| Anthony Spencer Dental Laboratory Ltd | Exeter | 2012 |
| Anthony Stratton Limited | Dorchester | 2017 |
| Anthony Toby Homes Trust | Reading | 2004 |
| Anthony Ugochukwu Igboanugo Ltd | Rochdale | 2023 |
| Anthony Waring Limited | Weybridge | 2011 |
| Anthony Williams Pathology Limited | Stourport-On-Severn | 2024 |
| Anthonydep Ltd | Basildon | 2023 |
| Anthonypillai Ltd | Maidstone | 2023 |
| Anthonyraj Ltd | Barking | 2025 |
| Anthony’S Care Support Ltd | South Harrow | 2025 |
| Anthosupport Limited | Nottingham | 2025 |
| Anthrobee Wellness Ltd | Tadworth | 2024 |
| Anthrobotanica Limited | Sidcup | 2013 |
| Anti Ageing Centre Ltd | Woodford Green | 2025 |
| Anti Wrinkle Clinic Limited | London | 2019 |
| Anti-Ageing International Ltd | Malmesbury | 2001 |
| Antiapathy Ltd. | London | 2021 |
| Antica Limited | Edinburgh | 2004 |
| Antidote Holdings Ltd | Banstead | 2021 |
| Antidote LDN Ltd | Banstead | 2021 |
| Antidote Medical Limited | Leeds | 2015 |
| Antigen MC Ltd | Durham | 2019 |
| Antigoni Kyriakidou Limited | Nottingham | 2021 |
| Antini Ltd | London | 2005 |
| Antioch Limited | Fareham | 2009 |
| Antipodean Telehealth Limited | Kingston Upon Thames | 2024 |
| Antmit Limited | Edinburgh | 2015 |
| Antn Fitness Ltd | London | 2022 |
| Anto Combine Ltd | London | 2010 |
| Antodave Ltd | Benfleet | 2020 |
| Antogo Ltd | Eastbourne | 2014 |
| Antoine Care Ltd | Leeds | 2016 |
| Antoinette Hamilton Aesthetics Ltd | Bury | 2020 |
| Antomena Ltd | Uxbridge | 2014 |
| Anton Care Services Limited | London | 2026 |
| Anton Medical Ltd | London | 2016 |
| Antonella Burgio Ltd | Grays | 2012 |
| Antoni & Rienzie Limited | London | 2007 |
| Antonia Enterprise Ltd | St. Neots | 2019 |
| Antonia James Limited | Oxford | 2025 |
| Antonia Kirkby Limited | Warrington | 2022 |
| Antonia Rose Ltd | Manchester | 2022 |
| Antonia Salzl Ltd | Southsea | 2017 |
| Antoniab Ltd | Bury St. Edmunds | 2019 |
| Antonine Care Limited | Inverness | 2009 |
| Antonine Court Ltd | Glasgow | 1999 |
| Antonine Estates Ltd. | Glasgow | 2011 |
| Antonio Marie Claret Ventures Ltd | Hampshire | 2015 |
| Antonio R M Alves Ltd | Romford | 2021 |
| Antoniomarie Limited | Bolton | 2018 |
| Antonios Health Ltd | New Malden | 2023 |
| Antonios K Limited | Bexhill-On-Sea | 2014 |
| Antonios Medical Services Limited | Spalding | 2010 |
| Antonopoulos Oral Care Ltd | Edinburgh | 2023 |
| Antony Austin Optometrists Limited | Woodford Green | 1998 |
| Antony Fitton Limited | Newton Abbot | 2013 |
| Antony J Bush Limited | Neston | 2007 |
| Antony Nelson Limited | Torquay | 2024 |
| Antoziggy Ltd | Brighton | 2020 |
| Antppek Limited | Gerrards Cross | 2012 |
| Antralan Limited | Sittingbourne | 2021 |
| Antrig Limited | Dundee | 2016 |
| Antrim & Newtownabbey Seniors' Forum | Newtownabbey | 2001 |
| Antrim Care Services Limited | Norwich | 2004 |
| Antrim Massage Ltd | Belfast | 2020 |
| Antrobus (Boldmere) Limited | Sutton Coldfield | 2011 |
| Antrobus Medical Limited | Eltham | 2015 |
| Antryvale Limited | London | 1980 |
| Antton UK Ltd | Manchester | 2018 |
| Anttzchiro Ltd | Calne | 2019 |
| Antur Dyffryn Ogwen CYF. | Bangor | 1986 |
| Antur Tanat-Cain Cyfyngedig | Llangedwyn Mill Llangedwyn | 1984 |
| Antvalvic Limited | Erith | 2025 |
| Antwerp Dental Academy Limited | Cambridge | 2017 |
| Antwerp Dental Group Ltd | Cambridge | 2018 |
| Antwi Limited | Mildenhall | 2009 |
| Antwi Medical Services Limited | Huntingdon | 2026 |
| Antwi's Courtesy Ltd | Milton Keynes | 2025 |
| Antwiwaah Services Limited | Luton | 2021 |
| Antwous Limited | Romford | 2010 |
| Anty Limited | Birkenhead | 2019 |
| Antz Junction | Manchester | 2012 |
| ANU Enterprises PVT Ltd | Plymouth | 2022 |
| ANU Limited | Wolverhampton | 2019 |
| ANU Marma Therapy Ltd | Royston | 2024 |
| ANU Medical Ltd | England | 2023 |
| Anu.Stella Limited | London | 2018 |
| ANU4 Limited | Dagenham | 2012 |
| Anube Ltd | Lincoln | 2024 |
| Anubis Earth Ltd | Ascot | 2024 |
| Anubix Ltd | High Wycombe | 2023 |
| Anufem Medical Consultancy Services Limited | London | 2026 |
| Anugbule & Sons Ltd | Leighton Buzzard | 2022 |
| Anugraha Medical Limited | | 2005 |
| Anugraham HCA Ltd | Birmingham | 2023 |
| Anuhbu Limited | London | 2014 |
| Anujai Group Ltd | St. Ives | 2018 |
| Anukta Limited | Edgware | 2021 |
| Anulekha Healthcare Ltd | London | 2025 |
| Anuli Health Limited | Harlow | 2022 |