| Ginger Corp Limited | Financial services | 2020 |
| Ginos Tailors Limited | Wholesale & retail | 2014 |
| Giraffe Supplies Ltd | Wholesale & retail | 2007 |
| Girl in Green Ltd | Information & communication | 2022 |
| Gjheducation Ltd | Education | 2018 |
| Global Bespoke Finance Limited | Financial services | 2024 |
| Global Builders Southern Limited | Construction | 2008 |
| Global Edtech Testbed Network Community Interest Company | Education | 2020 |
| Global Executive Capital Limited | Financial services | 2025 |
| Globoforce UK Limited | Information & communication | 2007 |
| GLS Men's Grooming Limited | Other services | 2023 |
| Gluey UK Limited | Professional & scientific | 2013 |
| Goatley Ltd | Arts & recreation | 2023 |
| Godbest Car Wash Services Ltd | Wholesale & retail | 2025 |
| Godbest Enterprises Limited | Real estate | 2024 |
| Gold Standard Tutoring Ltd | Education | 2024 |
| Goldlark Consulting Ltd | Professional & scientific | 2025 |
| Goldsmith Plumbing Ltd | Construction | 2025 |
| Golf Tour Trophies Ltd | Wholesale & retail | 2026 |
| Goodhart Treecare Ltd | Agriculture & fishing | 2021 |
| Goodheart Properties Ltd | Real estate | 2016 |
| Gosia (London) Limited | Professional & scientific | 2021 |
| Gough Transport Limited | Transport & logistics | 2014 |
| GP Surveys Ltd | Professional & scientific | 2020 |
| Graham Granger Limited | Professional & scientific | 2018 |
| Grange Brook Property Ltd | Real estate | 2026 |
| Grasp Ventures Limited | Information & communication | 2016 |
| Green Bay Solutions Ltd | Construction | 2024 |
| Green Field Services Limited | Administrative & support | 2026 |
| Green Whale Consulting Ltd | Professional & scientific | 2019 |
| GRJ Investments Ltd | Real estate | 2019 |
| GSR Management Consultancy Limited | Professional & scientific | 2019 |
| Gulhak Star Limited | Professional & scientific | 2012 |
| Gurupro Ltd | Arts & recreation | 2026 |
| GUY Vesey Limited | Arts & recreation | 2018 |
| H & J Electrical Services Limited | Construction | 1995 |
| H Jalal Ltd | Other services | 2019 |
| H&J Building Services Ltd | Construction | 2021 |
| H2O West Wickham Ltd | Hospitality | 2025 |
| HA Property Services Limited | Real estate | 2020 |
| Hair by Nese Ltd | Other services | 2022 |
| Hally Property Group Ltd | Real estate | 2019 |
| Hally Solutions Ltd | Administrative & support | 2019 |
| Hamill Consulting Ltd | Other services | 2022 |
| Hanbury Homes Limited | Real estate | 2001 |
| Hance Property Limited | Real estate | 2025 |
| Hance Stay Management Limited | Real estate | 2026 |
| Happy at Home (Bromley) Limited | Other services | 2013 |
| Hartland Psychology Limited | Health & social care | 2010 |
| Harvest Pharma Services Ltd | Professional & scientific | 2009 |
| Hatchek Consultancy Ltd | Financial services | 2015 |
| Haver Investments Ltd | Professional & scientific | 2014 |
| Hays Property Development Ltd | Construction | 2025 |
| HBS Professional Developments Ltd | Construction | 2024 |
| Headland Development Management Limited | Construction | 2015 |
| Healthbeam Ltd | Health & social care | 2025 |
| Heartleap Publishing Ltd | Information & communication | 2025 |
| Heathaus Limited | Construction | 2021 |
| Heathend Residents Association Limited | Households | 1978 |
| Helen Cowgill Physiotherapy Limited | Health & social care | 2014 |
| Herbert Sports (East Grinstead) Limited | Wholesale & retail | 1998 |
| Herbs Song Limited | Health & social care | 2008 |
| Herne Hill Cycle Coaching and Administration Limited | Arts & recreation | 2013 |
| Hextable Computer Services Ltd | Information & communication | 2016 |
| HEY Kino Ltd | Information & communication | 2025 |
| Hezron Limited | Real estate | 2005 |
| HHS Construction Solutions Ltd | Professional & scientific | 2024 |
| HI Fliers Limited | Administrative & support | 2023 |
| HI Labs Ltd | Information & communication | 2026 |
| High Voltage Rail Limited | Construction | 2022 |
| Highflow Heating & Plumbing Ltd | Administrative & support | 2017 |
| Highflow Properties Ltd | Construction | 2022 |
| Hillaways (Property Development) Limited | Construction | 1977 |
| Hintsa Performance UK Limited | Health & social care | 2016 |
| HJL Accountancy Limited | Professional & scientific | 2021 |
| HJS Management Services Ltd | Professional & scientific | 2014 |
| Hnyc Studio Ltd | Professional & scientific | 2021 |
| Hogan International Limited | Construction | 2016 |
| Holchester Ltd | Administrative & support | 2016 |
| Holland Consulting Services Ltd | Information & communication | 2025 |
| Holland Park Services Limited | Energy | 2009 |
| Home Today Limited | Real estate | 2019 |
| Hoptics Micropub Ltd | Hospitality | 2026 |
| Horizons Properties Limited | Real estate | 2018 |
| Hosting 21 Ltd | Information & communication | 2024 |
| Houghton Property Advisers LLP | | 2010 |
| Hoursback Ltd | Professional & scientific | 2026 |
| House and Home Direct Ltd | Wholesale & retail | 2020 |
| House of Barbers Limited | Other services | 2015 |
| House of Glamour Limited | Other services | 2017 |
| HP Electrical South East Ltd | Construction | 2024 |
| HSP Group Global Limited | Professional & scientific | 2021 |
| Human Decisions Ltd | Professional & scientific | 2019 |
| Humanflow AI Ltd | Information & communication | 2026 |
| Hustle & Bustle Ltd | Wholesale & retail | 2025 |
| Hutchinson Enterprises Ltd | Real estate | 2020 |
| I J S Services Ltd | Administrative & support | 2003 |
| I'Ll Take the Lead Ltd | Other services | 2021 |
| IAN F Smith Ltd | Administrative & support | 2015 |
| IC Exploration Limited | Mining & quarrying | 2008 |