| 179 Munster Road Ltd | Construction | 2019 |
| 179 Park Avenue Ltd | Real estate | 2019 |
| 179 Randolph & Co Limited | Households | 2012 |
| 179 Stanstead Road Management Limited | Households | 2019 |
| 179 Sutherland Avenue Limited | Households | 1996 |
| 179 Wardour Street LLP | | 2010 |
| 179-185 Sussex Gardens Limited | Households | 2012 |
| 1791 Ltd | Wholesale & retail | 2022 |
| 1791 Technology Limited | Information & communication | 2024 |
| 1793 Ltd | Professional & scientific | 2024 |
| 1796 Ltd | Information & communication | 2018 |
| 1797 Group Ltd | Professional & scientific | 2025 |
| 17A Ltd | Households | 1994 |
| 17A Sandy Lane Ltd | Real estate | 2023 |
| 17A Stanley Ltd | Real estate | 2019 |
| 17BGSQ (Holdco) Limited | Financial services | 2023 |
| 17BGSQ (MB) Limited | Financial services | 2023 |
| 17BGSQ (Midco 1) Limited | Financial services | 2023 |
| 17BGSQ (Midco 2) Limited | Financial services | 2023 |
| 17BGSQ (Topco) Limited | Financial services | 2023 |
| 17CAPITAL GP Member Limited | Professional & scientific | 2017 |
| 17CAPITAL MIP General Partner LLP | | 2022 |
| 17CAPITAL MIP LP | | 2022 |
| 17CAPITAL Newco Limited | Professional & scientific | 2016 |
| 17COSMETICSTORE Ltd | Wholesale & retail | 2025 |
| 17DC CSP Ltd | Construction | 2025 |
| 17E Management Ltd | Professional & scientific | 2020 |
| 17GCL Limited | Manufacturing | 2024 |
| 17IXOO Providence Ltd | Wholesale & retail | 2025 |
| 17K Ltd | Extraterritorial | 2024 |
| 17NORTHUK Ltd | Professional & scientific | 2022 |
| 17P Limited | Financial services | 2025 |
| 17PICTURES Limited | Information & communication | 2015 |
| 17PT Management Limited | Administrative & support | 2011 |
| 17SIX Ltd | Professional & scientific | 2021 |
| 17SOUTH Ltd | Information & communication | 2025 |
| 17STAYS Ltd | Real estate | 2025 |
| 17TH Chamber Ltd | Other services | 2021 |
| 17TH Stores Ltd | Wholesale & retail | 2025 |
| 17TH Street Properties Limited | Real estate | 2019 |
| 17V28 Ltd | Information & communication | 2024 |
| 18 & 19 Lowndes Square RTM Company Limited | Households | 2010 |
| 18 & 20 Lower Sloane Street Management Limited | Households | 2022 |
| 18 /19 Lowndes Square (Freehold) Limited | Real estate | 2012 |
| 18 Abercorn Place Limited | Administrative & support | 2014 |
| 18 Aberdeen Road Limited | Households | 2007 |
| 18 Acton Lane Management Limited | Households | 2003 |
| 18 Adamson Road Limited | Hospitality | 2016 |
| 18 Addiscombe Court Road Freehold Limited | Households | 2026 |
| 18 Adolphus Road Freehold Limited | Households | 1990 |
| 18 Ainger Road Freehold Limited | Households | 2021 |
| 18 Albert Road Limited | Households | 1998 |
| 18 Alconbury Road Limited | Hospitality | 1998 |
| 18 Aldine Street Limited | Households | 2000 |
| 18 Alexandra Grove Management Company Limited | Households | 2012 |
| 18 Alexandra Road, NW8 Management Company Limited | Households | 2012 |
| 18 Alfred Road Management Company Limited | Households | 2009 |
| 18 Allfarthing Lane Limited | Real estate | 2016 |
| 18 Ambleside Streatham Limited | Households | 2017 |
| 18 and 18A Moring Road Limited | Real estate | 2024 |
| 18 and 20 Lainson Street Management Limited | Households | 2007 |
| 18 and 20 Twickenham Road Freehold Co Limited | Households | 2013 |
| 18 Anson Road Ltd | Real estate | 2025 |
| 18 Arlesford Road Freehold Limited | Real estate | 2012 |
| 18 Arundel Gardens Management Limited | Households | 1987 |
| 18 Ashmere Grove Ltd | Real estate | 2015 |
| 18 Avenue Crescent Residents Association Limited | Households | 1996 |
| 18 Baldry Gardens Limited | Administrative & support | 2016 |
| 18 Barons Court Road Freehold Limited | Households | 2022 |
| 18 Beardell Street (SE19) Limited | Real estate | 2004 |
| 18 Beauchamp Road Company Limited | Extraterritorial | 1989 |
| 18 Bishopsthorpe Road Limited | Households | 2008 |
| 18 Bolton Gardens (Investments) Limited | Real estate | 1998 |
| 18 Bolton Road (Chiswick) Limited | Households | 1997 |
| 18 Brackley Road (Beckenham) Residents Association Limited | Households | 1987 |
| 18 Bramber Properties Limited | Households | 2014 |
| 18 Bramerton Street Freehold Limited | Households | 2026 |
| 18 Bramham Gardens Management Company Limited | Construction | 1994 |
| 18 Bramshill Gardens (Management) Limited | Real estate | 2020 |
| 18 Brecknock Freehold Limited | Households | 2023 |
| 18 Brecknock Road RTM Company Limited | Households | 2022 |
| 18 Brookview Road RTM Company Limited | Households | 2024 |
| 18 Burlington Road Limited | Extraterritorial | 2012 |
| 18 Cadogan Place Limited | Households | 2005 |
| 18 Cambalt Road Management Limited | Households | 2001 |
| 18 Cambridge Road (Freehold) Limited | Professional & scientific | 2013 |
| 18 Camden Crescent (Bath) Limited | Households | 1991 |
| 18 Campden Hill Gardens Freehold Limited | Households | 2019 |
| 18 Capital Ltd | Financial services | 2021 |
| 18 Castlebar Road W5 2DP- RTM Company Ltd | Households | 2025 |
| 18 Cavendish Road Limited | Households | 2022 |
| 18 Cavendish Square Limited | Real estate | 2016 |
| 18 Champion Crescent SE26 Limited | Households | 2023 |
| 18 Charleville Road Limited | Households | 2004 |
| 18 Chesterford Gardens Limited | Households | 2007 |
| 18 Cheverton Road Limited | Households | 2010 |
| 18 Child Street Maintenance Association Limited | Real estate | 1963 |
| 18 Chippendale Street Management Company Limited | Real estate | 2016 |
| 18 Christchurch Hill Management Company Limited | Real estate | 1992 |
| 18 Church Lane Limited | Real estate | 2014 |