| 1066 Developments Ltd. | Construction | 2016 |
| 1066 GAS Ltd | Construction | 2021 |
| 1066 Heights Limited | Construction | 2014 |
| 1066 Homes General Builders Limited | Construction | 2009 |
| 1066 Trimmings Limited | Wholesale & retail | 2015 |
| 13 Landmark Property Development Ltd | Real estate | 2020 |
| 18 Park Road (Freehold) Limited | Real estate | 2015 |
| 184 to 188 Hughenden Road RTM Company Ltd | Real estate | 2006 |
| 19 BTR Limited | Construction | 2018 |
| 19 BTR Operations Limited | Real estate | 2025 |
| 197 London Road Limited | Extraterritorial | 2005 |
| 1ST Class Windows Systems Holdings Limited | Construction | 2019 |
| 26 Cheniston Gardens Limited | Households | 2004 |
| 28 Windmill Road Management Limited | Households | 1992 |
| 30 Arlington Road (Eastbourne) Management Limited | Households | 2014 |
| 35 Degrees South Ltd | Real estate | 2018 |
| 37 Eversfield Place Management Ltd | Extraterritorial | 2016 |
| 37 West Hill Road Limited | Extraterritorial | 1998 |
| 4GEN Futures Ltd | Financial services | 2026 |
| 5 Laton Road (Hastings) Limited | Households | 2015 |
| 54-60 Gordon Road Freehold Limited | Households | 2015 |
| 7 Park Road Bexhill Limited | Hospitality | 2004 |
| 74 Middle Street Ltd | Hospitality | 2018 |
| A J Little Properties Ltd | Real estate | 2024 |
| A&A North South Limited | Real estate | 2018 |
| A1 Portfolio Investments Ltd | Real estate | 2023 |
| Aaiisen Associates Limited | Real estate | 2023 |
| Abac Consulting Limited | Professional & scientific | 2005 |
| Abac Property Limited | Real estate | 2017 |
| Abac Property Management LLP | | 2023 |
| Abac Real Estate Ltd | Real estate | 2025 |
| Abbcat Ltd | Real estate | 2025 |
| Abbeydale 2024 Limited | Real estate | 2024 |
| Abergeldie (Bexhill) Limited | Households | 2005 |
| Absolutely Awesome Group Ltd | Information & communication | 2018 |
| ACA Formations 02 LLP | | 2024 |
| ACA Formations 3 LLP | | 2024 |
| Acuity Corporate Advisory LLP | | 2023 |
| Acuity Professional Accounting Limited | Professional & scientific | 2023 |
| Acuity Professional Advisers Ltd | Financial services | 2003 |
| Acuity Professional Business Performance Coaching Limited | Administrative & support | 2015 |
| Acuity Professional Foundation | Education | 2017 |
| Acuity Professional Group Limited | Professional & scientific | 2007 |
| Acuity Professional Law LLP | | 2012 |
| Acuity Professional Legacy Ltd | Professional & scientific | 2008 |
| Acuity Professional Nominees Ltd | Financial services | 2015 |
| Acuity Professional Partnership LLP | | 2007 |
| Acuity Professional Retirement Benefit Solutions Ltd | Administrative & support | 2018 |
| Acuity Professional Services Limited | Professional & scientific | 2013 |
| Adlib Entertainment Ltd | Information & communication | 2016 |
| Aerial Swift Limited | Real estate | 2006 |
| AFH Communications Limited | Professional & scientific | 2012 |
| AG Ramsgate Ltd | Construction | 2023 |
| Agapanthus Housing Limited | Hospitality | 2017 |
| Ahmed & Sons Investments Ltd | Real estate | 2025 |
| Aida Estates LLP | | 2020 |
| AJH Financial Associates Limited | Financial services | 2019 |
| AJJ HB Limited | Professional & scientific | 2023 |
| AL Merchandise Ltd | Wholesale & retail | 2023 |
| Alan DEE Ltd | Real estate | 2015 |
| Aldridge Consultants Limited | Administrative & support | 2018 |
| Alentejo Guest House Ltd | Hospitality | 2020 |
| Alexander Jefferies Partnership LLP | | 2023 |
| Alexandra Dunhill Limited | Health & social care | 2018 |
| Almax Group Residential LLP | | 2016 |
| Alphabet Management Limited | Real estate | 2000 |
| Alphabet Property Management Services Limited | Real estate | 2003 |
| Alston House Limited | Hospitality | 2014 |
| AM Training Limited | Information & communication | 1996 |
| Amarelle Estates Ltd | Real estate | 2018 |
| Amersham Land Investments LLP | | 2023 |
| Amersham Land Limited | Extraterritorial | 2023 |
| AMG (Broomgrove) Ltd | Construction | 2024 |
| AMG Archery Ltd | Construction | 2024 |
| AMG Rentals Limited | Real estate | 2025 |
| Amisol UK Limited | Real estate | 2004 |
| Analytical I Ltd | Professional & scientific | 2014 |
| Andrade Medical Ltd | Health & social care | 2018 |
| Andrade Ventures LLP | | 2019 |
| Angela Webb Property Management LLP | | 2021 |
| Aniva (UK) Limited | Information & communication | 2012 |
| Apcp Formations 7 LLP | | 2023 |
| Apeiron Formations Ltd | Real estate | 2025 |
| APJ Investment Property Ltd | Real estate | 2017 |
| APJ Property Investment LLP | | 2016 |
| Apollonia Ventures LLP | | 2019 |
| Apothecary Developments Ltd | Construction | 2020 |
| Appledore New Ventures LLP | | 2024 |
| Archway Ocean UK Limited | Extraterritorial | 1981 |
| Argent Communications & Leisure Limited | Information & communication | 2005 |
| Arkstone Investment Limited | Real estate | 2021 |
| Arkstone Property Group Limited | Real estate | 2026 |
| Arkstone Property Management LLP | | 2021 |
| Arlow Stone Limited | Real estate | 2025 |
| Art of Stephen Ltd | Information & communication | 2021 |
| Asaj Property Management LLP | | 2021 |
| Ashdown HR Consulting Limited | Professional & scientific | 2011 |
| Ashdown Risk Partners Ltd | Financial services | 2024 |
| Atanni Enterprises Ltd | Real estate | 2018 |
| Attrell Group Limited | Financial services | 2026 |