| Anne Humphris Limited | Altrincham | 2012 |
| Anne Johnson Ltd. | Bury St. Edmunds | 2013 |
| Anne L Dummett Editing Limited | London | 2003 |
| Anne's Records and Picture House Ltd. | Caldicot | 2020 |
| Anne-Louise Russell Limited | Hemel Hempstead | 2016 |
| Anne-Marie Lucas Editing Limited | Teddington | 2017 |
| Annecto Marketing Ltd | Otley | 2016 |
| Annecto Messaging Limited | London | 2015 |
| Annecto Telecom Limited | London | 2014 |
| Annecy Records Ltd | Cardiff | 2020 |
| Annedd WEN Ltd | Ruthin | 2025 |
| Anneka Rubin Limited | Pinner | 2020 |
| Anneki Solutions Limited | Harlow, Essex | 2025 |
| Anneler GEE Limited | Banbury | 2001 |
| Anneler Kulubu Ltd | Epsom | 2026 |
| Anneli Services Ltd | Southall | 2026 |
| Anneo Consulting Ltd | Letchworth Garden City | 2018 |
| Annertech (UK) Limited | Belfast | 2021 |
| Annesben Ltd | Stockport | 2022 |
| Anness Publishing Limited | Braintree | 1989 |
| Annesse Consulting Ltd | Wigan | 2022 |
| Annet Data Automation Ltd | Upton | 2018 |
| Annet Technologies (Europe) Limited | East Grinstead | 2014 |
| Annette Buesterfeld-Tubbesing Ltd | London | 2026 |
| Annette Corbett Consulting Ltd | Brentwood | 2019 |
| Annette Walker Ltd | London | 2012 |
| Annex (Films) Limited (the) | Orpington | 1973 |
| Annex Infotech Limited | Amersham | 2024 |
| Annex Productions Ltd | London | 2021 |
| Annexcy Limited | Basildon | 2025 |
| Annexe Records Ltd | Waterlooville | 2021 |
| Annexio Marketing Services (UK) Limited | London | 2017 |
| Annexis Health Ltd | Sutton | 2024 |
| Annext Tech Solutions Limited | Reading | 2015 |
| Anniblemuirsmith Limited | Walton-On-Thames | 2026 |
| Annicchiarico Digital Services Ltd | Amersham | 2024 |
| Annie & Aggie Ltd | Glasgow | 2024 |
| Annie Barker Media Limited | Godalming | 2018 |
| Annie Capital Ltd | London | 2024 |
| Annie Charlie Limited | Dagenham | 2025 |
| Annie Hardinge Limited | Gerrards Cross | 2011 |
| Annie Jose Limited | Epsom | 2025 |
| Annie Librae Limited | London | 2022 |
| Annie Mals Limited | Manchester | 2021 |
| Annie Mcconnell Limited | Stevenage | 2026 |
| Annie Mcgeoch Limited | Fordingbridge | 2011 |
| Annie Needham Limited | London | 2015 |
| Annie Nordstrom Ltd | Chichester | 2025 |
| Annie Reed Music Limited | Showell | 2005 |
| Annieguard Ltd | London | 2025 |
| Annielou Ltd | Swansea | 2025 |
| Anniemations Limited | Eastbourne | 2006 |
| Annika SPV Ltd | Glasgow | 2020 |
| Annika Stranded Finance Limited | London | 2020 |
| Anniq AI Ltd | Haslemere | 2022 |
| Annis IT Limited | Brighton | 2013 |
| Annison Ltd | Keighley | 2012 |
| Annitech Ltd | Basingstoke | 2014 |
| Annix Ltd | Thame | 2007 |
| Annix Studios Ltd | Thame | 2009 |
| Annkir Limited | Edinburgh | 2013 |
| Annlytical Media Ltd | Brighton | 2015 |
| Anno Domini Publishing Limited | Southport | 1988 |
| Anno Group Limited | Leeds | 2017 |
| Annodata Limited | Hemel Hempstead | 1988 |
| Annom Systems Ltd | Hemel Hempstead | 2025 |
| Annonation Ltd | London | 2025 |
| Annonce Legale France Ltd | London | 2025 |
| Annonce Legale PAS Chere Ltd | London | 2025 |
| Annonce Legales Ltd | London | 2025 |
| Annonces Legale Ltd | London | 2025 |
| Annor Labs Ltd | Wembley | 2026 |
| Annotari Limited | Glasgow | 2010 |
| Annotate Software Limited | Edinburgh | 2005 |
| Annotateai Ltd | London | 2025 |
| Annoture Ltd | Leicester | 2026 |
| Announce Media Limited | Stockport | 2023 |
| Announce World Ltd | London | 2020 |
| ANNOUNCE24 Ltd | Reading | 2020 |
| Annoyed Cat Ltd | St. Neots | 2018 |
| Annrose Consulting Ltd | Newcastle Upon Tyne | 2023 |
| Anns Consulting Ltd | Slough | 2013 |
| Annsa Limited | | 1997 |
| Annsolutions Ltd | Redhill | 2023 |
| Annulet Limited | Borehamwood | 2000 |
| Annuli Health Ltd | London | 2026 |
| Annunaki Limited | Dundee | 2026 |
| Annuo Health Cloud - UK Ltd | London | 2025 |
| Annwar Hussain (Nottingham) Consultants Ltd | Nottingham | 2018 |
| Annwen Limited | Swansea | 2020 |
| Annwn Group Ltd | London | 2026 |
| Annxd Ltd | Glasgow | 2025 |
| Annyka Consulting Ltd | Essex | 1998 |
| Annys Hamilton Ltd | Chesham | 2021 |
| ANO Insights Limited | London | 2026 |
| ANO IT Solutions Limited | Bexleyheath | 2009 |
| ANO Studios Ltd | Burton-On-Trent | 2023 |
| Ano-K Productions Ltd | London | 2025 |
| Anobox Limited | Slough | 2013 |
| Anoca Limited | Norfolk | 1986 |