | London | 2012 |
| Affiliatik Limited | Harrow | 2016 |
| Affilicoms Ltd | Tadley | 2011 |
| Affilinations Ltd | London | 2025 |
| Affilms Community Limited | London | 2022 |
| Affimer Limited | London | 2013 |
| Affina Ltd | London | 2026 |
| Affina Organisation Development Limited | Farnborough | 2003 |
| Affine Consulting Ltd | Stowmarket | 2019 |
| Affiner Ltd | Solihull | 2024 |
| Affini Technology Group Limited | West Drayton | 2022 |
| Affinia Associates Limited | Colchester | 2010 |
| Affinia Audit Limited | London | 2024 |
| Affinia Group Advisory Limited | Colchester | 2023 |
| Affinia Group Ltd | Plymouth | 2023 |
| Affinia Holdings Limited | Chipping Sodbury | 2019 |
| Affinia Limited | Colchester | 1993 |
| Affinia Partnerships Limited | Bristol | 2006 |
| Affinion International Limited | London | 1983 |
| Affinion Partnership Ltd | Birmingham | 2017 |
| Affinis Consulting Ltd | Birmingham | 2026 |
| Affinis Limited | Hampshire | 2004 |
| Affinit Ltd | Crowborough | 2007 |
| Affinitas Limited | Guildford | 2021 |