| 76CLIENTS Ltd | Professional & scientific | 2022 |
| 76HQ Ltd | Extraterritorial | 2026 |
| 76SJH LLP | | 2025 |
| 77 - 109 Onslow Square RTM Company Limited | Households | 2011 |
| 77 Arne House Ltd | Real estate | 2023 |
| 77 Bastwick Street Limited | Real estate | 2026 |
| 77 Bathurst Gardens (Freehold) Limited | Hospitality | 2014 |
| 77 Blackheath Road Limited | Real estate | 2018 |
| 77 Brondesbury Road Limited | Real estate | 2004 |
| 77 Burrows Road Freehold Limited | Real estate | 2023 |
| 77 Chesterton Road Ltd | Real estate | 2022 |
| 77 Cobourg Road Ltd | Real estate | 2024 |
| 77 Commerce Ltd | Professional & scientific | 2014 |
| 77 Compayne Gardens Ltd | Other services | 2003 |
| 77 Construction UK Ltd | Construction | 2025 |
| 77 Dorothy Road Ltd | Real estate | 2024 |
| 77 Dukes Avenue (Management) Limited | Households | 2007 |
| 77 Eaton Square Ltd | Households | 2013 |
| 77 Endlesham Road Management Company Limited | Households | 2013 |
| 77 Felix Road Limited | Households | 2024 |
| 77 Florence Road Management Ltd | Real estate | 2012 |
| 77 Foods UK Ltd | Manufacturing | 2022 |
| 77 Frithville Gardens Limited | Other services | 2014 |
| 77 Gauden Road Limited | Extraterritorial | 2010 |
| 77 Goldhurst Terrace Management Company Limited | Households | 2011 |
| 77 Grafton Road Limited | Real estate | 2002 |
| 77 Grosvenor Park Ltd | Real estate | 2014 |
| 77 Hamilton Terrace Limited | Households | 2015 |
| 77 Haverstock Hill Limited | Real estate | 2021 |
| 77 Herne Hill Management Company Ltd | Other services | 2014 |
| 77 Hervey Road Management Limited | Households | 2017 |
| 77 Hopton Road Management Company Ltd | Households | 2015 |
| 77 Hubert Grove Management Company Limited | Extraterritorial | 2008 |
| 77 Jerningham Road Residents Company Limited | Households | 2007 |
| 77 Jewellers Ltd | Wholesale & retail | 2023 |
| 77 Laitwood Road Limited | Real estate | 1999 |
| 77 Lavender Hill Freehold Limited | Real estate | 2022 |
| 77 Leadenhall Street Tenant Limited | Real estate | 2018 |
| 77 Leander Road Property Management Co Ltd | Real estate | 2013 |
| 77 Legacy Limited | Construction | 2022 |
| 77 LHS Limited | Real estate | 2021 |
| 77 Lofting Road Limited | Households | 2023 |
| 77 Management Limited | Arts & recreation | 2009 |
| 77 Marylands Road Limited | Households | 2023 |
| 77 Mayfair Limited | Real estate | 2016 |
| 77 Minet Avenue Limited | Administrative & support | 2014 |
| 77 Parchmore MGT Limited | Real estate | 2021 |
| 77 Parliament Hill Residents Company Ltd | Households | 2022 |
| 77 Portobello Road Limited | Construction | 2019 |
| 77 Property Investments Ltd | Real estate | 2023 |
| 77 Queens Crescent RTM Company Limited | Households | 2011 |
| 77 Randolph Avenue Limited | Households | 1984 |
| 77 Redcliffe Gardens Limited | Households | 2000 |
| 77 Reporton Road Limited | Extraterritorial | 2012 |
| 77 RPM Print UK Limited | Manufacturing | 2021 |
| 77 Seventy Seven Ltd | Information & communication | 2025 |
| 77 Shaftesbury Limited | Real estate | 2017 |
| 77 Shooters Hill Road Limited | Real estate | 2011 |
| 77 ST Antonys Road Limited | Households | 2019 |
| 77 ST Marys Road, Hastings RTM Company Limited | Real estate | 2022 |
| 77 ST. Aubyns Limited | Real estate | 2001 |
| 77 ST. Georges Drive Management Company Limited | Households | 2006 |
| 77 Staar PVT Ltd | Wholesale & retail | 2022 |
| 77 Streatham Hill Limited | Extraterritorial | 2016 |
| 77 Sutherland Avenue Residents Company Limited | Households | 1983 |
| 77 T Limited | Administrative & support | 2021 |
| 77 Walm Lane Limited | Real estate | 1995 |
| 77 Walton Street Ltd | Real estate | 2025 |
| 77 Whittington Road (Freehold) Limited | Real estate | 2007 |
| 77, 77A, 79 Blackheath Road Ltd | Households | 2022 |
| 77, Westgate Bay Avenue Ltd | Households | 2010 |
| 77-79 Lyall Mews West Limited | Households | 2001 |
| 77-81 Harcourt Terrace Freehold Limited | Households | 1997 |
| 77-81 the CUT LLP | | 2010 |
| 77-82 Bridle Close Freehold Limited | Households | 2020 |
| 77/79 Aylmer Road Freeholders Limited | Households | 2023 |
| 770 Crown Trading Limited | Wholesale & retail | 2022 |
| 770 Holdings Limited | Other services | 2024 |
| 770 Judaica and Gift Trading Limited | Wholesale & retail | 2024 |
| 773 Ltd | Hospitality | 2025 |
| 773ONLINE Ltd | Hospitality | 2026 |
| 775 DV (UK) Holding Ltd | Financial services | 2021 |
| 776BC UK Ltd | Wholesale & retail | 2023 |
| 777 Asset Management Ltd | Administrative & support | 2020 |
| 777 Botanicals & Cosmetics Limited | Manufacturing | 2025 |
| 777 Capital Ltd | Financial services | 2026 |
| 777 Commerce Limited | Wholesale & retail | 2023 |
| 777 Home Security Ltd | Administrative & support | 2024 |
| 777 International Ltd | Wholesale & retail | 2024 |
| 777 Lounge Ltd | Hospitality | 2024 |
| 777 Motors Ltd | Wholesale & retail | 2026 |
| 777 Plumbing Limited | Construction | 2011 |
| 777 Racing Ltd | Arts & recreation | 2018 |
| 777 Retail Limited | Wholesale & retail | 2022 |
| 777 Shop Ltd | Wholesale & retail | 2010 |
| 777 Smiles Group Ltd | Health & social care | 2024 |
| 777 Training Limited | Education | 2025 |
| 777-MMK Ltd | Wholesale & retail | 2017 |
| 7770014 Canada Inc Limited | Administrative & support | 2012 |
| 777CONSULTING Ltd | Administrative & support | 2024 |