| General Hvac Solutions UK Limited | Professional & scientific | 2007 |
| GFF Tonbridge Ltd | Real estate | 2022 |
| Gibbs Family Investment Company Limited | Real estate | 2018 |
| Gilbert Albert Ltd | Manufacturing | 2020 |
| Glenslade Estates Ltd | Administrative & support | 2005 |
| Global Gala Limited | Arts & recreation | 2012 |
| Globe Bidco Limited | Professional & scientific | 2020 |
| Globe Midco 1 Limited | Professional & scientific | 2020 |
| Globe Midco 2 Limited | Professional & scientific | 2020 |
| Globe Topco Limited | Professional & scientific | 2020 |
| Golfpave Logistics LLP | | 2023 |
| Good for Food Limited | Real estate | 2013 |
| Good Moves Ventures Limited | Real estate | 2018 |
| Greenstream AHU Maintenance Limited | Professional & scientific | 2024 |
| Grosvenor View Limited | Real estate | 2014 |
| Grovedyke Building & Civil Engineering Limited | Construction | 1992 |
| GSP Home Improvements Ltd | Construction | 2024 |
| Gulix Deliveries LLP | | 2023 |
| H Ahmed Investments Ltd | Real estate | 2017 |
| Haberdashers' Elstree Schools Foundation | Education | 2004 |
| Hailmax UK Limited | Professional & scientific | 2019 |
| Haircut for HIM Limited | Other services | 2010 |
| HAK Solutions Ltd | Other services | 2015 |
| Halco Limited | Real estate | 1947 |
| Harrison-Ainsworth Limited | Arts & recreation | 2003 |
| Harvest Trading Worldwide LLP | | 2013 |
| Hassalo Limited | Extraterritorial | 2018 |
| Hatton Bond Associates Limited | Professional & scientific | 2020 |
| Hawtrees Management Company Limited | Households | 2021 |
| HAY Property Ltd | Real estate | 2022 |
| Healthy Eating and Life Ltd | Health & social care | 2017 |
| Heath Crawford Financial Services LLP | | 2008 |
| Hedlamps Limited | Wholesale & retail | 2022 |
| Helion Consulting Ltd | Information & communication | 2025 |
| Hertfordshire Limited | Professional & scientific | 2007 |
| Hillbond Associates Limited | Real estate | 2017 |
| HM Gold Limited | Real estate | 2023 |
| Home Farm Glamping Limited | Hospitality | 2016 |
| Homeneed Limited | Real estate | 1985 |
| Honorary Logistics LLP | | 2023 |
| House of Bentley Limited | Administrative & support | 1986 |
| House of Lenses Limited | Wholesale & retail | 2014 |
| ICM Commercial Services Limited | Professional & scientific | 2002 |
| Imagenet (London :Trading AS A1 Disposables) Limited | Other services | 2013 |
| Impact Epos Limited | Information & communication | 2013 |
| Ingenious Deliveries LLP | | 2023 |
| Innovation Consultants Limited | Professional & scientific | 2019 |
| Insightful Consultants Ltd | Information & communication | 2024 |
| Ismail Capital Partners Limited | Professional & scientific | 2015 |
| ISS Safety Limited | Manufacturing | 2004 |
| Itra Consulting Limited | Professional & scientific | 2002 |
| J & L Selt Property Ltd | Real estate | 2018 |
| J. Isaacs (Slough) Limited | Real estate | 1939 |
| J. Isaacs Management Limited | Real estate | 1958 |
| Jackie ASH Catering Ltd | Hospitality | 2024 |
| Jaclin Enterprises Limited | Financial services | 2020 |
| Jafri Investments Limited | Real estate | 2018 |
| Jangle Online Ltd | Professional & scientific | 2022 |
| JD Customer Solutions Limited | Professional & scientific | 2025 |
| Jnetics | Administrative & support | 2009 |
| Josky Limited | Arts & recreation | 2018 |
| JP UK Property Ltd | Real estate | 2023 |
| Jponlinestores Ltd | Wholesale & retail | 2017 |
| Julian Alexander & Associates Ltd | Professional & scientific | 2018 |
| K.I.M.A. Heating & Plumbing UK Limited | Construction | 2012 |
| Kaizen Health Group Ltd | Wholesale & retail | 2020 |
| Keane R. C. S Ltd | Construction | 2026 |
| Kenzen Ventures Limited | Wholesale & retail | 2021 |
| Keydriver Services Ltd | Administrative & support | 2021 |
| Kharido Limited | Wholesale & retail | 2023 |
| Kilker Projects Limited | Construction | 2014 |
| Kris-Ana Ltd. | Wholesale & retail | 2011 |
| Labade Logistics LLP | | 2023 |
| Landsdown Services Limited | Other services | 2018 |
| Lapirka Ltd | Wholesale & retail | 2022 |
| Lauden Investments Limited | Real estate | 1962 |
| Laxmi Govinda Properties Ltd | Real estate | 2017 |
| LCC National Ltd | Professional & scientific | 2022 |
| Leadville Partners Limited | Professional & scientific | 2014 |
| Leafy Green Limited | Real estate | 2015 |
| Leask & Eacott Limited | Construction | 1985 |
| Lewbox Limited | Financial services | 2024 |
| Lingate Ltd | Real estate | 2004 |
| Littletinyface LLP | | 2014 |
| Loaner Ltd | Financial services | 2026 |
| Lona (U.K.) Limited | Wholesale & retail | 1999 |
| Londom Holding LLP | | 2025 |
| London Balance and Wellness Ltd | Wholesale & retail | 2019 |
| London Luton Limited | Hospitality | 2013 |
| London Salvage Services Ltd | Extraterritorial | 2020 |
| LP Aero Ltd | Transport & logistics | 2006 |
| LSS / London Salvage Services Ltd | Administrative & support | 2011 |
| Lunar Sea Properties Limited | Real estate | 2003 |
| M&M Care Management Services Limited | Education | 2013 |
| Macro Distribution LLP | | 2023 |
| Madbon Limited | Extraterritorial | 2008 |
| Magik Technologies Limited | Information & communication | 2017 |
| Magnate Merchants Ltd | Wholesale & retail | 2019 |
| Maia Franceschi Limited | Arts & recreation | 2022 |
| MAK21 Ltd | Professional & scientific | 2024 |