| ANT (GB) Limited | Chelmsford | 2009 |
| ANT Access International Limited | Kingswinford | 2015 |
| ANT Applied New Technologies UK Limited | Norwich | 2023 |
| ANT Aviation Services Ltd | Cambridge | 2024 |
| ANT CGI Limited | Leeds | 2014 |
| ANT Composites Limited | Poole | 2026 |
| ANT Elias Limited | London | 2025 |
| ANT Foundry Ltd | Surbiton | 2021 |
| ANT Impex Ltd. | London | 2023 |
| ANT Mechanical Limited | Southsea | 2016 |
| ANT Neuro UK Limited | Stevenage | 2015 |
| ANT Safety Ltd | London | 2024 |
| Anta Pro Limited | Reading | 2024 |
| Anta Scotland Limited | Tain | 1995 |
| Antarctic Developer & Publisher Ltd | Plymouth | 2022 |
| Antares Concepts Ltd | Mitcham | 2011 |
| Antares Defence Systems Ltd | Ross-On-Wye | 2010 |
| Antares Medical Group Ltd | London | 2024 |
| Antares One Ltd | Hounslow | 2025 |
| Antares Studio Ltd | Glasgow | 2017 |
| Antares Trading Limited | Cambridge | 2022 |
| Antarumi Group (Europe) Limited | London | 2026 |
| Antaz Limited | Harrow | 2005 |
| Ante Mors Ltd | Lancaster | 2023 |
| Antec Engineering Services Ltd | Chorley | 2016 |
| Antec International Limited | Sudbury | 1961 |
| Antech Engineered Solutions Limited | Waterlooville | 2014 |
| Antee Jameela Co Ltd | Tooting | 2025 |
| Antennaware Limited | Belfast | 2020 |
| Antep Dessert Limited | Doncaster | 2023 |
| Antepli Bakery Ltd | London | 2023 |
| Anteriors (Scotland) Limited | Kilwinning | 2013 |
| Antex (Electronics) Limited | Plymouth | 2003 |
| Anth Leyshon Site Services Ltd | Billingham | 2022 |
| Anthea Grace Studios Limited | Milton Keynes | 2025 |
| Anthea Pharma Limited | Hertfordshire | 2022 |
| Anthektikos Industries UK Ltd | London | 2025 |
| Anthologie Limited | London | 2017 |
| Anthology Brewing Company Ltd | Leeds | 2017 |
| Anthony a Davies Limited | Newport | 1997 |
| Anthony Alan Foods Ltd | Stockton-On-Tees | 2001 |
| Anthony Axford Limited | Farnworth | 1979 |
| Anthony Best Dynamics Limited | Bradford On Avon | 1982 |
| Anthony Brown Creative Consulting Ltd | Devizes | 2014 |
| Anthony Colins Limited | Bolton | 2014 |
| Anthony Epworth Limited | Nottingham | 2002 |
| Anthony Harris Carpentry Ltd | Newport | 2006 |
| Anthony Hill Designs Limited | Leicester | 2022 |
| Anthony Hill Ltd | Bury | 2024 |
| Anthony Holt & Sons Ltd | Mill Hill | 2015 |
| Anthony Juer Lighting Limited | Bracknell | 1948 |
| Anthony Kinns Aviation (Services) Limited | Bedford | 1990 |
| Anthony Lewis Limited | Shrewsbury | 2014 |
| Anthony Lloyd Furniture Limited | Ware | 2022 |
| Anthony Mark Kitchens Ltd | Hove | 2024 |
| Anthony Nixon Furniture Limited | Durham | 2002 |
| Anthony P Williams Limited | Newport | 2018 |
| Anthony Paulo Interiors Limited | Norwich | 2019 |
| Anthony Peters Manufacturing Company Limited | Melton Mowbray | 1997 |
| Anthony Sanford Ltd | Bury St. Edmunds | 2016 |
| Anthony Short Installations Limited | Carshalton | 2025 |
| Anthony Theakston Ceramics Limited | Gainsborough | 2016 |
| Anthony's Rollingstock Ltd | London | 2022 |
| Anthonys Carpentry & Joinery Ltd | Morden | 2025 |
| Anthorpe Enterprises Limited | Weybridge | 2012 |
| Anthracite Rose Limited | King'S Lynn | 2021 |
| Anthrotek Ltd | Newmarket | 2024 |
| Anti Gravity Clothing Ltd | London | 2026 |
| Anti Idol Ltd | Wolverhampton | 2019 |
| Anti Spike Straw Ltd | Liverpool | 2022 |
| Anti Vandal Cabins Hull Limited | Hull | 2024 |
| Anti Vandal Solutions Ltd | Hull | 2024 |
| Anti-Climb Guards Limited | Crowborough | 1998 |
| Anti-Corrosion Solutions Limited | Darlington | 2025 |
| Antibody Store Limited | Doncaster | 2016 |
| Antic Brewing Limited | London | 2009 |
| Antich & Sons (Huddersfield) Limited | Huddersfield | 2004 |
| Anticlimax Ltd | Hertford | 2024 |
| Antics (Furniture) Limited | Hampton Wick | 2008 |
| Antiference Window Systems Ltd | Andover | 2025 |
| Antilocapra Solutions Ltd | West Midlands | 2023 |
| Antilogia Ltd | London | 2025 |
| Antimicrobial Materials Limited | Manchester | 2021 |
| Antinda Care Limited | Harlow | 2018 |
| Antique Apothecary Ltd | Cheam | 2009 |
| Antique Christ Limited | Falmouth | 2020 |
| Antique Oriental Rugs Limited | Moreton-In-Marsh | 2016 |
| Antique Rugs Ltd | Isleworth | 2019 |
| Antique Stained Glass Ltd | Wells | 2021 |
| Antique Style Doors (UK) Limited | Leeds | 2004 |
| Antique Tractor Parts Limited | Hitchin | 2010 |
| Antiques by Design Limited | Maldon | 2001 |
| Antiquity Marble Limited | South Yorkshire | 1990 |
| Antiva-Steela Ltd | London | 2016 |
| Antkahn Limited | Bradford | 2014 |
| Antler Interiors Limited | Bradford | 2020 |
| Antlia (Services) Limited | Stockton-On-Tees | 2014 |
| Anto Drive Ltd | Poole | 2025 |
| Anto Property Ltd | Manchester | 2021 |
| Antobot Ltd. | Cambridge | 2016 |