| Greenwood Reversions Limited | Construction | 1987 |
| Greg Holdings Limited | Professional & scientific | 1996 |
| Greylag Limited | Information & communication | 1976 |
| Gridx Ltd | Information & communication | 2025 |
| Grisham Lloyd Limited | Professional & scientific | 1995 |
| GRM Estates Limited | Real estate | 2002 |
| Groove Gate Ltd | Hospitality | 2023 |
| Grosvenor City (UK) Ltd. | Administrative & support | 2001 |
| Grosvenor Kitchen Design Limited | Wholesale & retail | 1996 |
| Groundserv Surrey Limited Partnership | | 2001 |
| Grove END (Management) Limited | Real estate | 1986 |
| Grove Hotel Ltd | Construction | 2000 |
| Growinsteps Trading Limited | Wholesale & retail | 2011 |
| GRW Commercial Limited | Administrative & support | 2005 |
| GS Lunnon Consulting Limited | Professional & scientific | 1999 |
| GSC Partners Ltd | Real estate | 2007 |
| GSG Building Services Limited | Administrative & support | 2002 |
| GSN Corporate Advisory Ltd | Professional & scientific | 2022 |
| GSN Maintenance Limited | Construction | 1999 |
| GSS Financial Solutions Ltd | Professional & scientific | 2015 |
| GTI Ventures Limited | Financial services | 2024 |
| Guardian International Shipping Company (U.K.) Ltd. | Wholesale & retail | 1993 |
| Guda Systems Limited | Information & communication | 2007 |
| Guice Limited | Information & communication | 1999 |
| Guildford Audio Limited | Wholesale & retail | 2003 |
| Guildford Group Ltd | Real estate | 2023 |
| Guildford Securities Limited | Real estate | 1971 |
| Guildown House Limited | Information & communication | 2003 |
| Guitar Village Limited | Wholesale & retail | 2001 |
| Gunpowder Media Ltd | Information & communication | 2005 |
| Gurmail Property Limited | Real estate | 2026 |
| GVG Horley Limited | Professional & scientific | 2000 |
| GYP Properties Limited | Hospitality | 1963 |
| H & B (Builders Merchants) Limited | Extraterritorial | 1952 |
| H & B.M.Investments (London) Limited | Financial services | 1956 |
| H & C Construction (UK) Ltd | Construction | 2005 |
| H & R Carpentry Works Limited | Construction | 2003 |
| H & S Drain Care Limited | Administrative & support | 2002 |
| H + L Hydraulic Limited | Extraterritorial | 1974 |
| H C Secretarial Limited | Extraterritorial | 2004 |
| H D Retail Limited | Wholesale & retail | 2013 |
| H H F M Limited | Hospitality | 2002 |
| H Peel (Patterns & Castings) Limited | Manufacturing | 1975 |
| H T Development (UK) Ltd | Real estate | 2007 |
| H&A Software Consultancy Limited | Information & communication | 2015 |
| H. Webber & Sons Limited | Wholesale & retail | 1951 |
| H.H.A. (Holdings) Limited | Real estate | 1974 |
| H.M. Supplies Limited | Wholesale & retail | 1976 |
| H.P. Atlas Limited | Manufacturing | 1986 |
| H.P.D. Factory Group Limited | | 1985 |
| H.T.C. Limited | Professional & scientific | 1988 |
| H.Wallis Limited | Wholesale & retail | 1960 |
| Hafsah's Jewels Limited | Wholesale & retail | 2024 |
| HAH Design & Build Limited | Construction | 2006 |
| Hair Associates (Richmond) Limited | Arts & recreation | 1994 |
| Haji & Sons Limited | Wholesale & retail | 2005 |
| HAK Computing Limited | Information & communication | 2003 |
| Hakim FRY International Limited | Professional & scientific | 2000 |
| Hala Catering Ltd | Hospitality | 2023 |
| Halcare Ltd | Health & social care | 2025 |
| Halcyon Developments Limited | Construction | 1995 |
| Hallmark Financial Planning Ltd | Financial services | 2007 |
| Halmond Limited | Extraterritorial | 1989 |
| Halstruct Limited | Professional & scientific | 2023 |
| Hamble Yachts (Brokers) Limited | | 1964 |
| Hamdon Electrical Limited | | 1976 |
| Hamilcourt Industrial Holdings Limited | Construction | 1980 |
| Hammond Associates UK Limited | Professional & scientific | 2001 |
| Hampshire Commodities Limited | Other services | 1993 |
| Hampshire Imports Ltd | Wholesale & retail | 2023 |
| Hampshire Stockholders Limited | | 1984 |
| Handmax Kamtec Limited | Wholesale & retail | 2021 |
| Hands on Health - Family Chiropractic Ltd | Health & social care | 2007 |
| Hanhud Ltd | Health & social care | 2013 |
| Hannah RGN Service Ltd | Health & social care | 2019 |
| Hans Invest Ltd | Financial services | 2019 |
| Hanstin Limited | Information & communication | 1986 |
| Harans & Co Ltd | Professional & scientific | 2007 |
| Harbay Properties Limited | Extraterritorial | 1949 |
| Hardbase 2000 Limited | Construction | 1998 |
| Hardel Rise Management Limited | Real estate | 1998 |
| Hardil Limited | Real estate | 1998 |
| Harding Auto Services Ltd | Wholesale & retail | 2006 |
| Harestone Management Services Limited | Other services | 1984 |
| Harestone Place Residents Association (Caterham) Limited | Households | 1988 |
| Hargeisa Financial Services Corporation Limited | Financial services | 2006 |
| Hari Fruit and VEG Supplies Ltd | Wholesale & retail | 2024 |
| Harna Group Services Ltd | Health & social care | 2017 |
| Haroon Barbers Ltd | Other services | 2022 |
| Harper Christie Ltd | Administrative & support | 2024 |
| Harper Limited | Wholesale & retail | 1979 |
| Harpspeed Limited | Professional & scientific | 1983 |
| Harrington Flats Limited | Households | 1976 |
| Harris & Associates Limited | Wholesale & retail | 2001 |
| Harris & Bailey Limited | Wholesale & retail | 1913 |
| Harris Carr Limited | Professional & scientific | 2004 |
| Harris Real Estate Limited | Real estate | 2002 |
| Harrods(Buenos Aires)Limited | Wholesale & retail | 1913 |
| Harrods(South America),Limited | Professional & scientific | 1912 |
| Harrop HR Missions Ltd | Other services | 2006 |