| Encanta Brands Ltd | Manufacturing | 2025 |
| Enclosure Pro Limited | Transport & logistics | 2016 |
| EPM Surrey Limited | Other services | 2019 |
| Essential Holdings Limited | Professional & scientific | 2015 |
| Essential Scaffolding Group (London) Limited | Construction | 2009 |
| Essential Scaffolding Limited | Construction | 2010 |
| ET Ponmani Limited | Wholesale & retail | 2024 |
| Etheridge Investment Ltd | Real estate | 2024 |
| Eventtrackr Ltd | Information & communication | 2025 |
| EXCEL6 Investments Ltd | Professional & scientific | 2026 |
| Extendout Design and Build Ltd | Construction | 2017 |
| Extendout Project Management Services Limited | Construction | 2018 |
| Extra Discount Ltd | Wholesale & retail | 2024 |
| FDC Consultancy Ltd | Professional & scientific | 2019 |
| Fear Films Limited | Information & communication | 2019 |
| Fenwickcontrols Limited | Professional & scientific | 2025 |
| FG Media Ltd | Information & communication | 2026 |
| Fireflying Ltd | Professional & scientific | 2022 |
| Fluntum Creative Limited | Professional & scientific | 2022 |
| Flyerbox Limited | Professional & scientific | 2018 |
| Focus Building Ltd | Construction | 2015 |
| Focus Care Supported Living Ltd | Health & social care | 2008 |
| Focus Home Care Limited | Health & social care | 2023 |
| FOR the Love of Kinky Ltd | Wholesale & retail | 2024 |
| Forest Cat Music Ltd | Information & communication | 2010 |
| FOX HR Limited | Administrative & support | 2016 |
| Fraxel Fire Door Compliance Ltd | Public administration | 2023 |
| Frederick Thomas Ties Limited | Wholesale & retail | 2013 |
| Frontview Design Limited | Professional & scientific | 1997 |
| FTJ Property Ltd | Real estate | 2020 |
| Future Islands Coffee Limited | Hospitality | 2023 |
| G&D CUE Sports Ltd | Arts & recreation | 2025 |
| Garden Rescue Surrey Ltd | Administrative & support | 2014 |
| Gemelli Limited | Other services | 2005 |
| George Keywood Ltd | Professional & scientific | 2025 |
| Ginger Bees Limited | Hospitality | 2017 |
| Gkmc Consulting Ltd | Professional & scientific | 2017 |
| Goodeve-Docker Enterprises Ltd | Professional & scientific | 2017 |
| Graeme RAY Consulting Limited | Information & communication | 2009 |
| Gray Image Ltd | Arts & recreation | 2013 |
| Green Modenese Consultancy Limited | Information & communication | 2025 |
| Grig Electrical Ltd | Construction | 2023 |
| Grove House Management Limited | Households | 1964 |
| Grover ARC Limited | Wholesale & retail | 2017 |
| GS Payroll Ltd | Information & communication | 2025 |
| GSG Property Ltd | Real estate | 2024 |
| Gutierrez Architectural Design Ltd | Professional & scientific | 2026 |
| H & T Housing Ltd | Real estate | 2020 |
| H'S Fragrances Ltd | Manufacturing | 2025 |
| Haines Build Limited | Construction | 2018 |
| Hair&Beauty LAB Limited | Wholesale & retail | 2022 |
| Halo Network AI Limited | Information & communication | 2024 |
| Hampton Court Paddle Sports Limited | Administrative & support | 2020 |
| Hampton Electrical Services Ltd | Construction | 2018 |
| Hampton Station Estate Limited | Real estate | 2018 |
| Happy Squad Childcare Ltd | Health & social care | 2024 |
| Happy Squad Childminding Ltd | Health & social care | 2025 |
| Harbs & Co Cleaning Services Limited | Other services | 2026 |
| Harmony Care Enterprise Ltd | Real estate | 2018 |
| Hayley Bray Photography Limited | Professional & scientific | 2010 |
| Hayleyb Weddings Limited | Professional & scientific | 2014 |
| HBC REX Care Limited | Administrative & support | 2025 |
| HCP Engineering Limited | Manufacturing | 2008 |
| Heartlands Care Limited | Health & social care | 2010 |
| Heartlands Care Property Ltd | Health & social care | 2018 |
| Heritage Bidco Limited | Financial services | 2022 |
| Heritage Midco Limited | Financial services | 2022 |
| Hermione Wells Design Ltd | Professional & scientific | 2021 |
| Heronbrade Solutions Ltd | Information & communication | 2026 |
| Hex&Flex Collectibles Limited | Wholesale & retail | 2025 |
| Hhdata Ltd | Construction | 2026 |
| Hill and Sky Ltd | Professional & scientific | 2021 |
| HMF Cleaning Ltd | Administrative & support | 2020 |
| Homespace Solutions Limited | Construction | 2024 |
| Honeysoft Consultancy Ltd | Information & communication | 2014 |
| Howdens Roofing and Building Ltd | Construction | 2025 |
| HP Financial Services Ltd | Financial services | 2014 |
| HPL Renovation Ltd | Construction | 2022 |
| Hurstcroft Limited | Wholesale & retail | 2024 |
| I.D London Construction Ltd | Construction | 2023 |
| Iambe Advisory Limited | Professional & scientific | 2022 |
| IL Cavaliere Ltd | Hospitality | 2022 |
| IN Colour Services Limited | Construction | 2023 |
| In-Kilter Fitness Ltd | Arts & recreation | 2011 |
| Infinite Vision Ltd | Real estate | 2025 |
| Infinity Assets Investments Ltd | Real estate | 2021 |
| Informatix Limited | Information & communication | 1989 |
| Integrated Pharmaceutical Services (IPS) Limited | Manufacturing | 2009 |
| Integro Medical Clinics Limited | Health & social care | 2019 |
| Intellectual Fees Group Ltd | Administrative & support | 2025 |
| Intelligent Automations Solutions Ltd | Information & communication | 2026 |
| Interactive Import & Export Limited | Wholesale & retail | 2016 |
| Interactive Sports Media Ltd | Arts & recreation | 2009 |
| Intropico Ltd | Professional & scientific | 2013 |
| Ipsana Limited | Manufacturing | 2024 |
| Ipsco Limited | Manufacturing | 2014 |
| Island Farm Supermarket Ltd | Wholesale & retail | 2005 |
| ITS the Dogs Limited | Other services | 2016 |
| J Hallam Cleaning Services Ltd | Administrative & support | 2019 |
| James Kerby Music Services Limited | Education | 2025 |