| Glowing OWL Limited | Professional & scientific | 2024 |
| GMC Home Improvements Ltd | Construction | 2022 |
| Gmdd Holdings Limited | Extraterritorial | 2016 |
| Godspeed MS LLP | | 2013 |
| Godwick Turkeys Limited | Agriculture & fishing | 2022 |
| Golfar and Hughes Limited | Wholesale & retail | 2015 |
| Gooderstone Property Development Company Limited | Construction | 1986 |
| Goodley Farm Services Limited | Agriculture & fishing | 1982 |
| Goodwood Holdings Limited | Financial services | 2014 |
| Gowards Independent Funeral Services Ltd | Other services | 2025 |
| Grange Barns Management Company Ltd | Real estate | 2007 |
| Green Gecko Ltd | Professional & scientific | 2019 |
| Green Life Supplies Ltd | Households | 2017 |
| Greener Journey International Ltd | Professional & scientific | 2023 |
| Greenhouse Properties Norfolk Ltd | Real estate | 2025 |
| Greenway Lane Developments Limited | Construction | 2006 |
| Gresham Farms Limited | Agriculture & fishing | 1955 |
| Grindstore Limited | Wholesale & retail | 2010 |
| Grocott & Murfit Holdings Limited | Financial services | 2024 |
| Grocott & Murfit Limited | Construction | 2010 |
| Grocott & Murfit Property Letting Limited | Real estate | 2018 |
| Grocott & Murfit Topco Limited | Financial services | 2026 |
| Gullwing Properties Limited | Real estate | 2025 |
| GUY Savory and SON Limited | Agriculture & fishing | 1961 |
| H. Banham (Holdings) Limited | Professional & scientific | 1956 |
| H. Banham Limited | Wholesale & retail | 2004 |
| Halo ICT Ltd | Wholesale & retail | 2025 |
| Hangar 1 Limited | Administrative & support | 2009 |
| Happisburgh Estates (Caravan Park) Ltd | Hospitality | 2003 |
| Hare Ventures Limited | Real estate | 2026 |
| Harry Felton and Company Limited | Construction | 2016 |
| Hawk and OWL Trust | Other services | 1996 |
| Hawthorn Capital Limited | Real estate | 2026 |
| Hayes + Storr Limited | Professional & scientific | 2012 |
| Hayley Wright Ltd | Real estate | 2010 |
| Hazelwood Pictures Ltd | Information & communication | 2017 |
| Heath Barn Ltd | Real estate | 2014 |
| Heath Farm Pigs (Colkirk) Limited | Agriculture & fishing | 1972 |
| Hedony Associates Ltd | Wholesale & retail | 2018 |
| Heirloom Creative Limited | Wholesale & retail | 2014 |
| Hempland Close Management Company Limited | Households | 2003 |
| Henry Empire Limited | Professional & scientific | 2009 |
| Henville Limited | Other services | 2020 |
| Heyhoe Electrical Limited | Construction | 2022 |
| High Barns Management Company Limited | Administrative & support | 2006 |
| Hill House Leisure Limited | Arts & recreation | 2006 |
| Hindringham Design Ltd | Professional & scientific | 2022 |
| Holbrook Consulting Limited | Professional & scientific | 2002 |
| Holiday Homes and Leisure Services Limited | Hospitality | 2000 |
| Holiday Homes Norfolk Limited | Hospitality | 2025 |
| Holt Antiques & Interiors Limited | Real estate | 2014 |
| Holt Fish Bar Limited | Hospitality | 2011 |
| Holt Road Car Sales Limited | Wholesale & retail | 2025 |
| Holt Rugby Club Property Limited | Arts & recreation | 1967 |
| Holt Rugby Football Club (Trading) Limited | Arts & recreation | 2017 |
| Holt Rugby Football Club Limited | Arts & recreation | 2013 |
| Home Farm Partners Limited | Agriculture & fishing | 2011 |
| Honeyguide Wildlife Holidays Limited | Administrative & support | 2002 |
| Honeypot (Norfolk) Limited | Real estate | 2022 |
| Hopping Homes Ltd | Real estate | 2019 |
| Horizon Assessments Ltd | Professional & scientific | 2024 |
| Howell Plant Hire Limited | Construction | 2002 |
| Hudson Holdings & Developments Ltd | Manufacturing | 2018 |
| Humberstones Homes Limited | Real estate | 2013 |
| Huntingdon Consultancy Ltd | Professional & scientific | 2022 |
| Hwjs Properties Limited | Real estate | 2019 |
| Ikiru Arts Limited | Manufacturing | 2017 |
| IKS Advisers (Strand) Limited | Real estate | 2017 |
| IKS Advisers Limited | Administrative & support | 2017 |
| Ilkminster Ltd | Other services | 2007 |
| Imayze Ltd | Wholesale & retail | 2023 |
| Impress Laundry Services LLP | | 2023 |
| INDEPENDENCE16 Limited | Education | 2016 |
| Industech Services Limited | Construction | 2013 |
| Infinity GAS Ltd | Construction | 2022 |
| Into the Night Limited | Extraterritorial | 2024 |
| Ivan Ashby Limited | Construction | 2018 |
| IVY Farm (Stanhoe) Management Co Limited | Households | 2004 |
| J and D Restoration Limited | Construction | 2015 |
| J. Lynn Engineering Ltd. | Professional & scientific | 2018 |
| JAA Fitness Limited | Arts & recreation | 2025 |
| Jack Richards Recruitment Limited | Administrative & support | 2018 |
| Jacobs & GEE Limited | Construction | 2011 |
| James & Milton Drilling Limited | Construction | 2002 |
| James Thompson Plumbing & Heating Engineer Limited | Construction | 2011 |
| Jamie's Plumbing Services Limited | Construction | 2022 |
| Jason Teviotdale Ltd | Construction | 2013 |
| JCP Builders Limited | Construction | 2012 |
| JDD Limited | Construction | 2020 |
| JEM Lake Handmade Kitchens and Interiors Limited | Manufacturing | 2021 |
| Jemo Homes Ltd | Construction | 2021 |
| Jennifer Norman Style Limited | Wholesale & retail | 2015 |
| Jesmond Professional Accommodation Limited | Real estate | 2015 |
| Jessamik Ltd | Wholesale & retail | 2016 |
| JEX Farm Limited | Real estate | 2017 |
| JHC Plumbing Ltd | Construction | 2025 |
| Jj's Enterprises Norfolk Limited | Education | 2021 |
| JLC Property Holdings Limited | Financial services | 2024 |
| JM Plumbing, Heating and Renewables Ltd | Construction | 2025 |
| JMC Garden & Landscape Services Ltd | Administrative & support | 2017 |