| Acorn Drive Management Ltd | Dereham | 2021 |
| Acorn Estates (Giltbrook) Management Company Limited | Nottingham | 2019 |
| Acorn Gardens Ltd | Ruislip | 2022 |
| Acorn Grove (Fishbourne) Management Company Limited | Salisbury | 2016 |
| Acorn Homes (Woodlands) Village Management Company Limited | Bourne End | 2006 |
| Acorn House (M.C.) Limited | Upham | 2020 |
| Acorn House (Ryde) Limited | Cowes | 2006 |
| Acorn Management Co (NI) Limited | Carrickfergus | 2006 |
| Acorn Meadows (Brailsford) Management Company Limited | Burntwood | 2019 |
| Acorn Mews (Denmead) Management Limited | Bognor Regis | 2009 |
| Acorn Mews Management Company Limited | Bedford | 1987 |
| Acorn Mill Management Company Limited | Rainhill | 2003 |
| Acorn Place Management Limited | Cardiff | 2013 |
| Acorn Property Management (Sussex) Ltd | Bournemouth | 2016 |
| Acorn Property Rentals UK Ltd | Cardiff | 2022 |
| Acorn Street (Hunsdon) Management Company Limited | Croydon | 2012 |
| Acorn View (Hyndburn) Management Company Limited | Salisbury | 2021 |
| Acorn Yard (Surrey Docks) Management Company Limited | London | 1983 |
| Acornclose Limited | Woking | 2004 |
| Acornfern Property Management Company Limited | Purley | 1991 |
| Acornhill Management Company Limited | Belfast | 2002 |
| Acorns Court Management Company Limited | Sandwich | 2022 |
| Acorns Flat Management Company Limited | | 1985 |
| Acorns Management (Bournemouth) Limited | Bournemouth | 2002 |
| ACP Estate Management Limited | Amersham | 2018 |
| ACP Properpties London Limited | Middleton | 2026 |
| Acpd Ltd | Stafford | 2023 |
| Acquest Property Management Ltd | Lincoln | 2004 |
| Acquired Management Ltd | Liverpool | 2026 |
| Acquisto Live & LET Ltd | London | 2025 |
| ACR (2020) Ltd | Leeds | 2021 |
| Acre 1155 Limited | London | 2013 |
| Acre 168 Limited | London | 1997 |
| Acre Court Management Company (Wibsey) Limited | Bourne End | 2009 |
| Acre Court Management Limited | Northampton | 1992 |
| Acre END Close Management Ltd | Witney | 2022 |
| Acre House Management Limited | Uxbridge | 1986 |
| Acre Lane (Brixton) Management Co. Limited | Croydon | 1999 |
| Acre Lane Management Limited | Keighley | 2016 |
| Acre Mead Flats Management Company Limited | Birdcage Lane | 1989 |
| Acre Mews Long Hanborough Limited | Witney | 2020 |
| Acre Moss & White Moss Court Management Company Limited | Windermere | 2022 |
| Acre Park Management Ltd | Croydon | 2006 |
| Acre Passage Management Company Limited | Windsor | 2013 |
| Acre Road (Kingston) Management Limited | Kingston Upon Thames | 1996 |
| Acre-Tri RTM Company Limited | Croydon | 2022 |
| Acreline Properties Ltd | Nottingham | 2025 |
| Acrepearl Limited | Redcar | 1984 |
| Acres Residential Lettings Limited | Sutton Coldfield | 2024 |
| Acresfield Management Company Ltd | Lancaster | 2024 |
| Acresgate Court Management Company Ltd | Shrewsbury | 2022 |
| Acrestones Property Management Ltd | Ilford | 1996 |
| Acris Court Management Company Limited | Harlow | 2007 |
| ACS (Hull) Ltd | Hull | 2009 |
| ACS Trading Ltd | Kettering | 2025 |
| Actframe Limited | London | 2009 |
| Actguar Limited | London | 1986 |
| Actiholdings Limited | Poole | 2015 |
| Acting for Business Limited | Sutton | 2021 |
| Action Scheme Limited | | 1983 |
| Actionpart Flat Management Limited | | 1986 |
| Actionsafe Limited | London | 1990 |
| Active House (Newhaven) Ltd | Croydon | 2024 |
| Activecube Limited | London | 2026 |
| Activevision Property and Development Ltd | London | 2026 |
| Activo Services Ltd | Birmingham | 2022 |
| Acto Investments Limited | Market Drayton | 2026 |
| Acton Beta Limited | Kidderminster | 1991 |
| Acton Burnell (Bournemouth) Limited | Bourne End | 1959 |
| Acton Court (Whitehaven) Limited | Whitehaven | 2005 |
| Acton Garden Estates Limited | London | 2017 |
| Acton Green Barns Management Company Limited | Warrington | 2025 |
| Acton House (Cheltenham) Management Company Limited | Cheltenham | 1998 |
| Acton House RTM Company Limited | Salisbury | 2010 |
| Acton Town Residents Association Limited | London | 1984 |
| Actsouth Property Management Limited | Guildford | 1984 |
| Acuit Investments Ltd | Maidstone | 2020 |
| Acurent Ltd | Leicester | 2022 |
| Acventure (Bowen House) Limited | New Romney | 2023 |
| ACW Property Management Company Limited | North Shields | 2017 |
| ACW Residential Ltd | Kidderminster | 2025 |
| AD Valorem Property Ltd | Edinburgh | 2022 |
| ADA Gardens Residents Management Company Ltd | Fleet | 2023 |
| Adade Group Ltd | Thornton Heath | 2025 |
| Adaern Close Limited | Houghton Regis | 2001 |
| Adagio Management Company Limited | Fleet | 2004 |
| Adakz Properties Limited | London | 2024 |
| Adam & EVE (Judd Street) Limited | Colindale | 2000 |
| Adam Brothers Property Limited | Rochdale | 2025 |
| Adam Close RTM Company Limited | Marlow | 2014 |
| Adam Court Limited | Henley-On-Thames | 1982 |
| Adam Court Residents Association Limited | Sutton | 1986 |
| Adam David Butler Limited | Braunton | 2025 |
| Adam Geoffrey Limited | Manchester | 2025 |
| Adam House Properties Limited | Notts | 1986 |
| Adam James Securities Limited | Ramsgate | 1991 |
| Adam JD Property Ltd | Whitehaven | 2025 |
| Adam Kennedy Dog Training Ltd | Kingston Upon Thames | 2024 |
| Adam Meere House RTM Company Limited | Harlow | 2025 |
| Adam Parker Property Ltd | Darlington | 2015 |