| Grounded Coffee Co Newquay Ltd | Hospitality | 2021 |
| Group Simply Limited | Real estate | 2025 |
| Grow Greener Co-Operative Limited | Agriculture & fishing | 2025 |
| Groweatdo CIC | Hospitality | 2022 |
| Grown International LLP | | 2026 |
| Grutto.Com Limited | Wholesale & retail | 2018 |
| Gryphon Services Limited | Information & communication | 2024 |
| GS Equestrian Limited | Extraterritorial | 2022 |
| GS Estates Exeter Ltd | Real estate | 2025 |
| GS Holdco Limited | Financial services | 2019 |
| GS Infotech System Ltd | Information & communication | 2024 |
| GS Plant & Building Services Limited | Construction | 2023 |
| GS Workwear Limited | Wholesale & retail | 2022 |
| Gsii Bent Spur Solar Farm Limited | Energy | 2016 |
| Gsii Dorset Solar Farm Limited | Energy | 2014 |
| Gsii Infra 3 UK Solar Ltd | Financial services | 2014 |
| GSO Ventures Limited | Information & communication | 2026 |
| GT Advisors Limited | Administrative & support | 2012 |
| Guardian Security (South West) Limited | Administrative & support | 2003 |
| Gubbins Pet Supplies Ltd | Wholesale & retail | 2026 |
| Gugima Limited | Information & communication | 2025 |
| Guildhall Place Ltd | Real estate | 2020 |
| Gulliford HI FI Limited | Wholesale & retail | 1996 |
| Gumby Holdings Limited | Arts & recreation | 2015 |
| Gumdelivery Ltd | Transport & logistics | 2025 |
| Gumis Ltd | Transport & logistics | 2022 |
| Gumushane 29 Ltd | Hospitality | 2025 |
| Gunwharf Holdings Limited | Financial services | 2016 |
| Guruconsulting Services Ltd | Construction | 2017 |
| Gusto Marketing Limited | Professional & scientific | 2014 |
| Guthrie Pemburton & Co Limited | Professional & scientific | 1993 |
| Guyat Property Ltd | Real estate | 2026 |
| Guytex Limited | Construction | 2021 |
| Guzzl UK Ltd | Wholesale & retail | 2017 |
| GV5 Ltd | Professional & scientific | 2019 |
| Gvcareers Holdings Limited | Financial services | 2019 |
| Gvcareers Limited | Administrative & support | 2018 |
| Gvep Hepworth Limited | Construction | 2019 |
| Gvep Land Limited | Construction | 2018 |
| Gvpactivity Limited | Professional & scientific | 2013 |
| GW Plant Ltd | Construction | 2019 |
| GW Plastering & Rendering Ltd | Construction | 2025 |
| GWK Groundworks and Civil Engineering Ltd | Construction | 2023 |
| GWN Site Services Ltd | Construction | 2015 |
| Gwok Limited | Hospitality | 2023 |
| Gym OIL Ltd | Wholesale & retail | 2018 |
| Gyms Devon Ltd | Arts & recreation | 2021 |
| H & a Events Ltd | Arts & recreation | 2024 |
| H & B (SW) Ltd | Wholesale & retail | 2023 |
| H & H Prestige Homes Limited | Construction | 2003 |
| H & P Admin Services Ltd | Professional & scientific | 2016 |
| H & S Transport Ltd | Transport & logistics | 2011 |
| H Gavin Limited | Financial services | 2022 |
| H K Physio Limited | Health & social care | 2010 |
| H R Jasper & SON (Holdings) Limited | Professional & scientific | 2011 |
| H Watkinson Ltd | Health & social care | 2014 |
| H&B Marine Consultants Ltd | Professional & scientific | 2026 |
| H&M Digital Ltd | Information & communication | 2025 |
| H&O Property Services Limited | Real estate | 2021 |
| H&W Automotive Ltd | Wholesale & retail | 2026 |
| H-Care Iwanicka Limited | Health & social care | 2015 |
| H.B. Evelyo Ltd. | Manufacturing | 2017 |
| H.I Building Company Limited | Construction | 2021 |
| H.I Management Company Ltd | Administrative & support | 2025 |
| H.V.P. Security Shutters Limited | Manufacturing | 1978 |
| H2E-AERO Services Limited | Transport & logistics | 2025 |
| H2O Safe Ltd | Manufacturing | 2024 |
| HA HA Images Ltd | Professional & scientific | 2015 |
| Haarp Motors Ltd | Wholesale & retail | 2023 |
| Habitant Property Management Ltd | Real estate | 2012 |
| Hace Enterprise Limited | Financial services | 2023 |
| Hack Publishing Ltd | Information & communication | 2020 |
| Haddon Properties Ltd | Real estate | 2025 |
| Haddon Williams Ltd | Health & social care | 2003 |
| Hafiz Bakare Limited | Health & social care | 2024 |
| Haines Consultancy Group Limited | Professional & scientific | 2026 |
| Hair Pigmentation Perfection Ltd | Other services | 2019 |
| Hair Revive Southwest Ltd | Other services | 2026 |
| Hajar Travels (UK) Ltd | Administrative & support | 2025 |
| Halco Products Ltd | Wholesale & retail | 2002 |
| Haldog Ltd | Health & social care | 2019 |
| Haldon Forest Holiday Park Ltd | Extraterritorial | 2019 |
| Haldon Precision Systems Ltd | Manufacturing | 2023 |
| Haldon Property Limited | Real estate | 2018 |
| Haldon Studios Limited | Information & communication | 2011 |
| Haleydays Holiday Ltd | Hospitality | 2025 |
| Halfpint Quarterpint Limited | Hospitality | 2020 |
| Hallaze Farm Amenity Areas Management Company Limited | Households | 2012 |
| Hallbaron Limited | Construction | 1982 |
| Halloway Homes Investments Limited | Real estate | 2019 |
| Hallucination Limited | Arts & recreation | 2017 |
| Halo Hygiene Limited | Administrative & support | 2025 |
| Halwell Business Park Limited | Real estate | 2021 |
| Halwill Manor Limited | Health & social care | 2023 |
| HAM Electrical Ltd | Construction | 2022 |
| HAM Hill Holdings Limited | Hospitality | 2015 |
| Hamble Building Services Ltd | Construction | 2011 |
| Hambly Freeman Limited | Information & communication | 2014 |
| Hambrough Properties Limited | Real estate | 2025 |
| Hamilton Estates (South West) Limited | Construction | 2017 |