| 5STAR Vans Ltd | Transport & logistics | 2019 |
| 5STARLINE Limited | Wholesale & retail | 2024 |
| 6 MHE Limited | Real estate | 2025 |
| 6 Vivian Limited | Real estate | 2023 |
| 61 Clifton Hill Management Company Limited | Hospitality | 2005 |
| 61 Welldon Crescent Management Limited | Households | 2010 |
| 62 Hindes RD Harrow Ltd | Real estate | 2009 |
| 63 65 KG ST Management Company Ltd | Real estate | 2015 |
| 63587 Limited | Hospitality | 2018 |
| 64 Welldon Crescent Management Company Limited | Real estate | 2005 |
| 65 & 65A Cunningham Park Limited | Real estate | 2021 |
| 65190 Limited | Hospitality | 2019 |
| 6525 Ltd | Hospitality | 2024 |
| 66 ALD Limited | Real estate | 2024 |
| 66 Alina Limited | Real estate | 2024 |
| 66 Infinity Limited | Real estate | 2024 |
| 67 (Bideford Avenue) Ltd | Construction | 2012 |
| 67 Inc Limited | Information & communication | 2012 |
| 67 London Limited | Wholesale & retail | 2025 |
| 67 Vaughan Road Management Limited | Administrative & support | 2015 |
| 68 and 68A Radnor Road Limited | Households | 2007 |
| 68 Longley Road (Freehold) Limited | Extraterritorial | 2012 |
| 6AD Forged Wheels Ltd | Wholesale & retail | 2020 |
| 6FIGUREMUSIC Ltd | Other services | 2017 |
| 7 -10 Trevor Close RTM Company Limited | Financial services | 2021 |
| 7 Heath Road Management Limited | Real estate | 2010 |
| 7 Ice Ltd | Hospitality | 2014 |
| 7 Oak Road Ltd | Construction | 2019 |
| 7 Properties Limited | Real estate | 2014 |
| 7 Redcliffe Gardens Limited | Households | 2021 |
| 7 Shepherdess Place Limited | Construction | 2022 |
| 7 Star Fades Barbershop Limited | Other services | 2021 |
| 70 Welldon Crescent Limited | Real estate | 2015 |
| 70, Chelsham Road Enfranchisement Company Limited | Households | 2005 |
| 70-76 Bell Street Limited | Real estate | 2007 |
| 71 Kenton Road (Management) Limited | Households | 1966 |
| 72 HA1 LLP | | 2020 |
| 72 Hindes Road Management Company Limited | Households | 2007 |
| 72 Vaughan Road Management Company Limited | Households | 2007 |
| 73 Hindes Road Management Ltd | Administrative & support | 2013 |
| 73 Manor Road (Harrow) Limited | Households | 2025 |
| 74 Palmerston Road HA3 Limited | Real estate | 2017 |
| 75 Barking Road Limited | Real estate | 2014 |
| 75 Harrow View Residents Limited | Administrative & support | 2010 |
| 76 Devonshire Road Freehold Limited | Professional & scientific | 2022 |
| 76 Kenton Road Management Co. Limited | Hospitality | 1971 |
| 78 Welldon Crescent Limited | Real estate | 2004 |
| 786 Properties Ltd | Real estate | 2016 |
| 786T Limited | Health & social care | 2021 |
| 7F Group Ltd | Real estate | 2023 |
| 7F Ltd | Professional & scientific | 2015 |
| 7K Healthcare Ltd | Other services | 2019 |
| 7LAX Estates Ltd | Real estate | 2025 |
| 7LS FH Limited | Real estate | 2025 |
| 7LS Holding Limited | Real estate | 2021 |
| 8 and 8A Nibthwaite Road (Freehold) Company Limited | Households | 2016 |
| 8 Auriol Road Limited | Other services | 2014 |
| 8 Castle Acre Limited | Real estate | 2016 |
| 8 MHE Limited | Real estate | 2025 |
| 81 Degrees Ltd | Wholesale & retail | 2026 |
| 81 Hinds Road Management Limited | Households | 2004 |
| 8183 Ltd | Real estate | 2021 |
| 82 Belsize Park Gardens Limited | Households | 2005 |
| 83 Harvest Road (Management) Limited | Real estate | 1982 |
| 84 Lawrie Park Road Management Limited | Real estate | 2001 |
| 85 and Sunny Limited | Real estate | 2018 |
| 85 Haverhill Road Management Limited | Households | 2009 |
| 86 Hindes Road RTM Company Ltd | Households | 2020 |
| 86 KPR Limited | Households | 2015 |
| 86/86A Kenton Lane Limited | Extraterritorial | 2013 |
| 866 Harrow Road RTM Company Limited | Households | 2025 |
| 86PINNERVIEW Limited | Real estate | 2024 |
| 87 Idmiston Road (Forest Gate) Management Limited | Real estate | 2021 |
| 87 Mortimer Street RTM Company Limited | Households | 2016 |
| 87 Welldon Crescent Limited | Real estate | 2023 |
| 88 Consulting Limited | Professional & scientific | 2014 |
| 888 Management Ltd | Professional & scientific | 2003 |
| 89 Elms Capital Limited | Financial services | 2025 |
| 89 Welldon Crescent Management Limited | Real estate | 2007 |
| 9 Airlie Gardens Management Limited | Households | 1986 |
| 9 Evesham House Limited | Real estate | 2025 |
| 9 Hildyard Road Freehold Limited | Households | 2004 |
| 9 ST. Cross Street Limited | Other services | 1994 |
| 9 Star Motors Ltd | Wholesale & retail | 2022 |
| 9 Trading UK Limited | Construction | 2007 |
| 93142 Limited | Information & communication | 2022 |
| 94 Elements Ltd | Administrative & support | 2025 |
| 940234 Limited | Professional & scientific | 2019 |
| 96 Barnhill Road Ltd | Real estate | 2026 |
| 97 Harrow View Limited | Real estate | 2023 |
| 97 Marylands Road Limited | Construction | 2014 |
| 98 Glengall Road Limited | Households | 1999 |
| 984 Property Group Ltd | Real estate | 2024 |
| 99 Acre Ltd | Financial services | 2016 |
| 99 Clarendon Gardens (Wembley) Management Limited | Real estate | 2010 |
| 9BY16 Limited | Arts & recreation | 2021 |
| 9FINE Limited | Wholesale & retail | 2024 |
| A & a Assets Ltd | Real estate | 2016 |
| A & a London Properties Ltd | Real estate | 2018 |
| A & a Subs Limited | Hospitality | 2016 |