| 9-12 Collier Close RTM Company Limited | Households | 2026 |
| 9-12 Marcus Terrace Freehold Limited | Households | 2026 |
| 9-12 Masefield Crescent Freehold Company Limited | Households | 2022 |
| 9-12 Westbourne Crescent Ltd | Households | 2005 |
| 9-14 Rowan Court RTM Company Ltd | Households | 2015 |
| 9-16 Bluegate Mews RTM Company Limited | Households | 2018 |
| 9-16 Leith Mansions Ltd | Households | 2009 |
| 9-16 Stamford Hill Mansions Freehold Limited | Households | 2013 |
| 9-INTELLIGENCE Limited | Administrative & support | 2025 |
| 9.12 Holdings Limited | Financial services | 2023 |
| 9.12 Merchandising Limited | Wholesale & retail | 2023 |
| 9/10 Regent Square Management Company Limited | Households | 1987 |
| 9/10 Woodside Grange Limited | Households | 1988 |
| 9/11 Centre for Counterterrorism and Security | Professional & scientific | 2024 |
| 9/11 Rumsey Road Management Limited | Households | 1990 |
| 9/23 Linden Mansions Management Limited | Extraterritorial | 2011 |
| 90 Admin Hub. Ltd | Professional & scientific | 2024 |
| 90 Agar Grove Property Management Limited | Real estate | 2016 |
| 90 Ballater Road Management Company Limited | Real estate | 2010 |
| 90 Banner Street RTM Company Limited | Households | 2012 |
| 90 Bartholomew Road Ltd | Households | 2024 |
| 90 Belsize Road Limited | Households | 2015 |
| 90 Belvedere Road (Upper Norwood) Residents Association Limited | Real estate | 2001 |
| 90 Bronvil RTM Company Limited | Households | 2024 |
| 90 Cambridge Gardens Limited | Households | 1993 |
| 90 Chester Road Limited | Administrative & support | 2016 |
| 90 Cleveland Street Limited | Real estate | 2025 |
| 90 Colney Hatch Lane Holdings Ltd | Households | 2026 |
| 90 Days Creative Ltd | Professional & scientific | 2020 |
| 90 Degrees Picture Framing Limited | Wholesale & retail | 2015 |
| 90 Downs Park Road RTM Company Limited | Administrative & support | 2006 |
| 90 Earlham Grove Freehold Limited | Households | 2025 |
| 90 Eaton Place Freehold Ltd | Real estate | 2025 |
| 90 Eaton Place Limited | Financial services | 2024 |
| 90 Edgeley Road Limited | Real estate | 2018 |
| 90 Elgin Avenue Management Limited | Real estate | 1999 |
| 90 Endlesham Road Limited | Households | 2016 |
| 90 Farleigh Road Freehold Management Limited | Households | 2011 |
| 90 Fellows Road (Management) Limited | Households | 2019 |
| 90 Ferme Park Road Limited | Households | 2023 |
| 90 Fitzjohns Avenue Limited | Financial services | 2017 |
| 90 Fordhook Avenue Limited | Households | 2022 |
| 90 Fortess Road Limited | Hospitality | 2003 |
| 90 Four Limited | Professional & scientific | 2022 |
| 90 Friern Road (Freehold) Limited | Households | 2020 |
| 90 Gloucester Terrace Limited | Real estate | 2017 |
| 90 Gloucester Terrace Management Company Limited | Households | 2018 |
| 90 Greenwood Road Residents Limited | Other services | 1991 |
| 90 Harbut Road Limited | Households | 2024 |
| 90 Holland Road Freehold Limited | Real estate | 2005 |
| 90 Hornsey Lane Limited | Households | 2007 |
| 90 Kensington Park Road Management Company Limited | Households | 1979 |
| 90 Ladbroke Grove Limited | Households | 2015 |
| 90 Lady Margaret Road Limited | Hospitality | 2009 |
| 90 Landor Road Freeehold Company Limited | Households | 2024 |
| 90 Landor RTM Company Limited | Households | 2019 |
| 90 Lauriston Road Freehold Limited | Real estate | 2006 |
| 90 Leighton Gardens Limited | Households | 2023 |
| 90 Lewisham Way Limited | Professional & scientific | 2001 |
| 90 Lewisham Way Management Limited | Administrative & support | 2014 |
| 90 Lordship Park Limited | Households | 2008 |
| 90 Manor Road Management Limited | Real estate | 2013 |
| 90 Mill Lane Freehold Limited | Real estate | 2014 |
| 90 Milton Grove Limited | Households | 2024 |
| 90 North Ltd | Information & communication | 2022 |
| 90 North Real Estate Partners LLP | | 2011 |
| 90 Northdown Road RTM Company Limited | Households | 2006 |
| 90 Offord Road Ltd | Households | 2025 |
| 90 Onslow Gardens Freehold Limited | Professional & scientific | 1996 |
| 90 Overstone Road Limited | Households | 2018 |
| 90 Penge Road Property Management Company Ltd | Households | 2014 |
| 90 Penwith Road Limited | Real estate | 2008 |
| 90 Philbeach Management Limited | Households | 1986 |
| 90 Redchurch Street (Freehold) Limited | Households | 2013 |
| 90 Seymour Road Management Limited | Households | 2015 |
| 90 Shirland Road Management Company Limited | Households | 1986 |
| 90 Shooters Hill Road RTM Company Limited | Real estate | 2016 |
| 90 Sinclair Road Management Company Limited | Households | 2003 |
| 90 Sloane Street Limited | Health & social care | 2008 |
| 90 Sports Management UK Limited | Arts & recreation | 2016 |
| 90 Sterndale Road Limited | Real estate | 1973 |
| 90 Studios Ltd | Information & communication | 2026 |
| 90 TBR Management Limited | Real estate | 2015 |
| 90 UBR Management Limited | Real estate | 2002 |
| 90 Westville Road (Freehold) Limited | Households | 2018 |
| 90 York Way Tenant Limited | Real estate | 2017 |
| 90'S Baby Show Limited | Information & communication | 2015 |
| 90-92 Nightingale Road (Freehold) Limited | Households | 2018 |
| 90/92 Islington High Street Freehold Company Limited | Households | 2026 |
| 90/92 Malyons Road Management Company Limited | Households | 2012 |
| 900 Art and Design Ltd | Wholesale & retail | 2019 |
| 900 Studios Limited | Manufacturing | 2017 |
| 9000 Cars Ltd | Transport & logistics | 2024 |
| 9008 Holdings Ltd | Financial services | 2026 |
| 901 Brickell Key Blvd 605 Ltd | Financial services | 2020 |
| 9010 Consultants Limited | Professional & scientific | 2011 |
| 901WD Ltd | Wholesale & retail | 2018 |
| 902 Garratt Lane Freehold Ltd | Real estate | 2018 |
| 904 Inc Ltd | Arts & recreation | 2026 |
| 904.1 Services Limited | Professional & scientific | 2022 |