| Gilded Star Limited | Administrative & support | 2022 |
| Glas Parc Ltd | Real estate | 2025 |
| Goldgrowsgreen Ltd | Wholesale & retail | 2022 |
| Gotoguy Ltd | Construction | 2022 |
| Grail Guard Ltd | Wholesale & retail | 2023 |
| Grand Lodge of Freemasonry for MEN and Women Ltd | Professional & scientific | 2012 |
| Green Angel Limited | Manufacturing | 1998 |
| Gregory Groundworks Limited | Construction | 1999 |
| Gregory Hawk Service Limited | Real estate | 2025 |
| Growest Limited | Agriculture & fishing | 2011 |
| GTG Holdings Limited | Financial services | 2023 |
| GTG Pet Foods Limited | Manufacturing | 2023 |
| Guild of Professional English Butlers Limited | Other services | 2000 |
| H & H Investment Properties Ltd. | Real estate | 2017 |
| Haag Limited | Agriculture & fishing | 1964 |
| Haag's Farms Limited | Agriculture & fishing | 2025 |
| Haag's Norfolk & Suffolk Farms Limited | Agriculture & fishing | 1956 |
| Hadleigh Hall Ltd | Households | 2003 |
| Harperwells Ltd | Wholesale & retail | 2006 |
| Harrison Edge Limited | Real estate | 2008 |
| Harrys Houses Ltd | Real estate | 2024 |
| Hartismere Family of Schools | Education | 2010 |
| Havers Development Ltd. | Education | 1998 |
| Hawk Accounts Ltd | Professional & scientific | 2023 |
| HGP Property Ltd | Real estate | 2019 |
| High Performance Rigging Limited | Arts & recreation | 2017 |
| Hill Cottage Suffolk Limited | Hospitality | 2025 |
| HMPROPERTY123 Limited | Real estate | 2025 |
| Homefront Windows Ltd | Construction | 2021 |
| Honey Badger Marketing Ltd | Professional & scientific | 2022 |
| Horham Dairy and Care Farm CIC | Agriculture & fishing | 2018 |
| Horizons Property Services Ltd | Real estate | 2024 |
| Howard Property Group Ltd | Real estate | 2017 |
| Hoxne Deli and Tea Rooms Ltd | Hospitality | 2017 |
| Hoxne Holiday Homes Limited | Professional & scientific | 1996 |
| Hurley Dog Walking Limited | Other services | 2024 |
| Hybrid Tune Motorsports Ltd | Wholesale & retail | 2022 |
| IAN Winter Consultancy Ltd | Professional & scientific | 2013 |
| Induserv Ltd. | Administrative & support | 2005 |
| Infinity Site Solutions Ltd | Construction | 2025 |
| Insightful Worming Ltd | Professional & scientific | 2018 |
| Inspire Beyond Limited | Professional & scientific | 2005 |
| J a J Smith & SON Limited | Transport & logistics | 2015 |
| J H Idris Ltd | Construction | 2014 |
| J H Vaudrey & SON (E.A.) Limited | Agriculture & fishing | 2005 |
| J H Vaudrey & SON (Farms) Ltd | Agriculture & fishing | 2017 |
| J&J Atkinson Provisions Ltd | Hospitality | 2015 |
| J.L.O. (1984) Limited | Information & communication | 1984 |
| J.P. Morgan Trust Investment Company Limited(The) | Financial services | 1968 |
| Jack and Bowl Limited | Wholesale & retail | 2022 |
| Jacqueline Forsyth Ltd | Administrative & support | 2023 |
| JAM Internet Marketing Limited | Administrative & support | 2014 |
| Jamnam Ltd | Real estate | 2022 |
| Jarhed Ltd | Information & communication | 2026 |
| Jark Solutions Ltd | Professional & scientific | 2021 |
| Jazzi Marketing Limited | Administrative & support | 2011 |
| Jennings Way Management Company Limited | Households | 2013 |
| JH Vaudrey & SON Ltd | Construction | 2018 |
| JLD Support Services Ltd | Professional & scientific | 2026 |
| JLW Electrical Services Ltd | Construction | 2015 |
| JM Forestry Ltd | Agriculture & fishing | 2022 |
| John Chadder & Associates Limited | Real estate | 2002 |
| Jolly Gritting Limited | Administrative & support | 2022 |
| Jonjoe Limited | Administrative & support | 2016 |
| Joseph Day Holdings Ltd | Financial services | 2018 |
| JSB Interim Ltd | Hospitality | 2007 |
| Jungle Cubs & Jungle Giants CIC | Health & social care | 2017 |
| JW 26 Limited | Health & social care | 2012 |
| KAI Liebetanz Ltd | Professional & scientific | 2025 |
| Kalessin Consulting Ltd. | Information & communication | 2005 |
| KDJ Property Investments Limited | Real estate | 2017 |
| Kedala Limited | Administrative & support | 2010 |
| KH Farms Limited | Agriculture & fishing | 2016 |
| Kings Farm Foods Limited | Manufacturing | 2015 |
| Kings Farm Forestries Ltd | Agriculture & fishing | 2023 |
| Kirk Services Ltd | Wholesale & retail | 2016 |
| Kitchener Communications Ltd | Professional & scientific | 2018 |
| Kiwi Properties East Anglia Ltd | Real estate | 2025 |
| Ko-An Arts CIC | Arts & recreation | 2011 |
| Kpexp Ltd | Wholesale & retail | 2023 |
| Kult 404 Entertainment Ltd | Hospitality | 2025 |
| Kuura Limited | Wholesale & retail | 2019 |
| L & W Property Ltd | Real estate | 2015 |
| Lampits Farms Limited | Agriculture & fishing | 2005 |
| Langtons Limited | Manufacturing | 1994 |
| Last Properties Limited | Real estate | 2019 |
| Leafprint Ltd | Information & communication | 2019 |
| LEE Suffolk Limited | Hospitality | 2025 |
| Legends (Bars) Ltd | Wholesale & retail | 2020 |
| Life and Sole Ltd | Health & social care | 2015 |
| Lily J'S Hair Studio Ltd | Other services | 2017 |
| Linden Mill Ltd | Information & communication | 2026 |
| Lindsay Flaxmer Ltd | Wholesale & retail | 2003 |
| Ling's Storage Ltd | Transport & logistics | 2020 |
| Lion Technology Consultancy Services Ltd | Information & communication | 2016 |
| Little Hollands Limited | Agriculture & fishing | 2025 |
| Live Property Services Limited | Construction | 2025 |
| Live-Everyday Ltd | Health & social care | 2010 |
| LK Cardiac Physiology Services Ltd | Health & social care | 2025 |
| Location Works Limited | Other services | 2007 |