| Eleven Marketplace Limited | Wholesale & retail | 2024 |
| Elite Edge Contractors Ltd | Construction | 2025 |
| Ellipse Leisure Buildings Limited | Construction | 2018 |
| Embleton Interiors Ltd | Wholesale & retail | 2022 |
| Emport Systems Limited | Information & communication | 2025 |
| Engineering Change Ltd | Professional & scientific | 2013 |
| Epic Innovation Ltd | Professional & scientific | 2017 |
| Etaxjobs Limited | Information & communication | 2004 |
| Everwell AI Ltd | Information & communication | 2025 |
| EX Pharmaceutical Inspectors Consortium Limited | Professional & scientific | 2014 |
| Exclusive Getaways Ltd | Real estate | 2024 |
| Fara Valla Limited | Information & communication | 2008 |
| Farm XS (Northern) Limited | Other services | 2006 |
| Fillpack Holdings Ltd | Financial services | 2025 |
| Fillpack Limited | Administrative & support | 1997 |
| First Impressions Framing & Art Printing Ltd | Wholesale & retail | 2018 |
| FIX for Free Ltd | Construction | 2025 |
| Flagship Catering Limited | Wholesale & retail | 2017 |
| Fleet Catering Consultants Limited | Hospitality | 2021 |
| Flexxicar Ltd | Administrative & support | 2020 |
| Flexxirent Limited | Administrative & support | 2018 |
| Flexxivan Ltd | Administrative & support | 2011 |
| Flock Health Ltd | Information & communication | 2012 |
| Floors for Living Limited | Wholesale & retail | 2007 |
| Flourish Community and Educational Psychology Limited | Education | 2023 |
| Flowrite Controls Limited | Manufacturing | 1997 |
| Forresters Hotel Limited | Hospitality | 2013 |
| Forresters NNC Limited | Administrative & support | 2013 |
| FOX IT Services Limited | Information & communication | 2024 |
| Foxington Ltd | Real estate | 2021 |
| Francis Bookkeeping Solutions Ltd | Professional & scientific | 2014 |
| Frankey Fitness Limited | Arts & recreation | 2026 |
| Funny Way to BE Comedy Ltd | Arts & recreation | 2020 |
| G Gibson Construction Limited | Construction | 2005 |
| G Wilson Contractors Limited | Water & waste | 2016 |
| G&H Property Developers Limited | Construction | 2014 |
| Gary Burton Removals Limited | Transport & logistics | 2006 |
| Gatehouse Garage Limited | Extraterritorial | 2016 |
| Gatepower Services Limited | Other services | 2008 |
| Gbase Limited | Extraterritorial | 2021 |
| Gelato Tutti Ltd | Manufacturing | 2022 |
| GEM Finance Ltd | Administrative & support | 2020 |
| Geo.A.Carter Limited | Real estate | 1952 |
| George Productions Limited | Arts & recreation | 2016 |
| GFO Catering Ltd | Hospitality | 2025 |
| GHT Consulting Ltd | Public administration | 2020 |
| Giraffe Automotive Services Limited | Professional & scientific | 2018 |
| GJR Pharma Solutions Limited | Professional & scientific | 2015 |
| GK Engineers Limited | Construction | 2024 |
| GMS (Kent) Ltd | Wholesale & retail | 2003 |
| Golfing Buddies Ltd | Arts & recreation | 2025 |
| Green Commerce Limited | Agriculture & fishing | 2003 |
| Gretadale Property Ltd | Hospitality | 2026 |
| Gudhaus Ltd | Real estate | 2022 |
| Guest Ready Holiday LET Solutions Ltd. | Administrative & support | 2022 |
| H C Property Ltd | Hospitality | 2019 |
| H C Property Partners Ltd | Hospitality | 2021 |
| Hagghaus Ltd | Real estate | 2021 |
| Hairdown Ltd | Hospitality | 2023 |
| Halflight VFX Ltd | Information & communication | 2025 |
| Halls Bakers Limited | Manufacturing | 2026 |
| Hanse-Uk Marine Consultants Limited | Other services | 2004 |
| Harkertine Consultants Limited | Financial services | 2010 |
| Harpers Developments Limited | Construction | 2018 |
| Harpers Properties Teesdale Ltd | Real estate | 2021 |
| Harveys Fine Food Ltd | Hospitality | 2023 |
| Hawthorn Consultants Limited | Professional & scientific | 2024 |
| HC Hideaways Ltd | Hospitality | 2023 |
| Helios Land Consultancy Ltd | Professional & scientific | 2022 |
| Henderson & Mitchell Construction Ltd. | Construction | 2012 |
| HGC Properties Limited | Hospitality | 2001 |
| Hidebound Limited | Manufacturing | 2004 |
| Highforce Scaffolding Ltd | Construction | 2015 |
| Hilltop Huts Ltd | Hospitality | 2019 |
| Holidays With History Limited | Hospitality | 2011 |
| Holly Nelson Consulting Limited | Professional & scientific | 2023 |
| Homecharge Ltd | Other services | 2011 |
| Honeyman Aviation Limited | Transport & logistics | 2022 |
| Honeyman Digital Limited | Wholesale & retail | 2022 |
| Honeyman Envirolab Limited | Professional & scientific | 2022 |
| Honeyman Group Limited | Professional & scientific | 1997 |
| Honeyman Medilab Limited | Health & social care | 2022 |
| Honeyman Pharmalab Limited | Professional & scientific | 2022 |
| Honeyman Water Limited | Professional & scientific | 2022 |
| Hoppers Barnard Castle Limited | Wholesale & retail | 2008 |
| Hot Shot Sparkle and Clean Ltd | Administrative & support | 2021 |
| Howell Media Group Limited | Information & communication | 2024 |
| Howell Training Limited | Education | 2024 |
| Howsons Heating Services Ltd | Construction | 2010 |
| Hydro North East Ltd | Construction | 2023 |
| I P D Motorsports Services Limited | Wholesale & retail | 2014 |
| I Sowerby Joinery Ltd | Construction | 2022 |
| I&Ajl Properties Ltd | Real estate | 2025 |
| Icel Ltd | Wholesale & retail | 2022 |
| Impact First Consulting Limited | Professional & scientific | 2010 |
| Impress Property Services Limited | Construction | 2017 |
| Inception Digital Ltd | Information & communication | 2016 |
| Info Lark Ltd | Information & communication | 2023 |
| Ingnet Ltd | Wholesale & retail | 2000 |
| Intelligent Engineering Limited | Professional & scientific | 2024 |