| Anterior Management Limited | Warwickshire | 2002 |
| Anterior Vision Limited | Warwickshire | 2005 |
| Anteris Management Consultancy Ltd | Scarborough | 2022 |
| Anteron Limited | Congleton | 2014 |
| Anteroom Limited | Fleet | 2026 |
| Antestare Limited | Rochford | 2017 |
| Antev Limited | Weybridge | 2013 |
| Antevorta Consultants Limited | Dunstable | 2013 |
| Antex Interiors Ltd | Surbiton | 2024 |
| Antfrogboy Limited | North Shields | 2020 |
| Antha Consulting Limited | Hebden Bridge | 2025 |
| Anthaven Limited | Kent | 1988 |
| Anthea L Allen Limited | Nottingham | 2011 |
| Anthea Whitton Limited | York | 2023 |
| Anthem (UK) Ltd | West Malling | 1998 |
| Anthem Consultancy Limited | Cleckheaton | 2018 |
| Anthem Consultants Ltd | London | 2020 |
| Anthem Corp Ltd | Longfield | 2015 |
| Anthem Investments Limited | Cleckheaton | 2017 |
| Anthem Legal Limited | Elgin | 2018 |
| Anthem Revenue Advisory Ltd | London | 2023 |
| Anthem Ventures Ltd | Manchester | 2022 |
| Anthemics Limited | Haywards Heath | 2024 |
| Anthemion Design Limited | London | 2011 |
| Anthemis Limited | London | 2014 |
| Anther Brands Ltd | Kingston Upon Thames | 2026 |
| Anthera Remediation Technologies Ltd | Chard | 2025 |
| Anthesis (UK) Limited | London | 1997 |
| Anthesis Consulting (UK) Limited | London | 2013 |
| Anthesis Consulting Group Limited | London | 2013 |
| Anthi Grapsa Limited | London | 2017 |
| Anthias Consulting Limited | Cambridgeshire | 2005 |
| Anthill Collective Ltd | London | 2024 |
| Anthion Ltd | Stockport | 2026 |
| Anthistle Craven IRX Limited | Buckingham | 2018 |
| Anthocan Ltd | London | 2018 |
| Anthoka Geophysical Ltd | Rainham | 2023 |
| Anthology Group Limited | Gloucestershire | 2015 |
| Anthology London Limited | London | 2014 |
| Anthomania Ltd | London | 2015 |
| Anthoney Consulting UK Ltd | London | 2025 |
| Anthoni CT Partners Limited | Bath | 2020 |
| Anthony & Co Consulting Ltd | Leeds | 2009 |
| Anthony & Co Legal Practitioner Ltd | London | 2024 |
| Anthony & Co Limited | | 1998 |
| Anthony & Susan Norris Trading Limited | Liverpool | 2018 |
| Anthony a Walker Ltd | Grimsby | 2019 |
| Anthony Abbott Limited | Halesworth | 2002 |
| Anthony Associates Limited | Newbury | 2011 |
| Anthony Baker Ltd | Manchester | 2022 |
| Anthony Bates Limited | Hove | 2013 |
| Anthony Berendt Consulting Limited | Oxford | 2018 |
| Anthony Better Solutions Limited | Harpenden | 2026 |
| Anthony Bird Consulting Limited | Coventry | 2017 |
| Anthony Blake Financial Planning Ltd | Airdrie | 2026 |
| Anthony Boardman Designs Limited | Manchester | 1995 |
| Anthony Bowles Architecture Ltd | Bradford-On-Avon | 2015 |
| Anthony Brennan & Co Ltd | Liverpool | 2019 |
| Anthony Brookes Surveys Limited | Bristol | 2000 |
| Anthony Buckley & Constantine Limited | Halesowen | 1951 |
| Anthony Burrill Design Ltd | London | 2012 |
| Anthony Carden Holdings Limited | Stafford | 2015 |
| Anthony Carter Compliance Limited | Sunderland | 2025 |
| Anthony Champion Limited | Droitwich | 2021 |
| Anthony Chandler Associates Ltd | Surbiton | 2012 |
| Anthony Clare Ltd | Bishop'S Stortford | 2021 |
| Anthony Clark & Co Limited | Lincoln | 2015 |
| Anthony Clifton Consulting (a C C) Limited | Bushey | 2018 |
| Anthony Collins Limited | West Midlands | 1990 |
| Anthony Consulting Limited | Aylestone Village | 2022 |
| Anthony COX Designers Ltd | Wellington | 2018 |
| Anthony Croft Ezekiel Limited | | 1992 |
| Anthony Currie Consulting Limited | Sheffield | 2026 |
| Anthony Cutler Ltd | London | 2003 |
| Anthony D. Wilson Ltd. | Carlisle | 2011 |
| Anthony Daniel Associates Ltd | London | 2023 |
| Anthony Dawson Technical Ltd | Frizington | 2025 |
| Anthony Dawton Photography Ltd | London | 2007 |
| Anthony Day Associates Ltd | Leics, Market Harborough | 2024 |
| Anthony Devonald Richards Limited | Llanelli | 2017 |
| Anthony Docks Company Ltd | Cardiff | 2024 |
| Anthony Doores Safety Solutions Limited | Leicester | 2024 |
| Anthony Douglas Consultancy Ltd | London | 2019 |
| Anthony Eamens Design Ltd | Epsom | 2019 |
| Anthony Emery Ltd | Birmingham | 2018 |
| Anthony Endfield IIP Settlement 2003 Limited | Manchester | 2003 |
| Anthony Eydon Limited | Daventry | 2026 |
| Anthony Farnsworth Management Services Limited | Consett | 2014 |
| Anthony Fitzgerald Photography Ltd | London | 2014 |
| Anthony Forrester Design Ltd | Warrington | 2025 |
| Anthony G Harrison Ltd | Addlestone | 2024 |
| Anthony Gibson Coaching and Development Ltd | Weybridge | 2024 |
| Anthony Gill Access Ltd | Middlesbrough | 2014 |
| Anthony Gilroy Accountancy Services Limited | Wembley | 1999 |
| Anthony Gold Limited | Radlett, Shenley | 2003 |
| Anthony Gold Solicitors Trust Corporation Limited | London | 2025 |
| Anthony Golding Limited | Tavistock | 2003 |
| Anthony Graham Projects Limited | Poulton-Le-Fylde | 2005 |
| Anthony Greenwood Photography Ltd | Falmouth | 2018 |
| Anthony Haigh Limited | Sunderland | 1968 |