| Graham Howard Commercials Ltd | Real estate | 2021 |
| Graham Howard Group Limited | Financial services | 2023 |
| Graham Howard Holdings Limited | Real estate | 2021 |
| Graham Howard Properties Limited | Real estate | 2017 |
| Graham Installations Ltd | Construction | 2022 |
| Graham Properties South Ltd | Real estate | 2018 |
| Grain Culture Development UK Ltd | Wholesale & retail | 2024 |
| Grainly Carpentry Services Ltd | Construction | 2025 |
| Grainz UK Ltd | Information & communication | 2025 |
| Graitec Limited | Information & communication | 1982 |
| Gramar Developments Limited | Construction | 1995 |
| Gramax Window Cleaning Ltd | Administrative & support | 2024 |
| Grameen Ltd | Hospitality | 2016 |
| Gramercy Search Ltd | Administrative & support | 2016 |
| Gramich Holdings Limited | Real estate | 2025 |
| Grand Hotel Excelsior International Limited | Hospitality | 2012 |
| Grand Imperial Joinery Ltd | Manufacturing | 2026 |
| Grand Imperial Limited | Hospitality | 2004 |
| Grand Slam Wrestling Ltd | Administrative & support | 2024 |
| Grand Unified Consulting Limited | Professional & scientific | 2010 |
| Grandalf Ltd | Transport & logistics | 2024 |
| Grandeur Global Relocation Limited | Hospitality | 2024 |
| Grandiose Limited | Information & communication | 2006 |
| Grandkhugh Limited | Real estate | 2024 |
| Grange Upholstery Ltd | Manufacturing | 2012 |
| Granite Housing Ltd | Real estate | 2025 |
| Granite Kitchen Services Ltd | Administrative & support | 2005 |
| Granite Ridge Holdings Ltd | Financial services | 2025 |
| Granite Worktops 2 Go Ltd | Construction | 2015 |
| Granleigh (Bournemouth) Management Limited | Households | 1974 |
| Grant Bird Woodworks Ltd | Construction | 2026 |
| Granthorne Holdings Limited | Construction | 2015 |
| Grapevine Midlands Ltd | Administrative & support | 2022 |
| Graphic Channel Consultancy Ltd | Professional & scientific | 2019 |
| Graphics Hub Ltd | Professional & scientific | 2012 |
| Grassroots Basketball CIC | Arts & recreation | 2023 |
| Gratify Gift Ltd | Wholesale & retail | 2021 |
| Gravey Holdings Limited | Financial services | 2025 |
| Gravita II LLP | | 2014 |
| Gravita III LLP | | 2009 |
| Gravitas Residential Ltd | Real estate | 2020 |
| Grayhawk Transformations Limited | Construction | 2022 |
| Grayporte Limited | Professional & scientific | 2015 |
| Grays Automation Ltd | Professional & scientific | 2025 |
| Grays Developments Ltd | Construction | 1998 |
| Grayshott Linen Ltd | Other services | 2016 |
| Grayton Estates Limited | Real estate | 2002 |
| Great British Computing Ltd. | Information & communication | 2015 |
| Great British Floristry Ltd | Wholesale & retail | 2021 |
| Great G'S Pet Supplies Ltd | Wholesale & retail | 2025 |
| Great Hope Mining Syndicate Ltd | Mining & quarrying | 2025 |
| Great Kitchen Ltd | Hospitality | 2018 |
| Great Wave AI Limited | Information & communication | 2021 |
| Greatbuild Construction Limited | Construction | 2016 |
| Greaterlight Evangelical Ministries Ltd | Other services | 2021 |
| Greatness of OUD Limited | Wholesale & retail | 2022 |
| Greaves Brickwork & Construction Ltd | Construction | 2023 |
| Greek C&G Ltd | Hospitality | 2019 |
| Greek Cookery Ltd | Hospitality | 2026 |
| Greek Gyros Limited | Wholesale & retail | 2016 |
| Greekmasters Ltd | Other services | 2006 |
| Greeko Restaurants Ltd | Hospitality | 2022 |
| Green and Co Build Limited | Construction | 2020 |
| Green BOW Maritime Limited | Mining & quarrying | 2014 |
| Green Cleen (Hampshire South West) Limited | Administrative & support | 2025 |
| Green Drainage & Plumbing Ltd | Construction | 2013 |
| Green Dream Construction & Electrical Ltd | Construction | 2025 |
| Green Dream Property Services Ltd | Construction | 2025 |
| Green Flash Horizon Ltd | Transport & logistics | 2008 |
| Green Foot Group Limited | Construction | 2015 |
| Green FOX Cleaning Southampton Limited | Administrative & support | 2020 |
| Green Gift Cards Limited | Manufacturing | 2024 |
| Green Gorilla Recycling Ltd | Information & communication | 2025 |
| Green Grape Pubs Limited | Hospitality | 2025 |
| Green Keeper Lawns Limited | Administrative & support | 2007 |
| Green Lane (Southampton) NO 2 Limited | Real estate | 2017 |
| Green Lane Homes (Hertfordshire) Ltd | Construction | 2013 |
| Green Leaf Tax and Accounts Ltd | Professional & scientific | 2023 |
| Green Light Services Limited | Other services | 2007 |
| Green Lizard Electrical Ltd | Construction | 2016 |
| Green Magic Co. UK Ltd | Wholesale & retail | 2012 |
| Green Marine Associates Ltd | Professional & scientific | 2020 |
| Green Monkey Productions Limited | Information & communication | 2025 |
| Green Moran Property Ltd | Real estate | 2023 |
| Green Oasis Garden Maintenance Limited | Administrative & support | 2024 |
| Green Office Solutions Limited | Wholesale & retail | 2008 |
| Green Orchard Properties Limited | Real estate | 2021 |
| Green Parks Holidays (Ilfracombe) Ltd | Hospitality | 2015 |
| Green Plane Solutions Ltd | Information & communication | 2020 |
| Green Spaces Gardening Ltd | Administrative & support | 2025 |
| Green Square Design Ltd | Construction | 2022 |
| Green Stem Consulting Ltd | Information & communication | 2022 |
| Green Street Energy Ltd | Construction | 2024 |
| Green Tees Golf Ltd | Wholesale & retail | 2020 |
| Green Threads DPP Ltd | Information & communication | 2024 |
| Green Threads Group Ltd | Professional & scientific | 2024 |
| Green Threads Trading Ltd | Professional & scientific | 2024 |
| Green Touch Gardens Limited | Professional & scientific | 2008 |
| Green Touch Lawns Limited | Professional & scientific | 2008 |
| Green Wood Stays Ltd | Real estate | 2025 |