| Adchaya Properties Limited | Hayes | 2025 |
| Adcin Properties Limited | London | 2015 |
| Adco Holdings Ltd | Cardiff | 2018 |
| Adco Projects Ltd | Loughborough | 2022 |
| Adco Property Investments Ltd | Antrim | 2015 |
| Adco Property Ltd | Cardiff | 2016 |
| Adcobs NC Limited | London | 2020 |
| Adcock Holdings Ltd | Bury St. Edmunds | 2024 |
| Adcock Property Investments Ltd | Cambridge | 2023 |
| Adcocks Property Company Limited | Peterborough | 2020 |
| Adcol Properties Limited | Poplar | 2016 |
| Adcom Limited | Dudley | 2025 |
| Adcom Supported Living Services CIC | Dudley | 2025 |
| Adcor Property Ltd | Chesterfield | 2017 |
| Adcore Limited | London | 2019 |
| Adcredidi Ltd | Horsham | 2026 |
| Adct Ltd | Liverpool | 2021 |
| ADD & ADD Limited | Woking | 2024 |
| ADD (North East) Ltd | Sunderland | 2010 |
| ADD a Level Limited | Sutton | 1999 |
| ADD a Prop Ltd | London | 2022 |
| ADD a Splash Limited | Dunfermline | 2021 |
| ADD Brothers Ltd | London | 2024 |
| ADD Commercial Properties Ltd | Inverness | 2012 |
| ADD Cubit Limited | London | 2004 |
| ADD Estates Ltd | Wetherby | 2011 |
| ADD Global Properties Limited | London | 2023 |
| ADD Housing Ltd | Manchester | 2025 |
| ADD Investments Holdings Limited | London | 2022 |
| ADD Investments Limited | London | 2019 |
| ADD Lettings Ltd | Perth | 2023 |
| ADD Living Ltd | London | 2013 |
| ADD M3 for Property Investment and Management Ltd | Ashford | 2019 |
| ADD MOR Homes Ltd | Coventry | 2023 |
| ADD on Projects JG Limited | Hounslow | 2020 |
| ADD Properties (Yorkshire) Ltd | Leeds | 2025 |
| ADD Properties Global Ltd | Stockport | 2021 |
| ADD Properties Ltd | London | 2011 |
| ADD Property Holdings Ltd | Leeds | 2022 |
| ADD Property Hub Ltd | Hemel Hempstead | 2021 |
| ADD Property Management Ltd | Waltham Cross | 2021 |
| ADD Property Value Limited | Harrow | 2020 |
| ADD Real Estate Ltd | Newport | 2016 |
| ADD Worth Properties Limited | Barnsley | 2024 |
| Add-On Investments Ltd | Stanmore | 2023 |
| ADD.4PROPERTY Ltd | Wimborne | 2017 |
| Add/Margate Limited | Milton Keynes | 2017 |
| Add/Uk Limited | Milton Keynes | 2014 |
| Adda (N.I.) Ltd | Cookstown | 2012 |
| Adda Estates Ltd | Basildon | 2025 |
| Adda Group Ltd | Dunstable | 2023 |
| Adda Partners Limited | London | 2026 |
| Adda Property Limited | Thame | 2019 |
| Addaamo Commercial Spaces Limited | Chesterfield | 2023 |
| Addaamo Residential Spaces Limited | Chesterfield | 2023 |
| Addai Property Group Ltd | Bromley | 2025 |
| Addaibro Ltd | Alloa | 2025 |
| Addaj Properties Limited | Peterborough | 2020 |
| Addall Ltd | Leeds | 2021 |
| Addam Properties Ltd | Nuneaton | 2025 |
| Addama Limited | Cheadle | 2022 |
| Addams Properties & Investment Ltd | London | 2024 |
| Addan Properties Limited | Barnsley | 2017 |
| Addas Properties Ltd | London | 2021 |
| Addas Relocation Homestay Solution Ltd | London | 2021 |
| Addasdy Ltd | Swansea | 2021 |
| Addbricks Limited | Kempston | 2024 |
| Addc Properties Ltd | Enfield | 2026 |
| Addcall Limited | Lancashire | 1999 |
| Addcity Limited | Stanley | 2021 |
| Adde Properties Limited | Doncaster | 2025 |
| Added Development Limited | Bolton | 2025 |
| Added Housing Ltd | Middlesbrough | 2020 |
| Added Value Capital Ltd | London | 2018 |
| Added Value Management Limited | Belfast | 2015 |
| Addeh Property Limited | Norwich | 2026 |
| Addenbrooke Investments Ltd | Slough | 2026 |
| Addenbrookes Properties Limited | London | 2002 |
| Addeo Properties Limited | London | 2021 |
| Adder Properties Limited | Leicester | 2018 |
| Adderbury Property Limited | Banbury | 2016 |
| Adderley Hill Properties Limited | Bromsgrove | 2017 |
| Adderley Properties Limited | Whitstable | 2024 |
| Adders Property Limited | Barrow-In-Furness | 2024 |
| Adderstone (201) Limited | Newcastle Upon Tyne | 2017 |
| Adderstone (207) Limited | Newcastle Upon Tyne | 2018 |
| Adderstone (208) Limited | Newcastle Upon Tyne | 2018 |
| Adderstone (209) Limited | Newcastle Upon Tyne | 2018 |
| Adderstone (210) Limited | Newcastle Upon Tyne | 2001 |
| Adderstone (211) Limited | Jesmond | 2021 |
| Adderstone (213) Limited | Newcastle Upon Tyne | 2017 |
| Adderstone (214) Limited | Newcastle Upon Tyne | 2018 |
| Adderstone (216 COM) Limited | Newcastle Upon Tyne | 2020 |
| Adderstone (217) Limited | Newcastle Upon Tyne | 2020 |
| Adderstone (221) Limited | Jesmond | 2020 |
| Adderstone (223) Limited | Jesmond | 2021 |
| Adderstone (224) Limited | Jesmond | 2021 |
| Adderstone 17 Management Company Limited | Newcastle Upon Tyne | 2001 |
| Adderstone Developments (113) Limited | Newcastle Upon Tyne | 2023 |
| Adderstone Hall Ltd | Belford | 2025 |