| AD Contracts (Airdrie) Limited | Airdrie | 2017 |
| AD Crystal Cleaning Services Limited | London | 2025 |
| AD Details Plus Ltd | Wallasey | 2022 |
| AD DIY Employment Ltd | Sutton | 2023 |
| AD Equestrian Ltd | Waterlooville | 2020 |
| AD Facilities Management Ltd | Croydon London | 2024 |
| AD Fencing and Plant Ltd | Llandeilo | 2015 |
| AD Fire Limited | Warwick | 2012 |
| AD Fire Safety Ltd | Bourne | 2022 |
| AD Florem Limited | Manchester | 2015 |
| AD Frameworks Ltd | Whitchurch | 2022 |
| AD Fuels Limited | Ely | 2017 |
| AD Futura Ltd | Cambridge | 2018 |
| AD Gardening Services Ltd | Warrington | 2026 |
| AD Generator Rentals Ltd | Glastonbury | 2021 |
| AD Global Partners Ltd | Aylesbury | 2018 |
| AD Group Global Limited | Manchester | 2024 |
| AD Group Limited | Poole | 2016 |
| AD Group Services Ltd | Royston | 2018 |
| AD Hill Limited | Worcester | 2015 |
| AD Hire Group Ltd | London | 2023 |
| AD HOC Admin Ltd | Edinburgh | 2019 |
| AD HOC Arrangements Limited | Presteigne | 2016 |
| AD HOC Freelance PA Limited | Farnborough | 2013 |
| AD HOC Group Holdings Limited | London | 2017 |
| AD HOC Legal Ltd | Solihull | 2017 |
| AD HOC Minds Ltd | London | 2016 |
| AD HOC Nationwide Ltd | Knebworth | 2022 |
| AD HOC UK Security Ltd | London | 2016 |
| AD Hominem Xxiv Limited | | 2006 |
| AD Honorem Limited | London | 2019 |
| AD Housekeeping Ltd | Bristol | 2024 |
| AD Idem Consulting Limited | Kingston Upon Thames | 2015 |
| AD Idem Marketing Ltd | Chesham | 2014 |
| AD Idem Search Limited | Camberley | 2024 |
| AD Industrial Cleaning Ltd | Port Talbot | 2025 |
| AD Investment Holdings Limited | London | 2004 |
| AD Investment Services Limited | Bonnyrigg | 2026 |
| AD Landscapes & Property Maintenance Ltd | Swansea | 2019 |
| AD Landscapes (Northwest) Limited | Ponciau | 2011 |
| AD Landscapes and Maintenance Limited | Towcester | 2017 |
| AD Landscapes Ltd | Sevenoaks | 2002 |
| AD Landscaping Ltd | Solihull | 2026 |
| AD Latin America Finance | London | 2003 |
| AD Leasing Surrey Ltd | Reigate | 2023 |
| AD LIB Holdings Limited | Bristol | 2004 |
| AD LIB TV Limited | Manchester | 2006 |
| AD Luxury Car Hire Limited | London | 2023 |
| AD Maintenance Yorkshire Limited | Bradford | 2025 |
| AD Marine Services Limited | Fareham | 2006 |
| AD Matocha Limited | Haywards Heath | 2015 |
| AD Meliora Academy Trust | Kings Lynn | 2016 |
| AD Meliora HR Limited | Worcester | 2022 |
| AD Noble Ltd | Whitby | 2023 |
| AD OIL & GAS Advisory Limited | Kingston Upon Thames | 2019 |
| AD Outdoor Solutions Ltd | Leeds | 2024 |
| AD Partners International Ltd | London | 2019 |
| AD Paving & Landscaping Ltd | Durham | 2019 |
| AD Plus Solutions Ltd | Gloucester | 2026 |
| AD Project Management Ltd | Edinburgh | 2022 |
| AD Property (Sussex) Ltd | Newhaven | 2025 |
| AD Property Solutions Ltd | Skelmersdale | 2022 |
| AD Protective Solutions Ltd | Gainsborough | 2019 |
| AD Raolad Ltd | Northampton | 2025 |
| AD REC Services Ltd | London | 2024 |
| AD Recruit Limited | Waterlooville | 2023 |
| AD Rope Tech Limited | Ross-Shire | 2007 |
| AD Russell Ltd | Chertsey | 2024 |
| AD Safety Services Limited | Otley | 2019 |
| AD Security Services Ltd | Slough | 2022 |
| AD Security Solutions Limited | Aylesbury | 2016 |
| AD Services (Cardiff) Ltd | Pontyclun | 2010 |
| AD Services 2010 Ltd | Birmingham | 2019 |
| AD Services Group Ltd | London | 2026 |
| AD Solem Consulting Ltd | London | 2016 |
| AD Sound & Lighting Ltd | Glasgow | 2022 |
| AD Super Ltd | Worcester Park | 2011 |
| AD Surveying Ltd | Leeds | 2021 |
| AD Talent Recruitment Ltd | Wetherby | 2025 |
| AD Taylor Project Management Ltd | London | 2026 |
| AD Tours of Egypt Limited | Warwick | 2012 |
| AD Trailer Hire Ltd | Bury St. Edmunds | 2022 |
| AD Transport & Commercial Repairs Limited | Elland | 2016 |
| AD Travel and Tourism Limited | Bury | 2026 |
| AD Valorem Consulting Limited | Milton Keynes | 2000 |
| AD Westport Limited | London | 2004 |
| AD Window Cleaning Ltd | Wrexham | 2013 |
| AD Window Cleaning Services Ltd | London | 2019 |
| Ad&C Ltd | Aylesbury | 2023 |
| Ad&Mgroup Limited | Worcester Park | 2025 |
| Ad&Sd Cleaning Limited | Oxford | 2023 |
| Ad's Garden Services Ltd | Coventry | 2007 |
| Ad-A Brickbuilding Services Limited | Chatham | 2022 |
| Ad-Med Practice Solutions Ltd | Abbots Langley | 2024 |
| Ad-Visor Services Ltd. | Northchapel | 1990 |
| Ad/Cd Ltd | Watford | 2019 |
| AD1 Services Ltd | London | 2026 |
| AD2 Solutions Ltd | London | 2024 |
| AD2000 Group Ltd | London | 2015 |
| AD32 Management Limited | London | 2025 |