| Fifty Two Taverns Ltd | Hospitality | 2004 |
| Fine Homecare Ltd. | Other services | 2017 |
| Finlay Oak Property Management Ltd | Real estate | 2022 |
| Flyonix Limited | Construction | 2012 |
| Foodweb Farmers CIC | Agriculture & fishing | 2021 |
| FOR the Health of Skin Limited | Health & social care | 2024 |
| Forest Crafts (Devon) Limited | Manufacturing | 2001 |
| Forrester Fleetwood Limited | Wholesale & retail | 2023 |
| Fortune and Flavour Limited | Wholesale & retail | 2024 |
| Founders Clubhouse Limited | Wholesale & retail | 2024 |
| FOX Carpets and Flooring Limited | Construction | 2019 |
| Freedman Solutions Ltd | Construction | 2026 |
| Frontier Litigation Limited | Professional & scientific | 2026 |
| Future Bodies Gym & Health Club Ltd | Arts & recreation | 2017 |
| Gainsborough Group Limited | Administrative & support | 2017 |
| Garden Capital Limited | Professional & scientific | 2009 |
| GD Accountancy Limited | Professional & scientific | 2018 |
| Geostair Homes Ltd | Real estate | 2019 |
| Geostair Ltd | Real estate | 2019 |
| Geraint Evans Limited | Information & communication | 2006 |
| GKA Associates Limited | Financial services | 2009 |
| Glen Watts Limited | Manufacturing | 2003 |
| Glulam Beams Limited | Extraterritorial | 2005 |
| Goodway Ventures Limited | Information & communication | 2021 |
| Gooseford Dairy Limited | Wholesale & retail | 2022 |
| Graham Hospitality Ltd | Hospitality | 2021 |
| Graham K Stevens Limited | Professional & scientific | 2016 |
| Graniteoak Regeneration Ltd | Professional & scientific | 2025 |
| Greenaways Service and MOT Centre Limited | Wholesale & retail | 2002 |
| Greenspace Designs Limited | Manufacturing | 2001 |
| Grey & Family Ltd | Financial services | 2021 |
| Griphero (Holdings) Limited | Financial services | 2020 |
| Griphero Limited | Manufacturing | 2017 |
| Growing OUR Future | Agriculture & fishing | 2009 |
| Growth Guides Limited | Professional & scientific | 2022 |
| Gubbins Productions Ltd | Information & communication | 1999 |
| H-Town Events Ltd | Arts & recreation | 2021 |
| H. and B. Howes (Wellingborough) Limited | Households | 1949 |
| H2OUTCOMES Ltd | Water & waste | 2018 |
| Hallwood Developments (Devon) Ltd | Construction | 2021 |
| Hameldown Haulage Ltd | Transport & logistics | 2025 |
| Hammonds Farm Services Ltd | Professional & scientific | 2024 |
| Hancock S Garage Limited | Wholesale & retail | 2003 |
| Hansea Homes Limited | Real estate | 2016 |
| Harbour Talent Limited | Administrative & support | 2026 |
| Harry Geering Limited | Real estate | 2022 |
| Hartley Dental Practice Limited | Health & social care | 2011 |
| Harvest Workers' Co-Op Ltd | Wholesale & retail | 2017 |
| Hatherleigh Fish Bar Limited | Hospitality | 2023 |
| Hatherleigh Motor Services Ltd | Wholesale & retail | 2017 |
| Hatherleigh Town Hall Management Company Limited | Households | 2011 |
| Hawk on the Wild Side Limited | Arts & recreation | 2011 |
| Hawley Trading Limited | Professional & scientific | 2016 |
| Haywire Sound Ltd | Information & communication | 2012 |
| HE Infusion UK Ltd | Wholesale & retail | 2022 |
| Heistercamp Partnership LLP | | 2006 |
| Hennings Property Centres Limited | Real estate | 1990 |
| Herbs & Spices Ltd | Wholesale & retail | 2010 |
| HHB Consulting Ltd | Public administration | 2017 |
| Hideaway Camping Limited | Hospitality | 2015 |
| Highwaymans Grove (Sourton) Management Company Limited | Households | 2020 |
| Hilltop Rentals Limited | Real estate | 2025 |
| Hinode Sales Ltd | Wholesale & retail | 2023 |
| Hmlr Ltd | Construction | 2006 |
| Hodgson-Kearley Ltd | Wholesale & retail | 2021 |
| HOF Holdings Ltd | Professional & scientific | 2017 |
| Holistic Flow Ltd | Health & social care | 2024 |
| Home Run Properties Limited | Hospitality | 2001 |
| Honeydown Domes Ltd | Hospitality | 2014 |
| Hooe's Yurts Ltd | Administrative & support | 2023 |
| Hookways (Services) Ltd | Agriculture & fishing | 2025 |
| Hoops Media Limited | Professional & scientific | 2010 |
| Hosken Parks Limited | Other services | 2010 |
| Hotfood YC Limited | Hospitality | 2020 |
| Hughes Plumbing and Heating (Okehampton) Ltd | Construction | 2025 |
| Hutton Moor END Ltd | Professional & scientific | 2022 |
| Hypnotic Entertainment Limited | Arts & recreation | 2003 |
| IAS Enviro Limited | Extraterritorial | 2008 |
| IAS Property Limited | Administrative & support | 2007 |
| Iddie Limited | Information & communication | 2008 |
| Ideal Lifts Limited | Construction | 2003 |
| Ideal Lifts Service Limited | Manufacturing | 2006 |
| Imagemakers Design and Consultancy Limited | Arts & recreation | 2009 |
| Immersion 11 Limited | Professional & scientific | 2011 |
| Immersion in the Community CIC | Education | 2022 |
| Impact Abound Limited | Administrative & support | 2015 |
| Impossible Holdings Ltd | Wholesale & retail | 2025 |
| Independent Surveys (South West) Limited | Professional & scientific | 2002 |
| Independent Tyre Distributors Network Limited | Other services | 1996 |
| Infinite Choice Limited | Financial services | 2004 |
| Infinite Choice Media Limited | Information & communication | 2017 |
| Info-Plane Limited | Information & communication | 2014 |
| Inge Consulting Ltd | Professional & scientific | 2018 |
| Innolivio Ltd | Energy | 2013 |
| Inspire Inns Limited | Hospitality | 2019 |
| Inspired Underwriting Limited | Financial services | 2007 |
| Integrated Software Systems Limited | Information & communication | 2018 |
| Intergrate Ltd | Agriculture & fishing | 2005 |
| Interlink Marine Engineering Services Ltd | Construction | 2021 |
| Internexions Limited | Professional & scientific | 2000 |