| A.Store Limited | Warrington | 2000 |
| A.T Mount Properties Limited | Wembley | 2021 |
| A.T Property Investments (Burton) Ltd | Burton On Trent | 2022 |
| A.T Renovations Ltd | Leeds | 2025 |
| A.T. Consultancy Ltd | Whitstable | 2005 |
| A.T. Deca Ltd | Banbridge | 2000 |
| A.T. Festival Foods Holdings Limited | London | 2013 |
| A.T. Helm Ltd | Bolton | 2010 |
| A.T.A Housing Ltd | Solihull | 2025 |
| A.T.Bent(Properties)Limited | Beccles | 1960 |
| A.T.C Estates Limited | Lymington | 2014 |
| A.T.C. Manufacturing Limited | Barnsley | 1921 |
| A.T.E. Property Developments Limited | Colchester | 2020 |
| A.T.J.D.M Ltd | Littleborough | 2025 |
| A.T.N.A Investments Ltd | Watford | 2023 |
| A.T.O.M. Property Limited | Ascot | 2012 |
| A.T.S. Properties Limited | Tyne & Wear | 1998 |
| A.T.S. Residential Limited | Tyne & Wear | 1998 |
| A.Taylor & Son(Leeds),Limited | Leeds | 1935 |
| A.V. (Uckfield) Limited | Brighton | 1956 |
| A.V. Barwick Limited | Brighton | 1965 |
| A.V. Dawson Holdings Limited | Middlesbrough | 1998 |
| A.V. Hurst & Sons (Fobbing) Limited | Essex | 1975 |
| A.V. Ridout (Highcliffe) Limited | Bournemouth | 1978 |
| A.V.B. (Hillhead) Limited | Surrey | 1974 |
| A.V.Hessel Limited | Tring | 1959 |
| A.V.S Property Development Limited | Bristol | 2022 |
| A.W Properties SW Ltd | Bristol | 2024 |
| A.W. and S.A. Wright Limited | Billinge | 1986 |
| A.W. BAG Manufacturers Limited | Manchester | 2014 |
| A.W. Bailey Developments Limited | Derbyshire | 1999 |
| A.W. Champion Properties Limited | New Malden | 2003 |
| A.W. Curtis and Sons Limited | Lincoln | 1930 |
| A.W. Developments (Liverpool) Limited | Preston | 1988 |
| A.W. Hainsworth Property Limited | Pudsey | 2008 |
| A.W. House Property Investments Limited | Luton | 2025 |
| A.W. Lithgow Properties Limited | | 1987 |
| A.W. Lymn Properties Limited | Nottingham | 2012 |
| A.W. Marriott Limited | Herefordshire | 1934 |
| A.W. Moffitt & Company Limited | Yarm | 1999 |
| A.W. Properties RTM Company Limited | Sidcup | 2008 |
| A.W. Securities Limited | Luton | 1972 |
| A.W.Arnold & Sons (Nazeing and Enfield) Limited | Nazeing | 1953 |
| A.W.Bland & Sons,Limited | Abergavenny | 1910 |
| A.W.J. Holdings Limited | Fordingbridge | 2018 |
| A.W.Properties Limited | Rickmansworth | 1959 |
| A.W.Property Services Northwest Ltd | Liverpool | 2025 |
| A.W.Ramsey(Coachworks)Limited | Norwich | 1965 |
| A.W.T. Holdings (NE) Limited | Blaydon-On-Tyne | 2026 |
| A.W.U.L Lettings Ltd | Sheffield | 2025 |
| A.Webber & Son,Limited | Leeds | 1937 |
| A.Whitehead Properties Ltd | Lochgelly | 2023 |
| A.Whitfield Holdings Ltd | Cramlington | 2024 |
| A.Wilkins and Sons Limited | Guildford | 1940 |
| A.Wise Chemists Limited | Surrey | 1972 |
| A.X.E.S Management Limited | Rochdale | 2025 |
| A.X.E.S Properties Limited | Rochdale | 2026 |
| A.Y.A Properties Limited | Accrington | 2016 |
| A.Y.C. Housing Ltd. | Aberdeen | 2015 |
| A.Y.Z.I. Estates Limited | Dewsbury | 2014 |
| A.Z.A Property Investments Ltd | Birmingham | 2025 |
| A.Z.A.R Limited | London | 2013 |
| A/K Davies Properties Limited | Leyland | 2025 |
| A01 Properties Ltd | Bradford | 2025 |
| A01 Ventures Limited | London | 2024 |
| A0203 Capella Limited | London | 2023 |
| A04 Ltd | London | 2025 |
| A1 (COV) Limited | Coventry | 2006 |
| A1 A1 Ltd | Gravesend | 2013 |
| A1 Accommodation Limited | Telford | 2023 |
| A1 Assets and Investments Ltd | Birmingham | 2024 |
| A1 Assets Glasgow Limited | Glasgow | 2022 |
| A1 Assets Ltd | Southall | 2025 |
| A1 Bicester Property Management Limited | Bicester | 2025 |
| A1 Birks Ltd | Belmont | 2023 |
| A1 Build for YOU Ltd | London | 2021 |
| A1 BUK Ltd | Derby | 2025 |
| A1 Businesses Ltd | York | 2018 |
| A1 Capital Estates Ltd | Slough | 2026 |
| A1 Capital Homes Ltd | Hemel Hempstead | 2023 |
| A1 Capital Lettings Limited | London | 2016 |
| A1 Capital Properties Ltd | Leeds | 2026 |
| A1 Chiro Holdings Ltd | Glasgow | 2021 |
| A1 Choice Property Limited | Basildon | 2018 |
| A1 City Lettings Ltd | Airdrie | 2023 |
| A1 City Properties Ltd | Glasgow | 2017 |
| A1 Corporate Services Limited | Virginia Water | 2017 |
| A1 Crescent Property Ltd | Manchester | 2021 |
| A1 Dairies Limited | London | 2011 |
| A1 Direct Homes Ltd | Luton | 2024 |
| A1 Elite Properties Ltd | West Bromwich | 2024 |
| A1 Estate Services Ltd | London | 2024 |
| A1 Estates Ltd | Grantham | 2023 |
| A1 Estates Private Ltd | London | 2011 |
| A1 Euro Limited | Hertfordshire | 1999 |
| A1 Forward Property Limited | Eastleigh | 2020 |
| A1 GBD Ltd | Broadwas | 2026 |
| A1 Group Holdings Ltd | Newport | 2020 |
| A1 Guildford Ltd | Borehamwood | 2025 |
| A1 Hallmark Invests Limited | Birmingham | 2018 |