| Go to My PUB Limited | Information & communication | 2017 |
| Goedz Ltd | Hospitality | 2026 |
| Good Behaviour Limited | Administrative & support | 2024 |
| Good Weather Ltd | Information & communication | 2026 |
| Gothonthehighstreet Ltd | Wholesale & retail | 2021 |
| GPD Property Service Ltd | Construction | 2025 |
| Green Cottage RIC Ltd | Administrative & support | 2026 |
| Green Oasis Landscaping Ltd | Administrative & support | 2026 |
| Greenstead Housing Ltd | Real estate | 2019 |
| Greentic AI Ltd | Information & communication | 2025 |
| Grey Havens Advisory Limited | Professional & scientific | 2025 |
| Griffin Hospitality Limited | Hospitality | 2014 |
| Gweal Ltd | Administrative & support | 2025 |
| H.C. Jones & Co (Surrey) Limited | Real estate | 1930 |
| Habgood Homes Limited | Hospitality | 2022 |
| Haider Green Ltd | Professional & scientific | 2012 |
| Hampton Court GIN Ltd | Wholesale & retail | 2022 |
| Hampton Hill Properties Limited | Real estate | 2024 |
| Hands on Skills Training Ltd | Education | 2006 |
| Handy FIX Homes Limited | Construction | 2025 |
| Handyvalue Limited | Administrative & support | 1992 |
| Hangtec Limited | Real estate | 2018 |
| Hannah Young Limited | Health & social care | 2016 |
| Hansen Consulting and Analytics Limited | Professional & scientific | 2015 |
| Harlo Clinic and Academy Ltd | Other services | 2025 |
| Harris Marine Ltd | Professional & scientific | 2026 |
| Hartswood Holdings Limited | Financial services | 2022 |
| Haven & Lore Limited | Wholesale & retail | 2025 |
| Hawkes Yard Home Owners Limited | Households | 2013 |
| Hawlings Property Holdings Limited | Professional & scientific | 2024 |
| Haythorne Properties Limited | Hospitality | 2023 |
| Hbma-Eu Limited | Other services | 2017 |
| Hbot Global Ltd | Other services | 2023 |
| HCC Estate Management (Molesey) Limited | Households | 1994 |
| HD Landscape Gardeners Ltd | Administrative & support | 2025 |
| Headley Homes Limited | Real estate | 2018 |
| Heath Consulting & Enterprises Limited | Real estate | 2016 |
| Heather Horler Soft Furnishings Ltd | Manufacturing | 2021 |
| Heathfield Art Limited | Arts & recreation | 2009 |
| Heathfield Place Limited | Real estate | 1998 |
| Helen Braybrook Ltd | Hospitality | 2018 |
| Helen Michels Consulting Ltd | Professional & scientific | 2017 |
| Henderson Mackillop & Co. Ltd | Professional & scientific | 2023 |
| Henrietta Place (Berrys Green) Management Company Limited | Households | 2023 |
| Heritage Inventories Limited | Other services | 2009 |
| HFP Consulting Limited | Professional & scientific | 2018 |
| Hgsr Limited | Administrative & support | 2017 |
| Hhkk Consultants Ltd | Real estate | 2006 |
| High on the HOG Ltd | Real estate | 2020 |
| Hinkell Engineering Solutions Limited | Manufacturing | 2010 |
| Hoskyn Consulting Ltd | Professional & scientific | 2026 |
| Househandlers Limited | Real estate | 2009 |
| Howe Productions Limited | Information & communication | 2024 |
| HRR Finance Ltd | Professional & scientific | 2021 |
| Hugh Jones Health Ltd | Administrative & support | 2020 |
| Humphries IFA Limited | Financial services | 2005 |
| Hurst Road Properties Limited | Real estate | 2022 |
| Husky Consulting Services Ltd | Professional & scientific | 2026 |
| HWC Strategy Ltd | Professional & scientific | 2024 |
| Hyer.Co Ltd | Administrative & support | 2019 |
| Hygge Gardens Ltd | Administrative & support | 2021 |
| I & H Property Management LLP | | 2013 |
| I 2 Impact Ltd | Professional & scientific | 2019 |
| I-Geoscience Limited | Professional & scientific | 2025 |
| IAN Bloom Limited | Health & social care | 2009 |
| IAN Wilson Education Associates Limited | Education | 2016 |
| Icmr Properties Ltd | Real estate | 2025 |
| Ideal Nannies Ltd | Administrative & support | 2008 |
| IF Web Services Ltd | Information & communication | 2009 |
| Ikonica Design Limited | Professional & scientific | 2013 |
| Impact Equity Limited | Financial services | 2021 |
| Impact Investment Ltd | Financial services | 2022 |
| Imperiet Developments Ltd | Construction | 2018 |
| Impex Lighting Limited | Manufacturing | 2005 |
| Impex Russell Limited | Wholesale & retail | 1946 |
| Imsm Properties Limited | Real estate | 2018 |
| Imza Consulting Ltd | Professional & scientific | 2026 |
| IN Harmony,Spirit and Balance Limited | Other services | 2000 |
| Inca Creative Enterprises Limited | Information & communication | 2006 |
| Independent Directors and Trustees Limited | Professional & scientific | 2019 |
| Indiaworks Limited | | 1985 |
| Indigo Distribution Limited | Wholesale & retail | 2004 |
| Infraspective Limited | Extraterritorial | 2014 |
| Ingens Opes Limited | Wholesale & retail | 2024 |
| Innotrue Ltd | Information & communication | 2026 |
| Innovirtus Limited | Professional & scientific | 2018 |
| Insight Health Analytics Limited | Professional & scientific | 2025 |
| Interact Consultants Ltd | Information & communication | 2025 |
| Investment & Life Assurance Group Limited | Other services | 2007 |
| Ipsos Engineering Ltd | Professional & scientific | 2009 |
| Iris Gardens Estate Company Limited | Real estate | 2015 |
| Iroko Consulting Limited | Administrative & support | 2018 |
| Irvin Leisure Entertainments Limited | Administrative & support | 1995 |
| Italian Burger Kitchen Ltd | Hospitality | 2026 |
| ITP Accountancy Limited | Professional & scientific | 2004 |
| Iwonderwhatdigital Ltd | Information & communication | 2023 |
| J M a Warne Ltd | Administrative & support | 2017 |
| J S Plumbing and Heating Installations Limited | Construction | 2010 |
| JA Plumbing & Heating Ltd | Construction | 2011 |
| Jamie Last Electrical Services Limited | Construction | 2018 |