| A1 Heavenly Homes Limited | Waterlooville | 2024 |
| A1 Holiday Lets Limited | York | 2019 |
| A1 Home Care Ltd | Chelmsford | 2007 |
| A1 Home Invest Ltd | Mansfield | 2020 |
| A1 Homes ( UK ) Limited | London | 2020 |
| A1 Homes Derby Limited | Derby | 2024 |
| A1 Homes Lanarkshire Ltd | Shotts | 2024 |
| A1 Homes Limited | Aberdare | 2017 |
| A1 Hosts Limited | Belfast | 2022 |
| A1 House Properties Ltd | Alderley Edge | 2025 |
| A1 Housing CIC | London | 2018 |
| A1 Housing Services Ltd | London | 2014 |
| A1 Investment Smart Ltd | Greenford | 2024 |
| A1 Investments (London) Limited | Shirley, Solihull | 2023 |
| A1 Investments Ltd | Taunton | 2025 |
| A1 Investors Ltd | Burnham-On-Crouch | 2024 |
| A1 Ipswich Ltd | Borehamwood | 2025 |
| A1 J1 Properties Limited | Banbury | 2023 |
| A1 Kebabish Grill Limited | London | 2005 |
| A1 Kilt Hire Edinburgh Ltd | Blairgowrie | 2017 |
| A1 Kingston Ltd | Borehamwood | 2023 |
| A1 Letting Services Ltd. | Birmingham | 2012 |
| A1 Lettings & Sales Ltd | Maesteg | 2013 |
| A1 Lettings Limited | Maldon | 2009 |
| A1 Lincoln Ltd | Borehamwood | 2024 |
| A1 Living Solutions Ltd | Liverpool | 2025 |
| A1 Maidstone Ltd | Borehamwood | 2026 |
| A1 Maintenance Solutions Ltd | London | 2026 |
| A1 Majestic Park Homes Ltd | Luton | 2025 |
| A1 Management Consulting Limited | London | 2015 |
| A1 MCR Properties Ltd | Manchester | 2024 |
| A1 Pacific Limited | Birkenhead | 1997 |
| A1 Places Ltd | Southampton | 2025 |
| A1 Portfolio Investments Ltd | Bexhill | 2023 |
| A1 Precision Limited | Exeter | 2014 |
| A1 Projects Limited | Chichester | 2003 |
| A1 Properties & Investments Limited | Skelmersdale | 2018 |
| A1 Properties (Hockley Heath) Ltd | Birmingham | 2014 |
| A1 Properties (Kent) Ltd | Broadstairs | 2019 |
| A1 Properties (Scotland) Ltd | Glasgow | 2016 |
| A1 Properties (Sunderland) Ltd | Stockton-On-Tees | 2014 |
| A1 Properties (UK) Limited | Birmingham | 2006 |
| A1 Properties Holding Ltd | Harrow | 2023 |
| A1 Properties Management Limited | Birmingham | 2020 |
| A1 Properties MCR Ltd | Stockport | 2022 |
| A1 Properties North Lincs Ltd | Scunthorpe | 2026 |
| A1 Properties Northwest Limited | Bury | 2014 |
| A1 Properties NW Ltd | Oldham | 2024 |
| A1 Property (Cardiff) Ltd | Cardiff | 2017 |
| A1 Property (London) Ltd | Edgware | 2015 |
| A1 Property and Investments Ltd | Strabane | 2026 |
| A1 Property Consultants Ltd | Newcastle Upon Tyne | 2022 |
| A1 Property Developments Limited | London | 2004 |
| A1 Property Group Ltd | Northampton | 2017 |
| A1 Property Holdings (Scotland) Ltd | Bathgate | 2025 |
| A1 Property Hub Ltd | Sale | 2024 |
| A1 Property Investments (Bham) Ltd | Birmingham | 2020 |
| A1 Property Investments Ltd | Belmont | 2023 |
| A1 Property Investments Manchester Ltd | Manchester | 2015 |
| A1 Property Lets Limited | Crawley | 2025 |
| A1 Property Letting (UK) Limited | Aberystwyth | 2013 |
| A1 Property Maintenance (NW) Ltd | Manchester | 2016 |
| A1 Property Portfolio Ltd | Ossett | 2021 |
| A1 Property Services Group Ltd | Ballyclare | 2024 |
| A1 Property Solutions Ltd | Newcastle Upon Tyne | 2018 |
| A1 Real Estate Manchester Limited | Manchester | 2026 |
| A1 Real Estates Limited | London | 2019 |
| A1 Relocation Experts Ltd | Birmingham | 2024 |
| A1 Rentals and Property Limited | Slough | 2025 |
| A1 Residence Ltd | London | 2023 |
| A1 Residential & Commercial Sales Ltd | Stanford-Le-Hope | 2022 |
| A1 Residentials Ltd | Southsea | 2024 |
| A1 Rose Estate Ltd | Southsea | 2024 |
| A1 Sheikh Investments Ltd | Ilford | 2024 |
| A1 Stone Home Limited | Rochdale | 2024 |
| A1 Storage (2021) Ltd | Middlesbrough | 2021 |
| A1 Storage City Limited | Retford | 2025 |
| A1 TPS Limited | London | 1988 |
| A1 Trading Ltd | Nr. Wolverhampton | 2017 |
| A1 Wasps & Bees Ltd | Essex | 2003 |
| A1 Works Ltd | Chatham | 2023 |
| A1 Yard Rent Ltd | Clacton On Sea | 2018 |
| A1, 89-95 Oldham Street Limited | Manchester | 2021 |
| A10 CBS Ltd | Hertford | 2019 |
| A10 Homes Ltd | Northampton | 2024 |
| A10 Langdon House Management Company Limited | Slough | 2008 |
| A10 Properties Limited | Cleckheaton | 1998 |
| A10 Statics Ltd | Portsmouth | 2025 |
| A10 Ventures Ltd | Oldham | 2026 |
| A103 One Park West Ltd | Altrincham | 2026 |
| A11 Property Investments Ltd | Milton Keynes | 2024 |
| A12 CBS Limited | Hertford | 2022 |
| A12 Giffnock Ltd | Hamilton | 2019 |
| A12 Group Limited | Glasgow | 2023 |
| A12 Properties Limited | Hamilton | 2015 |
| A120 Property Management Limited | Benfleet | 2024 |
| A12JAN Developments Ltd | Hounslow | 2022 |
| A12JAN Ltd | Hounslow | 2025 |
| A13 Ltd | Kington | 2022 |
| A13 Trading Ltd | Horley | 2023 |