| ADM Legal Services Ltd | Walsall | 2024 |
| ADM Trading Ltd | Glasgow | 2025 |
| Adman Consultancy Limited | Hull | 2012 |
| Admicra IT Services Limited | Nottingham | 2011 |
| Admin & Reception Co Ltd | Westerham | 2025 |
| Admin Fairy Ltd | Kidderminster | 2021 |
| ADMIN4IT Ltd. | Wakefield | 2008 |
| Adminiti Limited | Banstead | 2019 |
| Admiral Car Washes Ltd | St. Neots | 2017 |
| Admiral Joinery Limited | Edinburgh | 2018 |
| Admiral Pest Management Limited | Chelmsford | 1986 |
| Admiral Property Investments Limited | Milton Keynes | 2011 |
| Admiral Self Storage Ltd | Walsall | 2000 |
| Admiral Translations Limited | Leamington Spa | 1996 |
| Admirals Way Investments Limited | London | 2016 |
| Admire Security Ltd | Southall | 2018 |
| Admire Your Floor Ltd. | Reading | 2006 |
| Admirebodypiercing Ltd | Ormskirk | 2024 |
| Admiro Ltd | Eastbourne | 2014 |
| Admission Control (UK) Ltd | Northwich | 2013 |
| Admodum IT Ltd | Hickstead | 2020 |
| ADN Barber Ltd | Liverpool | 2024 |
| ADN Cleaning Services Limited | London | 2008 |
| ADN Computers Ltd | London | 2025 |
| ADN Fundraising Ltd | London | 2024 |
| ADN Roofing Ltd | Forest Row | 2017 |
| Adnams Trust Company Limited | Southwold | 1992 |
| Adnan Consultancy Ltd | Mitcham | 2016 |
| Adnan Duran Ltd | Upminster | 2022 |
| Adnan Limited | Edinburgh | 2014 |
| Adnix Inc Ltd | Mansfield | 2024 |
| Adnob-Roses Ltd Ltd | Peterborough | 2018 |
| ADO Holdings Limited | Bexley | 2018 |
| ADO16.INFO Limited | Guisborough | 2016 |
| Adoda Ltd | Bedfordshire | 2025 |
| Adom Shipping Logistics Limited | Calne | 2017 |
| Adomar Ltd | London | 2025 |
| Adomi-Qam Limited | Gravesend | 2026 |
| Adonai Bible Church | Paisley | 2007 |
| Adonai Food Store Ltd | Hull | 2020 |
| Adonai Salvation Ministries Limited | Wellingborough | 2016 |
| Adonia Aesthetics Manchester Ltd | Manchester | 2016 |
| Adonia Boutique Hammam Spa Limited | Westcliff-On-Sea | 2023 |
| Adonis Supplement Ltd | Falmouth | 2026 |
| Adoption IS 4 U CIC | Solihull | 2023 |
| Adoption UK Charity | Banbury | 2015 |
| Ador MII Beauty and Aesthetics Ltd | Ebbw Vale | 2025 |
| Adora Beauty and Care Ltd | Bushey | 2025 |
| Adora Clinic Ltd | London | 2024 |
| Adora Hair Ltd | Wembley | 2023 |
| Adora Spa Ltd | Northampton | 2022 |
| Adora Wellness Farm Limited | Stratford-Upon-Avon | 2025 |
| Adorabelle Laser Ltd | Paignton | 2024 |
| Adorable Heirs Childcare Limited | London | 2018 |
| Adorable Life Services Ltd. | London | 2024 |
| Adorable UK Services Ltd | Grays | 2017 |
| Adoration Ministry Worldwide, United Kingdom. | London | 2017 |
| Adore Beauty and Tanning Ltd | Leigh-On-Sea | 2011 |
| Adore Beauty Rooms Ltd | Essex | 2024 |
| Adore Centre Ltd | London | 2023 |
| Adore Church | Birmingham | 1995 |
| Adore Hair and Beaute Ltd | Lutterworth | 2026 |
| Adore Hair and Beauty Ltd | Bristol | 2020 |
| Adore Hair Extensions Ltd | Bristol | 2025 |
| Adore Hairdressing Ltd | Manchester | 2018 |
| Adore Herbal Salon and Spa Ltd | Leicester | 2021 |
| Adore ME Clinic Ltd | Caterham | 2021 |
| Adore Nail & Beauty Ltd | Aylesbury | 2024 |
| Adore Nail&Spa Ltd | Salisbury | 2019 |
| Adore Nails Ltd | London | 2019 |
| Adore Paisley Limited | Paisley | 2025 |
| Adored Beauty Ltd | Stoke-On-Trent | 2022 |
| Adored Events Limited | Manchester | 2021 |
| Adoring Beauty Limited | London | 2024 |
| Adorn (Salisbury) Ltd | Salisbury | 2016 |
| Adorn Advertising Limited | Essex | 2002 |
| Adorn Aesthetic London Ltd | Watford | 2021 |
| Adorn Aesthetics Hampshire Ltd | Whitchurch | 2020 |
| Adorn Aesthetics Studio Limited | Hull | 2023 |
| Adorn Beauty and Care Ltd | Harrow | 2010 |
| Adorn Beauty Limited | Watford | 2008 |
| Adorn by Lorr Ltd | Luton | 2026 |
| Adorn Cosmetics Limited | Sheffield | 2017 |
| Adorn Design Studio Limited | Chesham | 2018 |
| Adorn Hair & Beauty Limited | Wembley | 2015 |
| Adorn Laser Ltd | London | 2025 |
| Adorn Spa Limited | Watford | 2010 |
| Adorned by the Divine Ltd | London | 2022 |
| Adorned Piercing and Jewellery Ltd | Haverhill | 2023 |
| Adornedbyjay Ltd | London | 2025 |
| Adornment by Adelle Ltd | Walsall | 2026 |
| Adoro Limited | Leeds | 2025 |
| Adoty Services Ltd | St. Neots | 2018 |
| Adoula Ltd | London | 2025 |
| Adovan 25 Limited | Radlett | 2016 |
| ADP Art Ltd | Stevenage | 2019 |
| ADP Events Ltd | Sheffield | 2018 |
| ADP Global Connexions Limited | Unit 110 | 2019 |
| ADP Holdings Inc Ltd | London | 2026 |
| ADP Management Consulting Ltd | London | 2026 |