| Globo Health Ltd | Health & social care | 2022 |
| Globocon Limited | Professional & scientific | 2026 |
| Glob’L Desi Ltd | Wholesale & retail | 2025 |
| Gloryland Health Care Services Limited | Health & social care | 2020 |
| Glow UP LDN Ltd | Other services | 2025 |
| Glowgrid Energy Ltd | Construction | 2026 |
| GLT Leisure Ltd | Hospitality | 2024 |
| GM General Management Limited | Hospitality | 2021 |
| GMD Square Ltd | Construction | 2022 |
| GN07 Limited | Transport & logistics | 2024 |
| Go Jumbo Limited | Hospitality | 1999 |
| Go UP Construction RA Ltd | Construction | 2022 |
| Goalloungetv Ltd | Professional & scientific | 2025 |
| Goddard Property Development Services Limited | Construction | 2017 |
| Gofm Ltd | Administrative & support | 2024 |
| Gold Mount Markets Ltd | Financial services | 2019 |
| Gold Obla Ltd | Information & communication | 2024 |
| Golden Cohort Ltd | Professional & scientific | 2021 |
| Golden Services Plus Limited | Construction | 2009 |
| GOLDEN13 Ltd | Transport & logistics | 2025 |
| Goldene Gans Ltd | Construction | 2016 |
| Goldx Services Ltd | Administrative & support | 2023 |
| Golf Blasts Ltd | Manufacturing | 2023 |
| Golf Travel Club Ltd | Wholesale & retail | 2023 |
| Good Apples Ltd | Hospitality | 2023 |
| Good Form Pilates Ltd | Health & social care | 2026 |
| Good Luck Race Limited | Real estate | 2021 |
| Gore Capital Limited | Real estate | 2004 |
| Goussous Holdings Limited | Financial services | 2019 |
| Gower House Acceptances LLP | | 2009 |
| GP Property & Investments Ltd | Real estate | 2024 |
| Graasroots Ltd | Real estate | 2021 |
| Grace Pins Ltd | Other services | 2026 |
| Gradewell Construction Limited | Construction | 2005 |
| Gradewell Property & Developments Limited | Real estate | 2006 |
| Gratia International Ltd | Other services | 2007 |
| Gravity Labs London Ltd | Information & communication | 2022 |
| Gravity Project Management & Construction Ltd | Construction | 2023 |
| Great West Services Ltd | Wholesale & retail | 2025 |
| Great West Studio Limited | Information & communication | 2021 |
| Green Farm Globle Ltd | Wholesale & retail | 2020 |
| Green Format Group Limited | Construction | 2020 |
| Green Garden London Ltd | Professional & scientific | 2025 |
| Green Heat Services Limited | Construction | 2021 |
| Green Planet Waste Ltd | Water & waste | 2021 |
| Greenlight Safety Limited | Professional & scientific | 2020 |
| Greentrend Limited | Information & communication | 2016 |
| Greenvillage Air Conditioning Ltd | Construction | 2023 |
| Greenvision Properties Limited | Construction | 2020 |
| Greenware Technologies UK Ltd | Information & communication | 2021 |
| Greenwood Property Construction Ltd | Construction | 2021 |
| Greg Chikaher Consulting Limited | Professional & scientific | 2014 |
| Grena Limited | Manufacturing | 2003 |
| Griffin Park Stadium Limited | Arts & recreation | 1901 |
| GRO Talent Ltd | Administrative & support | 2026 |
| Grocery Store Limited | Wholesale & retail | 2013 |
| Groovepath Golf Ltd | Manufacturing | 2025 |
| Grosvenor Road Property Ltd | Households | 2020 |
| Grounded Properties Ltd | Real estate | 2023 |
| Grover Enterprise Ltd | Wholesale & retail | 2026 |
| GRS KAR Limited | Health & social care | 2017 |
| GRS KAR Properties Limited | Real estate | 2022 |
| Gryphon Global Services Ltd | Information & communication | 2022 |
| GSB Build and Design Limited | Construction | 2026 |
| GSG UK Homes Limited | Real estate | 2020 |
| GSL Buy Ltd | Wholesale & retail | 2022 |
| GSP Construction Ltd | Construction | 2012 |
| GT Financial Limited | Professional & scientific | 2005 |
| GTC Project Ltd | Construction | 2022 |
| Guardian Enterprises Ltd | Real estate | 2013 |
| Guardian Mortgages and Risk Solutions Ltd | Financial services | 2025 |
| Guide Source Ltd | Professional & scientific | 2025 |
| Guide Square Ltd | Administrative & support | 2025 |
| Guided Ultrasonics Limited | Manufacturing | 1999 |
| Gurjas Partners Limited | Hospitality | 2019 |
| Gurra Construction Ltd | Construction | 2022 |
| GV Foods Limited | Hospitality | 2013 |
| GVR Regulatory Services Ltd | Professional & scientific | 2012 |
| GWM Soluxns Ltd | Information & communication | 2019 |
| Gymrequin Ltd | Wholesale & retail | 2025 |
| Gypfix Interiors Ltd | Construction | 2009 |
| H&W Fuse Ltd | Wholesale & retail | 2017 |
| H.Corporation Limited | Real estate | 2015 |
| H27 Consulting Ltd | Wholesale & retail | 2026 |
| H4U Group Ltd | Construction | 2024 |
| Haavi Horizons Group Limited | Financial services | 2019 |
| Haavi Horizons Limited | Real estate | 2015 |
| Haavi Innovations Limited | Manufacturing | 2018 |
| Hahura Clean Limited | Administrative & support | 2019 |
| Halford Bridge Hotel Bar and Grill Ltd | Real estate | 2021 |
| Hall Music Management Limited | Professional & scientific | 2013 |
| Hampden Services Limited | Information & communication | 2023 |
| Hampshire Cleaning Solutions Ltd | Administrative & support | 2025 |
| Hand of Fatima Limited | Hospitality | 2022 |
| Hands of Gold Workshop Ltd | Manufacturing | 2023 |
| Hansa-Flex Hydraulics UK Limited | Wholesale & retail | 2015 |
| Hansa-Flex UK Ltd | Manufacturing | 1983 |
| Hanzy Design Ltd | Wholesale & retail | 2025 |
| Happy Productive People Limited | Information & communication | 2017 |
| Haptisense Ltd | Information & communication | 2026 |