| Eastern Rise Management Company Ltd | Households | 2023 |
| Easy Print Scan Ltd | Manufacturing | 2026 |
| Eddy and Browne Electrical Limited | Construction | 2018 |
| Edvantage Ltd | Administrative & support | 2020 |
| Ehealth Systems Ltd | Extraterritorial | 2014 |
| Ekam Health and Wellness Limited | Education | 2024 |
| EKL Developments Limited | Construction | 2019 |
| ELH Haulage Limited | Transport & logistics | 2024 |
| Elite 62 Limited | Professional & scientific | 2020 |
| Elite Edge Virtual Assistants Limited | Administrative & support | 2024 |
| Elite M & C H Limited | Professional & scientific | 2019 |
| Elite M & C Limited | Professional & scientific | 2019 |
| Ellis Meadow Management Company Limited | Administrative & support | 2011 |
| Elmdon Home and Garden Limited | Construction | 2025 |
| Eloise Duffy Limited | Manufacturing | 2011 |
| Embody and Connect CIC | Education | 2026 |
| Empire Clearance and Cleaning Ltd | Wholesale & retail | 2026 |
| Emvirya Trading Ltd | Wholesale & retail | 2020 |
| Energon Group Ltd | Manufacturing | 2025 |
| Engineer Legal Ltd | Information & communication | 2021 |
| Esquire Services Limited | Administrative & support | 2009 |
| ESS Strategies Limited | Extraterritorial | 2020 |
| Esther Beauty Salon Alasunke Ltd | Other services | 2025 |
| Euro Parts Dealer Ltd | Wholesale & retail | 2013 |
| Exclusive Pawnbrokers Ltd | Financial services | 2019 |
| Eyestylecornwall Limited | Professional & scientific | 2025 |
| Family Resilience Services CIC | Other services | 2026 |
| Festival Junkie Camper Vans Ltd | Administrative & support | 2022 |
| Fine Drive Autos Ltd | Wholesale & retail | 2025 |
| Fine Homes Cornwall Ltd | Construction | 2022 |
| Fine Homes Developments Ltd | Construction | 2022 |
| Finian Jameson Cullen-Russell Ltd | Extraterritorial | 2025 |
| Fire Safety in Order Limited | Professional & scientific | 2011 |
| Fitpod Cornwall Ltd | Arts & recreation | 2024 |
| FLOW27889 Limited | Hospitality | 2025 |
| Fone Care Cornwall Ltd | Other services | 2020 |
| Fone Case Camborne Limited | Wholesale & retail | 2025 |
| Forerunner Digital Ltd | Information & communication | 2025 |
| Forth Scol Administration Services Ltd | Administrative & support | 2018 |
| Forward EV Limited | Construction | 2023 |
| Freetobeme Limited | Health & social care | 2024 |
| Future Property Lettings Limited | Real estate | 2008 |
| G.B. Homes (SW) Limited | Construction | 2004 |
| Gabriels Foods Limited | Wholesale & retail | 2000 |
| Gallos Electrical Ltd | Construction | 2025 |
| Gambrill Fishing Limited | Agriculture & fishing | 2022 |
| Gamehosting Limited | Information & communication | 2009 |
| Gardner Property Management Cornwall Ltd | Real estate | 2025 |
| GET UP and Glow Ltd | Other services | 2023 |
| Gilbert Brothers Construction Limited | Construction | 2020 |
| Gill Transport Solutions Ltd | Transport & logistics | 2026 |
| Giluva Fintech Ltd | Information & communication | 2025 |
| Ginevan Ltd | Health & social care | 2025 |
| GJW Enterprises Limited | Education | 2013 |
| Gkideas Limited | Wholesale & retail | 2024 |
| Glamp Cornwall Ltd | Hospitality | 2021 |
| Glow-Warm Heating Services Limited | Construction | 1996 |
| GML 1 Ltd | Administrative & support | 2020 |
| Going Places Haulage Ltd | Transport & logistics | 2024 |
| Going Places Removals LLP | | 2016 |
| Goldcrest & Tide Limited | Wholesale & retail | 2026 |
| Golden Pool Ltd | Hospitality | 2022 |
| Goldsworthy Fitness & Wellness Community Hub Ltd | Arts & recreation | 2026 |
| Goraya Trading Ltd | Wholesale & retail | 2023 |
| Graham Frederick Hichens Limited | Extraterritorial | 2025 |
| Grand Massif Adventure Ltd | Administrative & support | 2018 |
| Grass Roots Cornwall Ltd | Construction | 2021 |
| Grayfin Ltd | Construction | 2024 |
| Greatbeth Ltd | Health & social care | 2024 |
| Green Horizon Strategies Ltd | Professional & scientific | 2025 |
| Green-Haven Support Limited | Health & social care | 2015 |
| Greendoor Financial Solutions Ltd | Financial services | 2021 |
| Greenthings (Cornwall) Limited | Wholesale & retail | 2013 |
| Griffitti Ltd | Wholesale & retail | 2015 |
| Grisdale Management Limited | Households | 2024 |
| Grosvenor Pumps Limited | Manufacturing | 1989 |
| Groundscrew Cornwall Limited | Construction | 2025 |
| Gwedhek Properties Ltd | Real estate | 2025 |
| Gwel an Porth Management Company Ltd | Real estate | 2026 |
| Gwithacorp Services Limited | Administrative & support | 2025 |
| Hagi Building Limited | Construction | 2024 |
| Half Wheel Trading Limited | Administrative & support | 2017 |
| Hamilton Worldwide Ltd | Wholesale & retail | 2026 |
| Hanbury Financial Planning Ltd | Financial services | 2019 |
| Hand-Maid Cakes (Cornwall) Ltd | Other services | 2019 |
| Harbour Land and Properties Limited | Professional & scientific | 2020 |
| Harpers Healthcare Ltd | Health & social care | 2024 |
| Hart Estates Cornwall Ltd | Real estate | 2025 |
| Hart Holdings Cornwall Ltd | Real estate | 2022 |
| Harvestaire Ltd | Agriculture & fishing | 2025 |
| Havost Limited | Hospitality | 2020 |
| Hazelbury House Limited | Hospitality | 1992 |
| HB Composite Care Ltd | Manufacturing | 2025 |
| Healthy Habits Academy Community Interest Company | Professional & scientific | 2021 |
| Heard Homes Limited | Construction | 2006 |
| Heart Earth CIC | Education | 2026 |
| Heat Pump Pro Ltd | Construction | 2023 |
| Hello World Labs Ltd | Information & communication | 2026 |
| Helocrew Ltd | Transport & logistics | 2025 |
| Hilldria Ltd | Health & social care | 2022 |