| Flight of the Escales | Arts & recreation | 2017 |
| Flora Tea Rooms Limited | Hospitality | 2019 |
| Flowstorm Ltd | Arts & recreation | 2012 |
| Focus Organic Limited | Wholesale & retail | 2000 |
| Folkeast Limited | Arts & recreation | 2011 |
| Folkeast Productions Limited | Arts & recreation | 2012 |
| Food Technical Management Services Ltd | Professional & scientific | 2018 |
| Footsure (UK) Limited | Health & social care | 2013 |
| Ford & Mulley Holdings Ltd | Financial services | 2021 |
| Ford & Mulley Limited | Construction | 2002 |
| Forget-Me-Not (Suffolk) Ltd | Health & social care | 2020 |
| Fourtwentystreet Ltd | Wholesale & retail | 2025 |
| FOX Close Management Company (Laxfield) Limited | Households | 2022 |
| Foxwood Building Services Ltd | Construction | 2014 |
| Foys Food Ltd | Hospitality | 2026 |
| Francis Miosga Consulting Ltd | Professional & scientific | 2012 |
| Freelogics Creations Limited | Wholesale & retail | 2018 |
| Frog and Bone Ltd | Arts & recreation | 2023 |
| Future Proof Consulting Limited | Professional & scientific | 2024 |
| G and C Homes Limited | Construction | 1992 |
| G Engineering Agri Limited | Extraterritorial | 2022 |
| G Engineering Limited | Manufacturing | 2013 |
| G Tydeman Jewellers Limited | Wholesale & retail | 1995 |
| G&A Fire & Security Ltd | Public administration | 2025 |
| GA Newman Limited | Wholesale & retail | 2002 |
| Gary Downes Plumbing and Heating Services Ltd | Construction | 2023 |
| GB Properties Suffolk Ltd | Real estate | 2023 |
| GB Property East Anglia Ltd | Real estate | 2024 |
| Gecko Shoes Limited | Wholesale & retail | 2013 |
| GEO (Estates) Limited | Construction | 2014 |
| Ginger Rabbit Marketing Limited | Professional & scientific | 2018 |
| Gladwell Trading Limited | Real estate | 2016 |
| Glen Bishop Limited | Administrative & support | 2003 |
| GMB Electrical Limited | Construction | 2014 |
| GMB Homes Limited | Real estate | 2020 |
| Goldstar Fencing and Gates Ltd | Wholesale & retail | 2021 |
| Gothic Farms Limited | Agriculture & fishing | 1991 |
| Graham Francis Coaching & Consultancy Limited | Professional & scientific | 2018 |
| Great Ellingham Dog Meadow Limited | Real estate | 2026 |
| Great Wall 2018 Ltd | Hospitality | 2018 |
| Grebe Island Leisure Limited | Administrative & support | 2005 |
| Green Clean Services Ltd | Administrative & support | 2025 |
| Green Valley Electrical Ltd | Construction | 2019 |
| Green Valley Farm Limited | Administrative & support | 2024 |
| Greenlight Environmental Consultancy Limited | Professional & scientific | 2010 |
| Greenways Consultants Ltd | Administrative & support | 2026 |
| Gro-Rite Horticulture Limited | Wholesale & retail | 2010 |
| Grove House Farm Holdings Limited | Extraterritorial | 2017 |
| Grovewood Estates Limited | Real estate | 2023 |
| Guardianstead Holdings Limited | Financial services | 2026 |
| H a Overton & Sons Limited | Agriculture & fishing | 2021 |
| Halcyon Property Co (Liverpool) Limited(The) | Real estate | 1959 |
| Halesworth Campus | Arts & recreation | 2012 |
| Halesworth Campus Enterprises Limited | Construction | 2020 |
| Halesworth Carpet Centre Limited | Wholesale & retail | 2026 |
| Halesworth Driving School Limited | Education | 2007 |
| Halesworth Grooming Limited | Other services | 2023 |
| Halesworth Print Finishers Limited | Manufacturing | 1989 |
| Halesworth Town Football Club Ltd | Arts & recreation | 2020 |
| Halley Properties Limited | Real estate | 2003 |
| Hammer & Stone Ltd | Construction | 2020 |
| Hansen Contracting and Consultancy Limited | Professional & scientific | 2012 |
| Harleston Jewellers Limited | Wholesale & retail | 2016 |
| Haysom Limited | Real estate | 2024 |
| HB Medical Ltd | Health & social care | 2009 |
| Heat Tech Ltd | Construction | 2024 |
| Hedonist Limited | Professional & scientific | 1998 |
| Hellendoorn Healthcare Limited | Health & social care | 2006 |
| Hellendoorn Homes Limited | Real estate | 2014 |
| Helmer and Co Ltd | Hospitality | 2026 |
| Henmax Energy Limited | Professional & scientific | 2023 |
| Herpetofauna Consultants International Limited | Administrative & support | 1997 |
| Herrco Cosmetics Limited | Manufacturing | 2009 |
| Herrmann + Herrmann Limited | Manufacturing | 2012 |
| Hetty's Little Copy Shop Limited | Manufacturing | 2018 |
| High Tide (Southwold) Limited | Wholesale & retail | 2017 |
| Highfield Farm Contracting Limited | Agriculture & fishing | 2018 |
| Hill House Investments Limited | Real estate | 2011 |
| Hillcrest Vehicle Solutions Limited | Wholesale & retail | 2015 |
| Hillfairs Farmers Limited | Agriculture & fishing | 1979 |
| Hillfarm Oils Limited | Manufacturing | 2001 |
| Hirsel Limited | Construction | 2010 |
| HOF Engineering Limited | Professional & scientific | 2023 |
| Hogg Lane Management Company (Ilketshall) Limited | Households | 2026 |
| Holly Hambling Photography Limited | Professional & scientific | 2024 |
| Holly Tree Holidays Limited | Hospitality | 2004 |
| Holmes Glazing Ltd | Construction | 2011 |
| Holmes Lettings (Suffolk) Limited | Real estate | 2025 |
| Holton Hall Park Limited | Hospitality | 1981 |
| Holton Pits Community Interest Company | Arts & recreation | 2023 |
| Holton Road Campsite Ltd | Hospitality | 2018 |
| Holton Road Garden Centre Limited | Wholesale & retail | 2010 |
| Holy Oak Farm Limited | Agriculture & fishing | 2018 |
| Hopstorm Industries Ltd | Hospitality | 2023 |
| Horizon Architectural and Design Limited | Professional & scientific | 2025 |
| Howard Smith Properties Limited | Real estate | 1961 |
| Hurlstone More Search Limited | Administrative & support | 2002 |
| Hurren Agronomy Limited | Agriculture & fishing | 2008 |
| Hurstlea Power and Lighting Limited | Construction | 2016 |
| Huus Living Limited | Wholesale & retail | 2024 |