| 66 Miles Limited | Professional & scientific | 2024 |
| 66 Music Limited | Administrative & support | 2021 |
| 66 Nightingale Road Management Limited | Households | 2020 |
| 66 North UK Limited | Wholesale & retail | 2019 |
| 66 Oakfield Road Limited | Real estate | 1999 |
| 66 Ormiston Grove Limited | Extraterritorial | 2007 |
| 66 PAH Employment LLP | | 2024 |
| 66 Peckham Hill Street Management Company Limited | Households | 2022 |
| 66 Pont Street Limited | Households | 2000 |
| 66 Primrose Gardens Management Limited | Households | 1990 |
| 66 Professional Services Ltd | Professional & scientific | 2002 |
| 66 Queens Gardens RTM Company Limited | Real estate | 2014 |
| 66 Reasons Limited | Professional & scientific | 2020 |
| 66 Regents Park Road Limited | Extraterritorial | 2014 |
| 66 Reighton RD Ltd | Households | 2019 |
| 66 Rokesly Avenue Limited Liability Partnership | | 2011 |
| 66 Ross Street Ltd | Administrative & support | 2024 |
| 66 Salford Road Freehold Limited | Households | 2017 |
| 66 Saltram Crescent Freehold Limited | Households | 2024 |
| 66 Salusbury Road Freehold Limited | Households | 2013 |
| 66 Savernake Road Management Company Limited | Real estate | 1990 |
| 66 Sheephouse Invest Ltd | Real estate | 2025 |
| 66 Silver Crescent Limited | Households | 2003 |
| 66 Sotheby Road, London N5 Limited | Other services | 1993 |
| 66 Southwell Road Management Limited | Real estate | 2011 |
| 66 Southwood Lane Freehold Limited | Households | 1994 |
| 66 Sutherland Avenue Limited | Households | 1994 |
| 66 Sutherland Square Limited | Real estate | 2015 |
| 66 Tressillian Road Management Company Limited | Households | 2016 |
| 66 Twyford Avenue Limited | Households | 2021 |
| 66 Warriner Gardens Limited | Households | 2003 |
| 66 Warwick Square Estates Limited | Households | 2017 |
| 66 Westbourne Terrace Limited | Real estate | 2016 |
| 66 Weston Park Company Limited | Real estate | 2001 |
| 66 Wilberforce Road (Management) Limited | Real estate | 1999 |
| 66 Winchester Street Residents Limited | Households | 2003 |
| 66 Woodside Park Road Limited | Real estate | 2019 |
| 66, Victoria Road (Hampstead) Limited | Households | 1976 |
| 66-68 Bollo Bridge Road Limited | Real estate | 2005 |
| 66-68 Turney Road Limited | Households | 2002 |
| 66/67 Cadogan Place Limited | Households | 1999 |
| 66/67 PS Property Limited | Real estate | 2024 |
| 662 Sports Media Limited | Professional & scientific | 2024 |
| 662 Ventures Limited | Professional & scientific | 2015 |
| 663 Design Ltd | Professional & scientific | 2021 |
| 664 Holloway Road Ltd | Real estate | 2016 |
| 666 Contractors Ltd | Construction | 2016 |
| 666 Logistics Ltd | Transport & logistics | 2025 |
| 666 Ltd | Other services | 2022 |
| 666 Technologies Ltd | Professional & scientific | 2014 |
| 666 Telecom Ltd | Information & communication | 2024 |
| 666999 Ltd. | Wholesale & retail | 2023 |
| 666SERVICES Ltd | Administrative & support | 2024 |
| 667 Wandsworth Road Management Company Limited | Households | 2025 |
| 668 Bolso Ltd | Wholesale & retail | 2026 |
| 668 Forest Road E17 Limited | Real estate | 2025 |
| 668 Property Care Ltd | Real estate | 2025 |
| 66A Residents Limited | Households | 1997 |
| 66KHZ Productions Limited | Information & communication | 2009 |
| 66LOOP Technologies Ltd | Information & communication | 2023 |
| 67 & 69 Talbot Road (Freehold) Limited | Households | 2024 |
| 67 - 69 Drayton Gardens (Management) Limited | Real estate | 1998 |
| 67 Agar Grove Limited | Real estate | 2009 |
| 67 Alderbrook Road Limited | Real estate | 2003 |
| 67 Arthur Road Management Limited | Real estate | 2002 |
| 67 Artists Ltd | Professional & scientific | 2025 |
| 67 Bedford Road Freehold Limited | Households | 2024 |
| 67 Birdhurst Rise Management Company Ltd | Real estate | 2024 |
| 67 Bricks Ltd | Information & communication | 2007 |
| 67 Brondesbury Villas Limited | Real estate | 2014 |
| 67 Canfield Gardens Limited | Households | 2016 |
| 67 Chadwick Road Ltd | Real estate | 2017 |
| 67 Chichele Road Limited | Households | 2006 |
| 67 Clapton Common Limited | Households | 1979 |
| 67 Clifton Hill Ltd | Construction | 1986 |
| 67 Clissold Crescent Limited | Households | 2006 |
| 67 Comyn Road Residents Limited | Administrative & support | 2001 |
| 67 Cppr Freehold Limited | Households | 2022 |
| 67 Dean Street Limited | Real estate | 2025 |
| 67 Disraeli Road Freehold Ltd | Households | 2026 |
| 67 Eardley Crescent Limited | Households | 2023 |
| 67 Eaton Square Limited | Real estate | 1958 |
| 67 Finsbury Park RD Ltd | Households | 2016 |
| 67 Friern Road (Southwark) Right to Manage Company Limited | Households | 2014 |
| 67 Garratt Terrace Limited | Households | 2020 |
| 67 Gascony Avenue Limited | Real estate | 2020 |
| 67 Gloucester Street Limited | Households | 1985 |
| 67 Gloucester Terrace Limited | Real estate | 2001 |
| 67 Gordon Road Limited | Households | 2008 |
| 67 Gresham Road Freehold Limited | Households | 2009 |
| 67 Hammersmith Grove W.6. Limited | Real estate | 2000 |
| 67 Harrington Gardens Limited | Households | 2010 |
| 67 Health Limited | Professional & scientific | 2019 |
| 67 Highbury Park Ltd | Real estate | 2014 |
| 67 Hilldrop Crescent London N7 Limited | Households | 2000 |
| 67 Holloway Limited | Hospitality | 2016 |
| 67 Houston Road RTM Company Limited | Households | 2012 |
| 67 Kensington Gardens Square Limited | Households | 2004 |
| 67 Leigham Vale Freehold Limited | Households | 2023 |
| 67 Lewisham Way Management Company Limited | Real estate | 2004 |