| "Channing House"Incorporated Highgate | Education | 1899 |
| 120, Villiers Road Limited | Households | 1980 |
| 15 Cromwell Place Management Company Limited | Households | 1999 |
| 25 Northwood Road (Freehold) Company Limited | Households | 2006 |
| 34 Great North Road London Limited | Administrative & support | 2008 |
| Adwoa Doll Ltd | Manufacturing | 2021 |
| Audire Limited | Professional & scientific | 2022 |
| Beverley Minster Shop Limited | Wholesale & retail | 2000 |
| Birkbeck and William Ellis Schools Trust | Professional & scientific | 2002 |
| Claremont Flat Management Limited | Households | 1985 |
| Cogress Blackheath Road Limited Partnership | | 2018 |
| Cogress Caroline Street 2 Limited Partnership | | 2020 |
| Cogress Equipoint 2 Limited Partnership | | 2020 |
| Cogress Gransden Limited Partnership | | 2016 |
| Cogress Jubilee Street Limited Partnership | | 2019 |
| Cogress Kingmaker Limited Partnership | | 2018 |
| Cogress Kingsway Hove Limited Partnership | | 2018 |
| Cogress London Road Limited Partnership | | 2017 |
| Cogress Mare Street 2 Limited Partnership | | 2018 |
| Cogress Mare Street Limited Partnership | | 2018 |
| Cogress Marine Ices Limited Partnership | | 2019 |
| Cogress Milespit Hill (NO 2) Limited Partnership | | 2019 |
| Cogress Newton Road Limited Partnership | | 2019 |
| Cogress Seven Sisters Limited Partnership | | 2018 |
| Cogress Stockwood Road Limited Partnership | | 2017 |
| Construction Profiles Limited | Construction | 1983 |
| Cosgrave Consulting Ltd | Professional & scientific | 2022 |
| CRL Dominion Ltd | Real estate | 2016 |
| Data Capital Ltd | Extraterritorial | 2015 |
| Decoratum Limited | Wholesale & retail | 2004 |
| Fonseca's Deli Ltd | Hospitality | 2018 |
| Foresight Management Limited | Real estate | 1996 |
| Freetime Industries Limited | | 1985 |
| Goldsmith Accounting Services Ltd | Professional & scientific | 2014 |
| Hema Investment Ltd | Real estate | 2021 |
| Highgate Cemetery Limited | Arts & recreation | 1983 |
| Holne Lodge Residents Association Limited | Households | 1984 |
| J.G.B. Software Limited | | 1986 |
| Jacksons Lane Property Limited | Households | 2023 |
| John Heath Digital Designer Limited | Professional & scientific | 2006 |
| Lindsey Property Ltd | Real estate | 2020 |
| London School of Reflexology Limited | Education | 2003 |
| Lorelei House Management Company Limited | Households | 1990 |
| Made in England Creative Limited | Other services | 2009 |
| North London Bowling Club,Limited(The) | Arts & recreation | 1924 |
| Parliament Properties Limited | Real estate | 1995 |
| Prickett & Ellis Highgate Ltd | Real estate | 2020 |
| Roll-A-Ramp (Europe) Ltd. | Wholesale & retail | 1999 |
| Rotai (UK) Ltd | Wholesale & retail | 2021 |
| Sunblade Limited | Hospitality | 2015 |
| THE Highgate Literary and Scientific Institution | Professional & scientific | 2024 |
| THE Small Garden Company Limited | Administrative & support | 2008 |
| THE Student Clubhouse LLP | | 2013 |
| Treat Wellness Limited | Health & social care | 2025 |
| Tripwire Magazine Limited | Administrative & support | 2016 |
| Witanhurst Construction Management Limited | Administrative & support | 2008 |