| Gents by K-Hams Ltd | Other services | 2026 |
| George Telling Ltd | Information & communication | 2020 |
| Georgiou Acquisitions Limited | Real estate | 2020 |
| GFF Holdings Limited | Professional & scientific | 2018 |
| GHG Software Developments Limited | Information & communication | 1997 |
| GIA Property Management Ltd | Other services | 2022 |
| GIF Productions Limited | Information & communication | 2016 |
| Giga Development Management Ltd | Construction | 2020 |
| Gilbert Project Services Limited | Financial services | 2011 |
| Giltbrook Local Store Limited | Wholesale & retail | 2025 |
| Ginger Marketing Limited | Administrative & support | 2010 |
| Gingerbread Aesthetic Limited | Health & social care | 2026 |
| Gingerprint Limited | Professional & scientific | 2006 |
| Ginkgo-Co LLP | | 2025 |
| Gins Limited | Financial services | 2007 |
| Glassett Electrical Ltd | Construction | 2024 |
| Glaze & Glow Ltd | Wholesale & retail | 2026 |
| Glenfield House Limited | Construction | 2017 |
| Global APV (Hire) Limited | Administrative & support | 2022 |
| Global APV Limited | Wholesale & retail | 2022 |
| Global Halal (Holdings) Limited | Financial services | 2013 |
| Global Halal (Retail) Limited | Wholesale & retail | 2013 |
| Global Halal Ltd | Administrative & support | 2016 |
| Global Risk Insights GRI Limited | Information & communication | 2022 |
| Globexpert Fundraising Ltd | Administrative & support | 2021 |
| Globexpert Ltd. | Administrative & support | 2016 |
| Glowar Ltd | Professional & scientific | 2022 |
| GLP Group Services Ltd | Construction | 2023 |
| GM Higson Ltd | Professional & scientific | 2016 |
| GMD People Holdings Limited | Professional & scientific | 2019 |
| GMD People Limited | Professional & scientific | 2001 |
| Go Motorsport Management LLP | | 2015 |
| Gofindmehub Ltd | Information & communication | 2024 |
| Gold Dust Films Limited | Information & communication | 2020 |
| Golden TOW Ltd | Other services | 2026 |
| Goldenhour TAN Ltd | Other services | 2026 |
| Golf Retail Enterprises Ltd | Wholesale & retail | 2023 |
| GOM Property Ltd | Real estate | 2025 |
| Good Eats Aspley Ltd | Hospitality | 2019 |
| Good Eats at ELY Limited | Hospitality | 2018 |
| Good Eats Group Ltd | Hospitality | 2022 |
| Good Eats Hemel Hempstead Limited | Hospitality | 2018 |
| Good Eats Hemel Ltd | Hospitality | 2018 |
| Good Reasons Software Services Limited | Information & communication | 2014 |
| Gordon Law Limited | Professional & scientific | 2012 |
| Gourmet Connect Limited | Wholesale & retail | 1998 |
| Govando Services Ltd | Information & communication | 2020 |
| GR & JE Property’S Ltd | Real estate | 2020 |
| Gr-Analysis Limited | Professional & scientific | 2021 |
| Grace and Groves Limited | Administrative & support | 2024 |
| Grace Family & Associates Ltd | Professional & scientific | 2025 |
| Grad Trans Limited | Transport & logistics | 2019 |
| Graduate Study Options Ltd | Education | 2009 |
| Graft Media Ltd | Professional & scientific | 2024 |
| Grafters Landscape Maintenance Ltd | Administrative & support | 2013 |
| Grafton Spa & Wellness Ltd | Other services | 2015 |
| Graham Bellman Consulting Limited | Professional & scientific | 2021 |
| Grand Prix Racegear Limited | Wholesale & retail | 2009 |
| Grand Prix Drivers Club Limited | Other services | 2024 |
| Grand Prix Racewear Limited | Professional & scientific | 2009 |
| Grande Cuisine Limited | Wholesale & retail | 2013 |
| Graphic Novel Limited | Professional & scientific | 2024 |
| Graphics Art Limited | Arts & recreation | 2025 |
| Grapple Worlds Ltd | Arts & recreation | 2025 |
| Great Weston Races | Arts & recreation | 2025 |
| Greater London Paving Ltd | Construction | 2014 |
| Green Acres Livery Yard Limited | Agriculture & fishing | 2022 |
| Green Diving Services Ltd | Administrative & support | 2026 |
| Green Holiday Homes Ltd | Real estate | 2020 |
| Green LET Homes Ltd | Real estate | 2026 |
| Green Machine Refill Ltd | Wholesale & retail | 2021 |
| Green Technology Finance Limited | Financial services | 2009 |
| Greenaway Mosaics LLP | | 2007 |
| Greenfield Estate (Smallholding) Ltd | Agriculture & fishing | 2019 |
| Greenroom Academy Ltd | Education | 2026 |
| Greyspace Performance Limited | Arts & recreation | 2019 |
| Greystone GT Ltd | Arts & recreation | 2016 |
| Gritt Engineering Limited | Professional & scientific | 2014 |
| Grow Blanks UK Limited | Manufacturing | 2022 |
| Growthdeck DM1 Limited | Financial services | 2019 |
| Growthdeck DM2 Limited | Financial services | 2019 |
| Growthlabs Consultants Limited | Other services | 2016 |
| GRP IT Limited | Information & communication | 2024 |
| GSD Leisure Ltd | Arts & recreation | 2026 |
| Gulestan-E-Kibria Limited | Agriculture & fishing | 2023 |
| Guppy Limited | Professional & scientific | 2024 |
| Guscom Limited | Financial services | 2023 |
| GWE Biogas Holdings Limited | Financial services | 2018 |
| GWE Biogas Ltd | Energy | 2008 |
| GWE Biogas Newco 2 Ltd | Financial services | 2025 |
| Gym Plan-It Limited | Arts & recreation | 2023 |
| H&F Enterprise UK Ltd | Administrative & support | 2004 |
| HA Pubs Ltd | Hospitality | 2023 |
| Hackett Contracts Limited | Construction | 2026 |
| Hagley West Clothing Ltd | Wholesale & retail | 2023 |
| Hagley West Watches Limited | Wholesale & retail | 2016 |
| Halliday Brickwork Limited | Construction | 2021 |
| Hamilton Precision Limited | Manufacturing | 1985 |
| Hanna Hillier Creative Agency Limited | Arts & recreation | 2021 |
| Hanna Hillier Photography Limited | Professional & scientific | 2022 |