| 1ST Avenue Holdings Limited | Sutton Coldfield | 2016 |
| 1ST Avenue Properties Limited | Sutton Coldfield | 2007 |
| 1ST Bar Limited | Paisley | 2019 |
| 1ST Call Commercial Properties Limited | Stonehouse | 2014 |
| 1ST Call Home Buyers Limited | Liverpool | 2021 |
| 1ST Call Properties (Cleethorpes) Limited | Cleethorpes | 2020 |
| 1ST Call Property Rentals Limited | Sheffield | 2018 |
| 1ST Call Recovery (Skipsea ) Limited | Driffield | 2026 |
| 1ST Call Sales & Lettings Limited | Chatham | 2007 |
| 1ST Call Warehousing Limited | Stonehouse | 2016 |
| 1ST Capital Investments Ltd | Sale | 2020 |
| 1ST Capital Management Limited | London | 2018 |
| 1ST Care Properties Ltd | Harrow | 2017 |
| 1ST Central Housing Ltd | Birmingham | 2025 |
| 1ST Central Investments Ltd | Mansfield | 2017 |
| 1ST Central Real Estate Ltd | Chigwell | 2023 |
| 1ST Centre Trading Limited | London | 2023 |
| 1ST Choice Business Enterprise Limited | Birmingham | 2020 |
| 1ST Choice Co-Living Ltd | Poole | 2025 |
| 1ST Choice Developments Ltd | Hereford | 2024 |
| 1ST Choice Estate & Lettings Limited | Burnley | 2007 |
| 1ST Choice Estates Ltd | London | 2004 |
| 1ST Choice for Property U.K. Ltd | Doncaster | 2019 |
| 1ST Choice Homes Ltd | Eastleigh | 2022 |
| 1ST Choice Investments Limited | Leicester | 2019 |
| 1ST Choice Lets Limited | Broxbourne | 2025 |
| 1ST Choice Lettings (Corby) Ltd | Corby | 2019 |
| 1ST Choice Lettings Limited | Neath | 2006 |
| 1ST Choice Park Homes Ltd | Northampton | 2026 |
| 1ST Choice Properties (Milton Keynes) Limited | Milton Keynes | 2014 |
| 1ST Choice Properties 2 Ltd | Salford | 2024 |
| 1ST Choice Properties Ltd | West Wickham | 2019 |
| 1ST Choice Property (Midlands) Ltd | Birmingham | 2019 |
| 1ST Choice Property Investments Ltd. | Billingham | 2005 |
| 1ST Choice Property Management & Acquisitions Limited | Coventry | 2024 |
| 1ST Choice Property Management Ltd | London | 2020 |
| 1ST Choice Property Solutions Limited | Oldham | 2018 |
| 1ST Choice Property Sourcers Ltd | Hull | 2024 |
| 1ST Choice Recycling Properties Ltd | Liverpool | 2020 |
| 1ST Choice Residential Properties Ltd | Wolverhampton | 2022 |
| 1ST Choice Storage Limited | Brentwood | 2010 |
| 1ST City Development Group Limited | Sutton Coldfield | 2019 |
| 1ST City Lettings Limited | Birmingham | 2019 |
| 1ST City Properties Ltd | St Albans | 2019 |
| 1ST Class Housing Ltd | Brierly Hill | 2019 |
| 1ST Class Lettings Limited | Chesham | 2001 |
| 1ST Class Living Ltd | Maidstone | 2025 |
| 1ST Class Property Ltd | Leeds | 2015 |
| 1ST Class Student Homes Ltd | Redditch | 2010 |
| 1ST Class Support & Housing Ltd | Sittingbourne | 2020 |
| 1ST Class U Limited | Bedford | 2014 |
| 1ST Connect Homes Ltd | Edinburgh | 2025 |
| 1ST Construction (UK) Ltd | Enfield | 2001 |
| 1ST Contact Holdings Ltd | Bury St. Edmunds | 2024 |
| 1ST Coverall Properties 2 Limited | Maidstone | 2025 |
| 1ST Coverall Properties Ltd | Ashford | 2021 |
| 1ST Degree Inventory Limited | Stockton-On-Tees | 2020 |
| 1ST Degree Lease Company Limited | Stockton-On-Tees | 2024 |
| 1ST Design Developments Limited | Deal | 2025 |
| 1ST Developments London Limited | London | 2019 |
| 1ST Developments UK Ltd | Rochdale | 2008 |
| 1ST Estate Service Ltd | Gloucester | 2020 |
| 1ST Family Homes Ltd | Aldershot | 2022 |
| 1ST Field Properties and Management Limited | Sheffield | 2003 |
| 1ST Focus Letting Limited | Edinburgh | 2020 |
| 1ST for Buy to LET Homes Ltd | Hyde | 2017 |
| 1ST for Properties Ltd | Lisburn | 2023 |
| 1ST for Rental Homes Ltd | Hyde | 2016 |
| 1ST Group Investment Ltd | Hayes | 2020 |
| 1ST Group Property Ltd | Chepstow | 2023 |
| 1ST Invest Property Ltd | Southend 0N-Sea | 2026 |
| 1ST Key Ltd | Birmingham | 2025 |
| 1ST Lane Property Limited | Norwich | 2025 |
| 1ST Let's Lettings Glasgow Ltd | Glasgow | 2024 |
| 1ST Lets (Glasgow) Ltd | Glasgow | 2016 |
| 1ST Lets (Scotland) Ltd | Glasgow | 2014 |
| 1ST Lets (South) Ltd | Glasgow | 2017 |
| 1ST Lettings Ltd | London | 2003 |
| 1ST Lettings Property Services Limited | Coventry | 2005 |
| 1ST Line Properties Ltd | London | 2026 |
| 1ST LL Projects Ltd | Portsmouth | 2025 |
| 1ST London Property Limited | Harlow | 2020 |
| 1ST Management Consultancy Limited | Watford | 1996 |
| 1ST Move Services Limited | London | 2022 |
| 1ST National Developments Limited | Bracknell | 2001 |
| 1ST Nature Limited | London | 2022 |
| 1ST Pent Property Ltd | Swindon | 2022 |
| 1ST Place Properties Ltd | Leeds | 2021 |
| 1ST Place Property Management Ltd | Sale | 2022 |
| 1ST Placed Properties Ltd | Surbiton | 2025 |
| 1ST Premier Properties Ltd | Thornton Heath | 2020 |
| 1ST Professional Rentals Ltd | Sheffield | 2026 |
| 1ST Property Development Limited | Liverpool | 2019 |
| 1ST Property Group Ltd | Cambridge | 2025 |
| 1ST Property Investments (Scotland) Limited | Glasgow | 2007 |
| 1ST Property Management and Services Ltd | Middlesex | 2014 |
| 1ST Property Solutions Limited | London | 2018 |
| 1ST Quality Group Limited | Chingford | 2017 |
| 1ST Quality Investments Limited | Chingford | 2017 |
| 1ST Quality Residential Investments Ltd | Chingford | 2021 |