| Anchorlayer AI Limited | Horsham | 2024 |
| Anchorlink Technology Ltd | London | 2024 |
| Anchorly Ltd | London | 2026 |
| Anchornex Ltd. | London | 2026 |
| Anchorpark Consulting Ltd | Ipswich | 2026 |
| Anchorpoint Cyber Limited | Haslemere | 2025 |
| Anchorpoint Technology Consulting Limited | Market Rasen | 2022 |
| Anchorpoint Technology Limited | Market Rasen | 2022 |
| Anchorpoint Technology Services Limited | Cardiff | 2025 |
| Anchorsecure Behavior Ltd | Hayes | 2024 |
| Anchorstack Ltd | Harlow | 2026 |
| Anchortech Solutions Ltd | Newport Pagnell | 2026 |
| Anchortek Ltd | Mitcham | 2016 |
| Anchorwoman Ltd | Canning Town | 2021 |
| Anchorx One Ltd. | West Midlands, England | 2025 |
| Anchous Editing Ltd | Bolton | 2022 |
| Anchovy Pictures Ltd | Blandford Forum | 2008 |
| Anchr Ltd | London | 2024 |
| Ancient Consulting Limited | Waltham Abbey | 2021 |
| Ancient Egypt Magazine Ltd. | London | 2008 |
| Ancient Future Productions Limited | London | 2023 |
| Ancient Futures Limited | London | 2016 |
| Ancient Futurist Creative Ltd | London | 2026 |
| Ancient Organism Ltd | London | 2023 |
| Ancientcoin.Ai Ltd | London | 2025 |
| Ancile Cyber Security Limited | Newbury | 2018 |
| Ancile Limited | Exeter | 2020 |
| Ancile Solutions Ltd. | London | 2010 |
| Ancillaries Group Limited | London | 2016 |
| Ancillary Technologies Ltd | London | 2025 |
| Ancitus Limited | London | 2023 |
| Anco AI Ltd | Manchester | 2018 |
| Ancoats LAB Ltd | Manchester | 2016 |
| Ancoats Yacht Club Ltd | Manchester | 2020 |
| Ancom UK Limited | Dorset | 2001 |
| Ancoma International Ltd | Great Bookham | 2003 |
| Ancon Hill Publishing Limited | London | 2012 |
| Ancona Browne Limited | London | 2024 |
| Ancona Consulting Limited | Rotherham | 2025 |
| Ancona Coxwell Ltd | Hainault Business Park | 2023 |
| Anconeus Ltd | London | 2012 |
| Anconia Limited | Oxford | 2010 |
| Anconsultants Limited | Sale | 2010 |
| Ancor Labs Ltd | Burnham-On-Sea | 2026 |
| Ancora Imparo (Global) Ltd | London | 2026 |
| Ancora Innovation Technology Limited | London | 2018 |
| Ancora Software UK Ltd | Hemel Hempstead | 2018 |
| Ancoro Limited | Shrewsbury | 2014 |
| Ancov Ltd | London | 2016 |
| Ancr Limited | London | 2026 |
| Ancre Limited | London | 2025 |
| Ancreva Strategy and Brand Engineering Limited | Maidenhead | 2025 |
| Ancro International Limited | London | 2023 |
| Ancrum Software Limited | Diss | 2023 |
| Ancrypt Ltd | Bury St. Edmunds | 2022 |
| Ancs Consultancy Ltd | Londonderry | 2024 |
| Anctech Limited | Gillingham | 2026 |
| Ancyra Solutions Ltd | London | 2014 |
| AND a Movie Ltd | Woking | 2024 |
| AND Above Limited | London | 2021 |
| AND Again Ltd | Liverpool | 2018 |
| AND Another Day Ltd | Bordon | 2024 |
| AND Beyond Change Limited | Isle Of Wight | 2023 |
| AND Beyond Records Limited | Bushey | 2025 |
| AND Bloom Limited | London | 2024 |
| AND Consulting Ltd | Leeds | 2021 |
| AND Content Limited | London | 2021 |
| AND Europe Ltd | Newcastle Upon Tyne | 2013 |
| AND Films Limited | London | 2013 |
| AND Go Productions Limited | London | 2016 |
| AND Group Limited | Tyne & Wear | 1988 |
| AND IT HAS Ltd | London | 2020 |
| AND Live Limited | Cardiff, | 2013 |
| AND More Media Ltd | Harpenden | 2022 |
| AND MRS the Film Ltd | London | 2022 |
| AND on That Bombshell Limited | Plymouth | 2015 |
| AND Other Films Limited | London | 2019 |
| AND Other Stories Publishing C.I.C. | Sheffield | 2010 |
| AND Other Ways (UK) Ltd | Bury St. Edmunds | 2026 |
| AND Production Design Ltd | Sunbury-On-Thames | 2023 |
| AND Productions Limited | Northampton | 2009 |
| AND Q Productions Limited | London | 2008 |
| AND SO SHE DID Ltd | Earlswood | 2026 |
| AND Soft Ltd | London | 2025 |
| AND SON Music Limited | London | 1977 |
| AND Still the Bells Productions Ltd | Bristol | 2025 |
| AND Systems Limited | Bedford | 2025 |
| AND That's HOW YOU Ltd | Marlborough | 2023 |
| AND Then Consulting Limited | Leeds | 2024 |
| AND Then There WAS Peace Film Ltd | London | 2019 |
| AND WE DO This Ltd | Kelso | 2007 |
| AND What LDN Limited | London | 2019 |
| And/Or Ltd | London | 2014 |
| And/Or Productions Limited | Glasgow | 2024 |
| AND82 Ltd | Whitwick | 2019 |
| Anda Cabling Ltd | London | 2015 |
| Anda Communications Ltd | Gloucester | 2020 |
| Anda Film Limited | Leeds | 2010 |
| Andac Kazar Media Ltd | London | 2025 |
| Andacami Limited | Buckhurst Hill | 2004 |