| Flying BOK PUB Company Limited | Hospitality | 2025 |
| Flying Colours Salon Ltd | Other services | 2023 |
| Flying PIG Newcastle Ltd | Hospitality | 2025 |
| Flynn Financial Ltd | Financial services | 2012 |
| FMC24 Development Limited | Professional & scientific | 2022 |
| Focus Care Personnel Ltd | Administrative & support | 2023 |
| Focus International Trading Ltd | Wholesale & retail | 2023 |
| FOG Town Ltd | Wholesale & retail | 2026 |
| Foley China Limited | Manufacturing | 2007 |
| Fone Club Retail Limited | Wholesale & retail | 2019 |
| Food and Solidarity Limited | Other services | 2021 |
| Foods and Drinks Ltd | Hospitality | 2026 |
| Football on Trent Ltd | Extraterritorial | 2025 |
| Forecourt Genie Ltd | Information & communication | 2026 |
| Forever Flavour Ltd | Manufacturing | 2025 |
| Forge Athletics Ltd | Wholesale & retail | 2026 |
| Forge Barns Limited | Real estate | 2014 |
| Forty Winks BED Centre Ltd | Wholesale & retail | 2023 |
| Forty Winks Bedrooms Ltd | Wholesale & retail | 2022 |
| Founders Place (Newcastle) Management Company Ltd | Real estate | 2023 |
| Foundry Growth Group Ltd | Professional & scientific | 2026 |
| Four Square Developments Ltd | Real estate | 2024 |
| Fourfoundersdevelopments Ltd | Construction | 2026 |
| Fouzis Rossett Limited | Hospitality | 2022 |
| FOX Engineering Limited | | 1992 |
| FOX Smart Repairs Limited | Wholesale & retail | 2024 |
| FP3 Ltd | Wholesale & retail | 2023 |
| FPX Group Limited | Financial services | 2025 |
| Frame Learning Limited | Education | 2020 |
| Frametech (UK) Limited | Construction | 2007 |
| Frank Wardle Design Limited | Administrative & support | 1987 |
| Franklin Roofing Ltd | Construction | 2025 |
| Frcapro Ltd | Information & communication | 2026 |
| Freds Pizzas NE Ltd | Hospitality | 2024 |
| Freedom Coaching Ltd | Health & social care | 2020 |
| French Interiors Limited | Wholesale & retail | 2005 |
| French Oven Ltd | Wholesale & retail | 2022 |
| Fresco Catering Services Ltd | Hospitality | 2024 |
| Fresh Finance Group Limited | Financial services | 2006 |
| Fresh Start Bathrooms Ltd | Construction | 2025 |
| Friarswood Clinic Limited | Health & social care | 2013 |
| Friarylaw Mediation & A.D.R. (NI) Limited | Professional & scientific | 2010 |
| From Little Twigs Ltd | Hospitality | 2022 |
| Froth Coffee (2019) Ltd | Hospitality | 2019 |
| FTH Events Ltd | Hospitality | 2024 |
| Fuel Theft Solutions Limited | Manufacturing | 2008 |
| Full Moon Baits Limited | Wholesale & retail | 2026 |
| FUN NE Limited | Wholesale & retail | 2019 |
| Funancial Services Limited | Professional & scientific | 2015 |
| Funke Designs Ltd | Information & communication | 2025 |
| Fuschia Terrace Management Limited | Extraterritorial | 2004 |
| Future Believers Ltd | Education | 2025 |
| FY Turkish Barber Ltd | Other services | 2025 |
| G & K Properties (NE) Ltd | Real estate | 2025 |
| G & M Roofing Solutions Limited | Construction | 2024 |
| G & P Electrical Services Limited | Construction | 2019 |
| G Swindells Brickwork Ltd | Construction | 2022 |
| G.S. Greg Trans Ltd | Transport & logistics | 2016 |
| G1 GAS Solutions Limited | Construction | 2018 |
| Gaia Holistics Limited | Wholesale & retail | 2022 |
| Galanthus Associates Limited | Education | 2023 |
| Galaxy Supermarket Limited | Wholesale & retail | 2023 |
| Galleria Holdings Limited | Information & communication | 2002 |
| Game Chest Ltd | Wholesale & retail | 2021 |
| Gameplan Wealth Management Ltd | Professional & scientific | 2021 |
| Garage Companion Limited | Administrative & support | 2024 |
| Garden and Animal Structures Limited | Manufacturing | 2018 |
| Gardiner Richardson Limited | Administrative & support | 1997 |
| Garla Heights Ltd | Real estate | 2025 |
| Garners (Newcastle Staffs) Limited | Wholesale & retail | 1937 |
| Gary Hodson Haulage and Crane Hire Ltd | Transport & logistics | 2012 |
| GAS Hero NE Ltd | Construction | 2024 |
| Gastup Ltd | Construction | 2024 |
| Gatestone Capital Ltd | Real estate | 2025 |
| Gateway Service Station Ltd | Wholesale & retail | 2021 |
| Gavan Hughes & SON Ltd | Wholesale & retail | 1998 |
| Gavin Brown Holdings Limited | Financial services | 2015 |
| GAZ Hobson Properties Limited | Construction | 2022 |
| GB Commercial Construction Limited | Construction | 2020 |
| GB Landlords Limited | Education | 2018 |
| GB Recruitment (Staffs) Limited | Administrative & support | 1999 |
| Gemini Exhibitions Limited | Construction | 2019 |
| Geminor Property Limited | Real estate | 2019 |
| Geminor UK Limited | Water & waste | 2012 |
| Geminor UK Tenders Limited | Water & waste | 2026 |
| Geminor Waste Treatment UK Limited | Water & waste | 2019 |
| Gemiuk Ltd | Water & waste | 2025 |
| Gentle Dove Healthcare Ltd | Health & social care | 2024 |
| George Ionut Mocanu Ltd | Transport & logistics | 2018 |
| Geraldine-O Ltd | Health & social care | 2022 |
| Gerddi Lettings Limited | Hospitality | 2021 |
| Ghuman Urban Build Ltd | Construction | 2025 |
| GI Accelerate Midco Limited | Financial services | 2026 |
| Gibbons Timber Limited | Wholesale & retail | 2019 |
| Gibson Fibreglass Services Limited | Construction | 2014 |
| Gibson Inns Limited | Hospitality | 2025 |
| Gildward Limited | Wholesale & retail | 2003 |
| Giliker Flynn Independent Wealth Ltd | Financial services | 2015 |
| Gilligans Limited | Professional & scientific | 2010 |
| Gills Investment Company Ltd | Real estate | 2015 |