| Gipping Valley Meats Ltd | Wholesale & retail | 2010 |
| Girlfridays (Sudbury) Limited | Administrative & support | 2016 |
| Gislingham Store Limited | Wholesale & retail | 2025 |
| GJK Electrical Services Limited | Construction | 2017 |
| GJN Catering Ltd | Hospitality | 2022 |
| GJN Holdings Ltd | Real estate | 2023 |
| GKM Financial Services Limited | Financial services | 2010 |
| Glebe Farm (Killinghall) Management Company Limited | Households | 2019 |
| Glemsford Grill Ltd | Hospitality | 2023 |
| Global Electronic Technology Systems Limited | Information & communication | 2026 |
| Global Food Consultant Limited | Wholesale & retail | 2024 |
| Global Nomad Services Limited | Other services | 2024 |
| Globe Yard Management Ltd | Real estate | 2009 |
| GLUE2020 Ltd | Professional & scientific | 2009 |
| Gluten Free Italia Limited | Wholesale & retail | 2015 |
| Glynwood Court Management Ltd | Households | 1993 |
| GMB Holdings Ltd. | Financial services | 2017 |
| GMS IT Solutions Limited | Information & communication | 2014 |
| Go Live Vortex Limited | Information & communication | 2012 |
| Going Under Film Limited | Information & communication | 2026 |
| Gold Teal and Green Ltd | Wholesale & retail | 2020 |
| Golden Birch Ltd | Information & communication | 2023 |
| Goldhosting Limited | Information & communication | 2025 |
| Gostart Community Transport Ltd | Transport & logistics | 2011 |
| Governance (Suffolk) Limited | Professional & scientific | 2015 |
| Governance and Compliance Interim Resources Ltd | Public administration | 2025 |
| Gpjsims Limited | Financial services | 2015 |
| GPQ Property Investments Limited | Real estate | 2023 |
| Grab Property Management Ltd | Real estate | 2021 |
| Gracechurch Financial Services Limited | Financial services | 2004 |
| Grantham House (Surbiton) Residents Association Limited(The) | Households | 1977 |
| Gray Car Productions Limited | Information & communication | 2007 |
| Great Change Coaching Ltd | Education | 2022 |
| Green Barn Classics Ltd | Wholesale & retail | 2025 |
| Green Growth Limited | Professional & scientific | 2024 |
| Greenacre Properties (Clare) Limited | Professional & scientific | 1998 |
| Greens Reptiles and Rescues Ltd | Wholesale & retail | 2026 |
| Greenwill Technologies Ltd | Information & communication | 2011 |
| Greg Dykes Ltd | Construction | 2013 |
| Greig & Mills Ltd | Construction | 2010 |
| Greyfriars Court Property Management Limited | Households | 2012 |
| Greys Hall Fabrication Limited | Manufacturing | 2008 |
| Greystone Interiors Limited | Professional & scientific | 2012 |
| Grice Court Freehold Limited | Households | 2010 |
| Griffin Farming Ltd | Agriculture & fishing | 2015 |
| Griffiths-Ware Limited | Real estate | 2021 |
| Grigor Transport Ltd | Transport & logistics | 2018 |
| Grimsy Pro Builds Ltd | Construction | 2022 |
| Gripsafe Ltd | Construction | 2025 |
| Growler Inns Limited | Wholesale & retail | 2013 |
| GW Management & Consultation Ltd. | Professional & scientific | 2020 |
| GW Management&Consultationltd Limited | Construction | 2025 |
| GWC Metal Limited | Manufacturing | 2020 |
| H Byham & SON Limited | Wholesale & retail | 1973 |
| H Dowsett Ltd | Construction | 2023 |
| H E Mayfield Enterprises Limited | Construction | 2015 |
| H. E. Dennis Farms Limited | Agriculture & fishing | 2007 |
| H.B.S. Electronics Limited | Manufacturing | 2004 |
| H.T. Slater Limited | Construction | 1974 |
| Habcert Ltd | Professional & scientific | 2023 |
| Hack Nutrition Group Ltd | Manufacturing | 2025 |
| Hair Couture Limited | Other services | 2011 |
| Halcyon Projects Ltd | Administrative & support | 2024 |
| Half Moon Yard Management Limited | Households | 1988 |
| Hall Close Residents Management Company Limited | Households | 2018 |
| Hall Street Tandoori Ltd | Hospitality | 2026 |
| Hamilton International Training Academy Ltd | Education | 2023 |
| Handling Wise Ltd | Health & social care | 2024 |
| Handmade in Hundon Limited | Hospitality | 2002 |
| Handmade Sofas and Chairs Limited | Manufacturing | 2023 |
| Hands on Resources Ltd | Education | 2011 |
| Hangers Boutique Ltd | Wholesale & retail | 2021 |
| Happe Contracts Limited | Construction | 2014 |
| Happy Garden Products Company Limited | Wholesale & retail | 2019 |
| Harlan Mill Ltd | Information & communication | 2025 |
| Harman Land and Homes Limited | Real estate | 2025 |
| Harmony Plants Ltd | Wholesale & retail | 2011 |
| Harp Close Meadow (Sudbury) Management Company Limited | Real estate | 2015 |
| Harpur Garden Images Limited | Professional & scientific | 2010 |
| Harris & Harris Books Limited | Wholesale & retail | 2025 |
| Harry S. LEE Limited | Wholesale & retail | 1981 |
| Harrys Software Solutions Ltd | Information & communication | 2024 |
| Hart Water Ltd | Wholesale & retail | 2013 |
| Hartland Stock Limited | Agriculture & fishing | 2021 |
| Hartshield Limited | Real estate | 2013 |
| Hartstone Development Limited | Financial services | 2018 |
| Harvey House Residents Ltd | Real estate | 2020 |
| Hatsoph Hospitality Ltd | Hospitality | 2013 |
| Haughley Homes Limited | Real estate | 2021 |
| Haverhill Courier Services Limited | Transport & logistics | 2024 |
| Haverhill Mould & Tooling Ltd | Manufacturing | 2004 |
| Hawkspur Ltd | Professional & scientific | 2012 |
| HAY Wain Homes Limited | Construction | 2023 |
| Haymarket Agri Plant Ltd | Agriculture & fishing | 2024 |
| HBS Electronics (Holdings) Limited | Financial services | 2013 |
| HBS Group Trustee Limited | Other services | 2023 |
| HC Consultancy Limited | Information & communication | 2015 |
| HCL Property Development Ltd | Real estate | 2026 |
| Heads UP Medical Solutions Ltd | Manufacturing | 2024 |
| Headset Services Ltd. | Other services | 1994 |