| Glory Global Solutions (International) Limited | Manufacturing | 2008 |
| Glosec Ltd | Information & communication | 2011 |
| Glowfit Solutions Ltd | Other services | 2022 |
| Glowmac Engineering Limited | Manufacturing | 2025 |
| Glyn R Jones Limited | Professional & scientific | 2016 |
| GM IT Consultancy Ltd | Information & communication | 2011 |
| GM MED Solutions Limited | Professional & scientific | 2009 |
| GM Security Solutions Ltd | Construction | 2020 |
| GMC Brickwork Ltd | Construction | 2017 |
| GMD Associates Limited | Real estate | 2013 |
| GMF Corp Limited | Information & communication | 2017 |
| GMJ Coaching Ltd | Arts & recreation | 2021 |
| GMT Building & Consultancy Limited | Professional & scientific | 2013 |
| GMT Property Rental Services Ltd | Real estate | 2019 |
| Go Driving Services Ltd | Transport & logistics | 2018 |
| Go Figure Ltd | Professional & scientific | 2008 |
| Go Fresh Fish Ltd | Wholesale & retail | 2024 |
| Go Globe Trip Limited | Administrative & support | 2025 |
| Godivaco Limited | Administrative & support | 2018 |
| Goel Realty Limited | Real estate | 2025 |
| Gofit Sportswear Ltd | Wholesale & retail | 2021 |
| Gogarty Consult Limited | Professional & scientific | 2004 |
| GOL Elite Coaching Limited | Education | 2021 |
| Goldcrust Consulting Ltd | Information & communication | 2014 |
| Golden Eagle Removals Ltd | Transport & logistics | 2020 |
| Golden Frog Services Limited | Transport & logistics | 2024 |
| Golden Scale Investments Limited | Real estate | 2017 |
| Golding Real Estate Limited | Real estate | 2017 |
| Goldstar Fish and Prawns Limited | Wholesale & retail | 2018 |
| Golf Enterprises Ltd | Arts & recreation | 2024 |
| Golf Entertainments Limited | Arts & recreation | 2016 |
| Golf Principles Ltd | Wholesale & retail | 2007 |
| Golledge Electronics Limited | Wholesale & retail | 1990 |
| Golshtech Limited | Information & communication | 2024 |
| Good JOB Home Improvements Ltd | Construction | 2015 |
| Goodall Barnard Holdings Limited | Real estate | 1984 |
| Goodco Limited | Professional & scientific | 2022 |
| Goodwins Greetings Limited | Wholesale & retail | 2013 |
| Goodwood Designs Limited | Extraterritorial | 2000 |
| Gordian Strapping Limited | Manufacturing | 1937 |
| Gordon Brothers Logistics Ltd | Transport & logistics | 2026 |
| Goresolve Limited | Information & communication | 2026 |
| GOS Consulting Ltd | Professional & scientific | 2014 |
| Gosia Fitness Coaching Ltd | Education | 2026 |
| Governancelab Limited | Professional & scientific | 2024 |
| Gowans Holding Company Ltd | Financial services | 2025 |
| Gowin Accountants Limited | Professional & scientific | 2023 |
| GPT Build Limited | Construction | 2019 |
| GPY Speedshop Ltd | Wholesale & retail | 2012 |
| GR Cars Ltd | Transport & logistics | 2004 |
| GR8 Goods Ltd | Wholesale & retail | 2022 |
| Grace Haven Ventures Ltd | Real estate | 2026 |
| Gracebow Aviation Limited | Manufacturing | 2024 |
| Grade Facilities Limited | Administrative & support | 2022 |
| Grand Clean Ltd | Administrative & support | 2024 |
| Grandir UK Limited | Education | 2016 |
| Grandison Limited | Real estate | 2021 |
| Grant Build Ltd | Construction | 2025 |
| Grant Property Developments Limited | Construction | 1998 |
| Grantleys Limited | Wholesale & retail | 2006 |
| Gravity Labs Ltd | Manufacturing | 2020 |
| Grazia Geppetti Ltd | Health & social care | 2023 |
| GRB Aviation Ltd | Professional & scientific | 2011 |
| GRC Computers Ltd | Other services | 2024 |
| Greeff Investments Ltd | Financial services | 2025 |
| Green Cars Hampshire Ltd | Transport & logistics | 2025 |
| Green DEW Styles Ltd. | Professional & scientific | 2020 |
| Green INK Services Limited | Professional & scientific | 2025 |
| Green Kitting Services Limited | Wholesale & retail | 2022 |
| Green Leaf Trees Ltd | Agriculture & fishing | 2018 |
| Green Life Solutions Ltd | Wholesale & retail | 2026 |
| Green Light Hire Limited | Administrative & support | 2021 |
| Green on Green (South) Limited | Real estate | 2017 |
| Green on Green Limited | Real estate | 2008 |
| Green Tech International Limited | Wholesale & retail | 2025 |
| Greenborne Joinery Limited | Manufacturing | 2025 |
| Greenelm Properties Limited | Real estate | 1989 |
| Greenfield Pharmaceuticals Limited | Manufacturing | 1970 |
| Greenhouse Mechanical and Electrical Building Services Ltd | Construction | 2021 |
| Greenleader Limited | Professional & scientific | 1990 |
| Greenleigh Care Home Limited | Health & social care | 2013 |
| Greenscaping Limited | Professional & scientific | 2019 |
| Greensleeves Media Limited | Hospitality | 2020 |
| Greenwave Property Limited | Real estate | 2025 |
| Gres Digital Ltd | Information & communication | 2025 |
| Gresford Care Limited | Health & social care | 2017 |
| Greystoke Systems Limited | Information & communication | 1995 |
| Gridconworks Limited | Construction | 2025 |
| Griffin Lifting Services Limited | Extraterritorial | 2023 |
| Griffin Powell Partners Ltd | Hospitality | 2024 |
| Grill Junction Ltd | Hospitality | 2026 |
| Grocery Giant Limited | Information & communication | 2020 |
| Groove Studio Ltd | Extraterritorial | 2025 |
| Grosvenor Carpets & Rugs Ltd | Wholesale & retail | 1976 |
| Grosvenor House Lymington Limited | Real estate | 2002 |
| Groundcontract Limited | Construction | 2023 |
| Groundstar Ltd | Construction | 2022 |
| Group HQ Developments Limited | Construction | 2026 |
| Growthspots Ltd | Professional & scientific | 2020 |
| GRQ Limited | Construction | 2008 |