| Ansell-Munden Associates Limited | Cannock | 2008 |
| Ansellton Limited | Carmarthen | 2019 |
| Anselm Iyamanbhor Ltd | London | 2018 |
| Anselm Law Limited | London | 2019 |
| Anselm Management Limited | London | 2007 |
| Ansema Ltd | Calne | 2026 |
| Ansen Media Ltd | Liverpool | 2022 |
| Anser Ecology Limited | Bridlington | 2014 |
| Anser Professional Services Limited | Strathpeffer, Ross-Shire | 2003 |
| Anser Solutions Limited | Southend On Sea | 2003 |
| Anserem Consulting Limited | Reading | 2023 |
| Anseris Mons Limited | Birmingham | 2014 |
| Anserv Limited | Lanark | 2008 |
| Ansh Holdings Limited | Derby | 2016 |
| Ansh Legal Limited | London | 2020 |
| Ansh Maheshwari Ltd | Doncaster | 2025 |
| Ansh Ventures Ltd | Maidenhead | 2026 |
| Ansham White Limited | North Harrow | 2016 |
| Anshawl DE Sousa Ltd | Hayes | 2025 |
| Anshelgenius Engineering Ltd | Glasgow | 2026 |
| Anshido Ltd | Cardiff | 2025 |
| Anshul Patel Proper Offer Ltd | London | 2026 |
| Ansi (UK) Limited | Hayes | 2007 |
| Ansible PR & Comms Limited | West Byfleet | 2019 |
| Ansim Holdings Ltd | Leek | 2018 |
| Ansintell Advisory Ltd | Wokingham | 2025 |
| Ansira Partners Ltd. | Altrincham | 2021 |
| Ansiya Limited | Morden | 2026 |
| Ansley Construction Limited | Kent | 1975 |
| Anslow Building Surveyors Limited | Altrincham | 2024 |
| Ansome Consultancy & Training Ltd | Towcester | 2026 |
| Ansome Ltd | Truro | 2005 |
| Anson Arts Coaching Limited | London | 2025 |
| Anson Commercial Ltd | Glasgow | 2026 |
| Anson Evaluate Ltd | Barnsley | 2013 |
| Anson Game Limited | Bishops Stortford | 2016 |
| Anson Grove Ltd | Fivemiletown | 2008 |
| Anson House 6 Limited | Newcastle Upon Tyne | 2021 |
| Anson House Ltd | Woking | 2025 |
| Anson Planning Ltd | Swindon | 2023 |
| Anson Property Management Limited | Exeter | 2002 |
| Anson Resolution Ltd | London | 2014 |
| Ansong Accounting Limited | London | 2014 |
| Ansong Associates Limited | Feltham | 2010 |
| Ansonia Consulting Ltd | Sandy | 2013 |
| Ansonics Consulting Ltd | Rochester | 2016 |
| Ansons Consulting Ltd | Edinburgh | 2011 |
| Ansons Solicitors Limited | Lichfield | 2015 |
| Ansor Environment Limited | London | 2010 |
| Ansor PTS Limited | London | 2005 |
| Ansor Ventures Services Limited | London | 2011 |
| Anspro Ltd | Aberdeen | 2018 |
| Ansric Limited | Taunton | 2025 |
| Anssi Consulting Ltd | Mildenhall | 2019 |
| Anstalt Limited | Oswestry | 1988 |
| Anstalt Systemelektronik (UK) Limited | London | 2018 |
| Anstar Rail Limited | Norwich | 2017 |
| Anstee & Ware Property Limited | Stonehouse | 1998 |
| Anstee Gorst Ltd | St. Neots | 2015 |
| Anstee Medical Services Limited | Newcastle Upon Tyne | 2023 |
| Anstera Tax Limited | Harrow | 2017 |
| Anstey & Associates Limited | Northants | 2006 |
| Anstey Barton Limited | Tiverton | 2000 |
| Anstey Bond Corporate Finance Limited | London | 2015 |
| Anstey Bond Financial Services Limited | London | 2015 |
| Anstey Bond Group Limited | London | 2015 |
| Anstey Bond International Limited | London | 2015 |
| Anstey Bond Profit Limited | London | 2015 |
| Anstey Bond Tax Limited | London | 2015 |
| Anstice Accounting Limited | Coleford | 2003 |
| Anstiebury GAS Services Limited | Dorking | 2020 |
| Anstis Consultancy Limited | Didcot | 2007 |
| Anstis Surveying Limited | Taunton | 2017 |
| Anston Consulting Ltd | Nottingham | 2025 |
| Anston Engineering Services Limited | Sheffield | 2024 |
| Anston Food and Hygiene Consultants Limited | Sheffield | 2020 |
| Anston Trustees Limited | London | 1993 |
| Anstone Consulting Limited | Tiverton | 1998 |
| Anstone Real Estate Ltd | Stockport | 2024 |
| Anstoris Limited | London | 2016 |
| Anstow Limited | High Wycombe | 2012 |
| Anstruc Limited | Stonehaven | 2014 |
| Anstruther GC Limited | Winchester | 2010 |
| Ansturo Limited | Hayling Island | 2014 |
| Ansun Consultants Ltd | St. Asaph Business Park | 2010 |
| Ansuron Consultancy Limited | Luton | 2019 |
| Answer 42 Ltd | Bury St. Edmunds | 2023 |
| Answer 4U Corporate Limited | Nottingham | 2011 |
| Answer the Public Holdings Ltd | Staines-Upon-Thames | 2020 |
| ANSWER4U Limited | Nottingham | 2004 |
| Answers ARE OUT There Ltd | London | 2025 |
| Answers Management Limited | Stockport | 2015 |
| Answers to Business Limited | Leicester | 2009 |
| Answr Global Ltd | London | 2025 |
| ANT Accounting Ltd | Colchester | 2020 |
| ANT Advanced Engineering Ltd | Stamford | 2024 |
| ANT Consultancy Limited | Hereford | 2022 |
| ANT Data and Grid Digitalisation Solutions Ltd | London | 2022 |
| ANT Dewson Ltd | Buxhall | 2016 |
| ANT Duncan Photography Limited | Milton Keynes | 2014 |