| Anton Florek Associates Ltd | Deeside | 2018 |
| Anton Innovation Ltd | Stockton-On-Tees | 2017 |
| Anton Jeffes Ltd | Hornchurch | 2021 |
| Anton Lang Planning Services Limited | Newcastle Upon Tyne | 2008 |
| Anton Lennon Limited | Edinburgh | 2016 |
| Anton Manor Services Limited | Tenterden | 2008 |
| Anton Obholzer Consulting Limited | London | 2003 |
| Anton Pilhill Limited | Hants | 2004 |
| Antonella Russo Limited | Reading | 2016 |
| Antoni Fields IIP Settlement 2003 Limited | Manchester | 2003 |
| Antonia Boyle Design Limited | Alexandria | 2019 |
| Antonia Brandes Consultancy Limited | Sudbury | 2018 |
| Antonia Grace Hawkins Ltd | London | 2023 |
| Antonia Investments Limited | Sale | 2022 |
| Antonia Jolles Ltd | Sherborne | 2022 |
| Antonia LEE Consulting Ltd | London | 2025 |
| Antonia LIU Ltd | Farnham | 2025 |
| Antonia Pascal Consultancy Ltd | Romford | 2024 |
| Antonia Reeve Consulting Limited | London | 2018 |
| Antonia Taylor PR + Communications Ltd | Reading | 2019 |
| Antonia Wright Limited | Stroud | 2020 |
| Antoniades Limited | London | 2003 |
| Antonics UK Limited | Burscough | 2022 |
| Antonicus Limited | London | 2026 |
| Antonine Investment Managers Limited | Glasgow | 2012 |
| Antonine Property Holdings Ltd | Glasgow | 2024 |
| Antonino Cuffaro Limited | Coventry | 2020 |
| Antonio Consulting Ltd | Swindon | 2025 |
| Antonio Ferrara Consultancy Limited | Nottingham | 2016 |
| Antonio Guillen Legal Limited | Stockport | 2015 |
| Antonio Leanza Companies Limited | Ilford | 2008 |
| Antonio Mendes Consultancy Limited | Fareham | 2025 |
| Antoniou Enterprises Ltd | London | 2023 |
| Antonius & Victoria Limited | Wateringbury | 2017 |
| Antonius Solutions Limited | London | 2020 |
| Antonorus Limited | London | 2017 |
| Antony & Co Accountants Ltd | Sutton Coldfield | 2011 |
| Antony Allen Consulting Limited | Matlock | 2021 |
| Antony Ball Consulting Limited | Doncaster | 2025 |
| Antony Batty & Company Ltd | London | 2025 |
| Antony Bridge Ltd | Malvern | 2020 |
| Antony Crossfield Limited | London | 2007 |
| Antony Draper Ltd | Gloucester | 2025 |
| Antony Dubber Ltd | Buntingford | 2024 |
| Antony Edwards Associates Ltd | Hereford | 2012 |
| Antony Edwards Surveyors Ltd | Chertsey | 2016 |
| Antony Fanshawe Limited | Winchester | 2022 |
| Antony Fawbert Limited | Chesterfield | 2013 |
| Antony Gray Consulting Limited | Hants | 2007 |
| Antony Harvey Executive Limited | Haddington | 2025 |
| Antony Hodari Holdings Limited | Manchester | 2012 |
| Antony Hooper Ltd | Bristol | 2016 |
| Antony Iveson Management Services Limited | Bishop Auckland | 2019 |
| Antony J Stewart Ltd | London | 2016 |
| Antony Jones Consultancy Services Ltd | Bilston | 2015 |
| Antony Jones Limited | Harrow | 2004 |
| Antony Katrina Associates Limited | Bristol | 2019 |
| Antony Marquis Professional Services Limited | Kingston Upon Thames | 2012 |
| Antony Meire Associates Limited | Canterbury | 2012 |
| Antony Norris ACA Ltd | Sheffield | 2003 |
| Antony Oliver Consulting Limited | London | 2015 |
| Antony Overseas Ltd | London | 2017 |
| Antony Parkinson Limited | London | 2026 |
| Antony Patrick Associates Ltd | Putney | 2014 |
| Antony Rookes Limited | Hedon | 2004 |
| Antony Royce Consultancy Limited | Orpington | 2015 |
| Antony Sampson Associates Limited | London | 2017 |
| Antony Smith Consulting Limited | London | 2026 |
| Antony Turner Limited | Oxford | 2006 |
| Antony Walton Web & Graphic Design Limited | Carshalton | 2011 |
| Antony Weinberg Limited | Hendon | 2002 |
| Antorium Ltd | Hamilton | 2024 |
| Antou Corporation Limited | Basildon | 2010 |
| Antoun Consultancy Ltd | Leamington Spa | 2016 |
| Antovation Ltd | London | 2020 |
| Antps Holdings Ltd | London | 2026 |
| Antrams Holdings Limited | Brighton | 2021 |
| Antratec Services Ltd | West Malling | 2021 |
| Antravia Ltd | London | 2025 |
| Antrepolondon Ltd | South Croydon | 2019 |
| Antrim Associates Ltd | Wolverhampton | 2020 |
| Antrim Capital Limited | London | 2018 |
| Antrim Metals Limited | London | 2015 |
| Antrim Partners Ltd | Brighton | 2026 |
| Antrina Ltd | London | 2007 |
| Antrobus Associates Limited | Crewe | 2020 |
| Antrobus Consulting Limited | Stroud | 2017 |
| Antrobus Inspection Services Limited | Stockton-On-Tees | 2010 |
| Antrobus Logistics Consultancy Ltd | Heywood | 2014 |
| Antrobus Services Ltd | Deal | 2012 |
| Antrobus Solicitors Limited | Crewe | 2013 |
| Antrobus Solutions Limited | Windsor | 2019 |
| Antrodia Camphorata Wellness Limited | Edinburgh | 2026 |
| Antronics Limited | Basingstoke | 1998 |
| Antrova Insights Ltd | London | 2024 |
| Antroverse Limited | Warrington | 2025 |
| Antrum Energy Trilemma Ltd | Leicester | 2025 |
| Antrum Partners Limited | Wantage | 2013 |
| Ants & Bees Consulting Ltd | London | 2023 |
| Ants Advertising and Marketing Ltd | London | 2023 |