| GET a Grip 24-7 Limited | Other services | 2024 |
| GET Hook'D Limited | Information & communication | 2026 |
| GET SET Golf Ltd | Information & communication | 2025 |
| GET Sports Inspired Ltd | Other services | 2018 |
| Gethsemane Ltd | Wholesale & retail | 2022 |
| Gets Consultancy Services Ltd | Professional & scientific | 2022 |
| GG Cleaning Services Ltd | Administrative & support | 2021 |
| GG Elite Freight Ltd | Transport & logistics | 2025 |
| GG Expansions Ltd | Real estate | 2026 |
| GG Pro House Renovator Ltd | Construction | 2024 |
| GG-278-530 Limited | Real estate | 2021 |
| Ggsk Decorators Limited | Construction | 2025 |
| GH Mobilia Ltd | Construction | 2022 |
| Ghair Limited | Other services | 2017 |
| Gharkul Limited | Real estate | 2020 |
| Ghazi Autos Ltd | Wholesale & retail | 2017 |
| GHE Express Limited | Transport & logistics | 2020 |
| Ghil Ltd | Wholesale & retail | 2024 |
| GHM Home Transformatrions Ltd | Construction | 2025 |
| Ghotra Logistic Ltd | Administrative & support | 2019 |
| Ghulam Jillani Ltd | Wholesale & retail | 2025 |
| Ghuman Ltd | Transport & logistics | 2026 |
| Ghurkin Ltd | Information & communication | 2022 |
| GI Estates Limited | Real estate | 2022 |
| GI Radiology Ltd | Health & social care | 2015 |
| Giant Car Hire&Storage Ltd | Wholesale & retail | 2012 |
| Gibson CN Services Ltd | Health & social care | 2013 |
| Gidda Properties Ltd | Real estate | 2017 |
| Giffords Fine Foods Limited | Wholesale & retail | 1999 |
| Gift SET and Match Limited | Wholesale & retail | 2000 |
| Gigaminds Limited | Wholesale & retail | 2022 |
| Giggling Kids Limited | Arts & recreation | 2020 |
| Gigi Kitchens & Bedrooms Limited | Manufacturing | 2025 |
| Gilgal Holdings Limited | Extraterritorial | 2025 |
| Gill and SON Slough Limited | Wholesale & retail | 2010 |
| Gill Autorepairs Ltd | Wholesale & retail | 2025 |
| Gill Brickwork Limited | Construction | 2024 |
| Gill Brothers Haulage Ltd | Transport & logistics | 2025 |
| Gill Brothers Transport Limited | Transport & logistics | 2022 |
| Gill Construction London Ltd | Construction | 2025 |
| Gill Food Centre Limited | Wholesale & retail | 2018 |
| Gill Land & Property Ltd | Real estate | 2016 |
| Gill Life Protect Limited | Financial services | 2025 |
| Gill London Transport Ltd | Transport & logistics | 2024 |
| Gill Motors Ltd | Transport & logistics | 2019 |
| Gill Saloh Property Investment Ltd | Real estate | 2025 |
| Gill UK Transport Ltd | Transport & logistics | 2022 |
| Gillagio Holdings Limited | Financial services | 2018 |
| Gillani Chauffeurs Limited | Transport & logistics | 2016 |
| Gillhaulage Ltd | Transport & logistics | 2026 |
| Gills Empire of Investments Limited | Real estate | 2019 |
| Gills Haulage Ltd | Transport & logistics | 2018 |
| Gills Knolton Limited | Wholesale & retail | 2018 |
| Gills Meat Market Limited | Wholesale & retail | 2017 |
| Gills UK Investment Limited | Real estate | 2016 |
| Gillspace Ltd | Real estate | 2024 |
| Gillty Treats Ltd | Hospitality | 2025 |
| Ginakaruna Catering Ltd | Hospitality | 2023 |
| Ginger Rabbit Hair Ltd | Other services | 2014 |
| Ginger Tree Properties Ltd | Extraterritorial | 2022 |
| Ginkgo Homes Ltd | Real estate | 2025 |
| Gioioso Holdings Ltd | Professional & scientific | 2024 |
| Girls Hub Ltd | Other services | 2025 |
| Girn Limited | Extraterritorial | 2022 |
| GJR Property Management Limited | Real estate | 2025 |
| GK Associates International Ltd | Transport & logistics | 2024 |
| GK Cars Limited | Wholesale & retail | 2023 |
| GK Electricals London Ltd | Construction | 2025 |
| GK Gloss Ltd | Wholesale & retail | 2025 |
| GK Kitchen & Bedrooms Ltd | Manufacturing | 2022 |
| GK Osteopathy& Wellness Clinic Limited | Health & social care | 2026 |
| GK Play and Care Limited | Health & social care | 2023 |
| GK Residential Properties Ltd | Real estate | 2024 |
| Gk's Hair and Beauty Limited | Other services | 2022 |
| GKB Limited | Manufacturing | 2015 |
| GKG Lettings Ltd | Real estate | 2025 |
| GKM Infra Slough Limited | Construction | 2024 |
| Gkmh Services Ltd | Manufacturing | 2018 |
| GKS Construction Limited | Construction | 2023 |
| GKS Transport Ltd | Transport & logistics | 2018 |
| Glacier Smiles Limited | Health & social care | 2018 |
| Glade Holdings Ltd | Manufacturing | 2008 |
| Gladstone FM Services Limited | Administrative & support | 2024 |
| Gladys Care Support Services Ltd | Health & social care | 2018 |
| Glam and Gota Ltd | Professional & scientific | 2025 |
| Glam Hair by Lory Ltd | Other services | 2021 |
| Glamour Glow by KJ Limited | Wholesale & retail | 2025 |
| Glance Eyecare Ltd | Health & social care | 2024 |
| Glasgow Splash Tours Limited | Transport & logistics | 2023 |
| Glass and Windoors Limited | Construction | 2026 |
| Glass Contractor Ltd | Construction | 2022 |
| Glasshouse Restaurant Surrey Limited | Hospitality | 2025 |
| Gleam Steel Limited | Other services | 2010 |
| Gleam Team Cleaning Services Limited | Administrative & support | 2004 |
| Gleghorns Garden & Grounds Ltd | Administrative & support | 2023 |
| Glendale Securities Limited | Real estate | 1999 |
| Glenfields (Stoke Poges) Management Company Limited | Households | 2000 |
| Glensec (Doncaster) Limited | Real estate | 2024 |
| Glensec (Salisbury Road) Limited | Real estate | 2023 |
| Glensec (Selby) Limited | Real estate | 2023 |