| Applegarth Manor (Oulton) Management Company Limited | Hemel Hempstead | 2015 |
| Applegarth Vale (Grayshott) Management Company Limited | Bourne End | 2018 |
| Applegate (Sittingbourne) Management Company Limited | Hoddesdon | 2022 |
| Applegate Court Management Company Limited | Ashford | 2015 |
| Applegate Park Open Space Management Company Limited | Tiverton | 2021 |
| Applehayes Management Company Limited | Sidmouth | 1979 |
| Applemart Limited | | 1981 |
| Applemead Residents Management Company Limited | Budleigh Salterton | 2020 |
| Applesham Limited | Croydon | 1988 |
| Applethwaite Country House Limited | Northampton | 2003 |
| Applethwaite Hall Management Company Limited | Windermere | 2017 |
| Appleton Downs Management Company Limited | Hemel Hempstead | 2010 |
| Appleton Gate Management Company Limited | Cambridge | 2007 |
| Appleton Lodge Management Limited | Newry | 2012 |
| Appleton Meadows Management Company Ltd | Ballyclare | 2022 |
| Appleton Mews Management Limited | Altrincham | 1988 |
| Appleton Property Holdings Ltd | Hemel Hempstead | 2022 |
| Appleton Village Management Company Ltd | Manchester | 2016 |
| Appletree Court Duffield RTM Company Ltd | Leicester | 2024 |
| Appletree Court GM Limited | Garforth | 2020 |
| Appletree Court Management Limited | Hoddesdon | 1989 |
| Appletree Court RTM Company Limited | Whitley Bay | 2009 |
| Appletree Farm Management Limited | Weston-Super-Mare | 2006 |
| Appletree Grove (Chinnor) Management Company Limited | Salisbury | 2025 |
| Appletree Lane (Marston Montgomery) Management Company Limited | Swadlincote | 2020 |
| Appletree Management Company Limited | Coulsdon | 1987 |
| Appletrees (Angmering) Estate Limited | Littlehampton | 1974 |
| Appletrees Freehold Company Limited | Sevenoaks | 2010 |
| Appletrees Management Limited | Stevenage | 1979 |
| Applewood (Mirfield) Estate Management Company Limited | Derby | 2023 |
| Applewood Court Residents (Swindon) Limited | Swindon | 1982 |
| Applewood Harwell Limited | Harlow | 2020 |
| Applewood Management Company Limited | Crowthorne | 2017 |
| Appley Management Limited | East Cowes | 2008 |
| Appleyard (Harpenden) Management Company Limited | Dunstable | 2019 |
| Appleyard (Rothley) Limited | Leicester | 2019 |
| Appleyard Management Co Limited - the | Armagh | 2004 |
| Appleyard Quarter Management Company Limited | London | 2019 |
| Apply Property Ltd | Belper | 2025 |
| Applycertain Property Management Limited | Bourne End | 1994 |
| Applyclear Property Management Limited | Sharnbrook | 1995 |
| Applygain Property Management Limited | Gloucestershire | 1994 |
| Applygood Property Management Limited | London | 1996 |
| Applyground Property Management Limited | London | 1996 |
| Applymove Property Management Limited | Southsea | 1994 |
| Applypeace Limited | Shirehampton | 1995 |
| Applyready Property Management Limited | London | 1998 |
| Applyshare Property Management Limited | Hove | 1994 |
| Approach 2000 Management Company Limited | Bourne End | 2000 |
| Approach Management Limited | Potters Bar | 2010 |
| APR Property Counsultants Ltd | Leighton Buzzard | 2022 |
| APRES360 Limited | Newquay | 2026 |
| April Close Management Limited | High Wycombe | 1981 |
| April Close Residents Limited | Surrey | 1992 |
| April Court (Bournemouth) Freehold Limited | Bournemouth | 2000 |
| April Developments Limited | Ilford | 2023 |
| April Gardens Limited | Chichester | 2004 |
| April Place Residents Association Limited | Bexhill-On-Sea | 2005 |
| April's View Management Ltd | Ilkley | 2023 |
| Aprilclean Limited | Hexham | 2015 |
| Aprima Ltd. | Lewes | 2008 |
| APS Building Management Limited | London | 2025 |
| APS Holdings (UK Investments) Limited | Lincoln | 2019 |
| Apse Heath Methodist Church Hall Residents Management Company Limited | Sandown | 2018 |
| Apsham Grange (Topsham) Management Company Limited | Salisbury | 2021 |
| Apsley (Hemel Hempstead) Management Company Limited | Hoddesdon | 2002 |
| Apsley Court (Crowthorne) Management Company Limited | Cambridge | 2005 |
| Apsley Court (Oxford) Freehold Limited | Kidlington | 2010 |
| Apsley Court (Oxford) Management Company Limited | Kidlington | 1987 |
| Apsley Court Freeholders Company (Sussex) Limited | Tunbridge Wells | 1978 |
| Apsley Court Residents Association Limited | Norwich | 1977 |
| Apsley Court RTM Company Limited | Bournemouth | 2023 |
| Apsley Grange Residents' Company Limited | Bourne End | 1995 |
| Apsley House (Dursley) Property Management Ltd | Dursley | 2015 |
| Apsley House Residents Management Limited | London | 1975 |
| Apsley Lodge Management Limited | Pinner | 2007 |
| Apsley Mills (Blocks a B and D) Flat Management Company Limited | Hemel Hempstead | 2001 |
| Apsley Mills (Blocks E F and G) Flat Management Company Limited | Hemel Hempstead | 2001 |
| Apsley Quay Management Company Limited | Hemel Hempstead | 2019 |
| Apsley Residence Management Limited | Leicester | 2026 |
| Apsley Terrace Management Limited | Ilfracombe | 2002 |
| Aptb Properties Limited | London | 2025 |
| Aptly Managed Ltd | Croydon | 2021 |
| Apton Court (Management) Company Limited | Ware | 1971 |
| Apton Road Management Limited | London | 2014 |
| Apway Limited | London | 2006 |
| Apyb Limited | London | 2021 |
| AQH Micklegate (Acres Hill) Management Company Limited | Sheffield | 2008 |
| Aqsi Limited | King'S Lynn | 2025 |
| Aqua (Fenny Stratford) Management Company Limited | Salisbury | 2008 |
| Aqua (Poole) RTM Company Limited | Poole | 2026 |
| Aqua House (Hayes) RTM Company Limited | Hayes | 2025 |
| Aqua Logic Products Ltd | Thornton-Cleveleys | 2024 |
| Aqua Realty Ltd | Ballynahinch | 2019 |
| Aqua Residents Limited | Hemel Hempstead | 2016 |
| Aqua Vista (Freehold) Limited | Rottingdean | 2023 |
| Aqua Vista BOW Residents Management Company Limited | London | 2010 |
| Aqua-Blue Limited | Eastleigh | 1975 |
| Aquacraft Plumbing Ltd | Stevenage | 2026 |
| Aquacross Limited | Plymouth | 1997 |