| GGK Consultants Ltd. | Other services | 2015 |
| GH Supply Chain Limited | Administrative & support | 2026 |
| Ghaffar NW Ltd | Real estate | 2024 |
| Ghazala Haroon Limited | Real estate | 2021 |
| GHK Ltd | Hospitality | 2019 |
| Ghost 44 Factory Ltd | Wholesale & retail | 2024 |
| Ghozient Tech Hub Solutions Ltd | Information & communication | 2026 |
| Giant OIL Tools UK Ltd | Manufacturing | 2025 |
| Gifford (Bowdon) Limited | Financial services | 2023 |
| Gifted by YOU Limited | Wholesale & retail | 2018 |
| Gifted Management Consulting Ltd | Professional & scientific | 2019 |
| Gilbert House Management Limited | Households | 1989 |
| Gill Lane Plot Owners LLP | | 2012 |
| Gill Nono Ltd | Real estate | 2013 |
| Gillian Cohen & Associates Ltd | Professional & scientific | 2019 |
| Gillian Cohen Consultancy Ltd | Professional & scientific | 2019 |
| Ginger PUB Group Limited | Hospitality | 2017 |
| Gings Thai Massage and Spa Limited | Other services | 2019 |
| Ginkgo Herbs and Health Ltd | Wholesale & retail | 2019 |
| GIO GOI Brands Limited | Wholesale & retail | 2016 |
| Gio-Goi Trading Limited | Wholesale & retail | 2016 |
| Girl Boss HQ Limited | Other services | 2023 |
| Girl Boss Online Training Limited | Education | 2023 |
| Giusseppe Consultants Limited | Professional & scientific | 2025 |
| GJ MCR Ltd | Health & social care | 2025 |
| GJ Systems Limited | Construction | 2025 |
| GJD Business Services Ltd | Administrative & support | 2023 |
| GJH Dental Ltd | Health & social care | 2022 |
| GJSUK1 Limited | Financial services | 2014 |
| GJW Business Consulting Limited | Administrative & support | 2009 |
| GKP Property Ltd | Real estate | 2024 |
| GKP Property Trading Ltd | Real estate | 2024 |
| GL54 Consulting Limited | Professional & scientific | 2021 |
| Glad Accountancy Limited | Professional & scientific | 2023 |
| Glad House Limited | Real estate | 2021 |
| Gladibet Ltd | Arts & recreation | 2025 |
| Glamorous AI Ltd | Information & communication | 2020 |
| Glamour EDU Ltd | Other services | 2012 |
| Glamour Girl Ltd | Other services | 2019 |
| Glamour Outfitters Ltd | Manufacturing | 2011 |
| Glan-Navan Properties Limited | Real estate | 2023 |
| Glaric Consultancy Ltd | Professional & scientific | 1999 |
| Glass House Construction Limited | Professional & scientific | 2000 |
| Glass Talent UK Ltd | Administrative & support | 2023 |
| Glasscraft Decorative Limited | Manufacturing | 2010 |
| Glebe Hall Limited | Construction | 2015 |
| Gledhome Properties Ltd | Real estate | 2023 |
| Glen Maye (Sale) 1973 Limited | Households | 1973 |
| Glenavon Holdings Limited | Financial services | 2017 |
| Glenavon Plumbing & Heating Limited | Construction | 2010 |
| Glencullen Limited | Extraterritorial | 2001 |
| Glendale Solutions Limited | Administrative & support | 2023 |
| Glenn Rees Project Limited | Administrative & support | 2012 |
| Glentana Developments Limited | Agriculture & fishing | 2013 |
| Glinn Statistical Programming Limited | Professional & scientific | 2023 |
| Glitch Free Accounting Ltd | Professional & scientific | 2025 |
| Glitter Property Limited | Real estate | 2021 |
| Glmc Fibre Group Ltd | Professional & scientific | 2022 |
| GLO MCR Limited | Other services | 2023 |
| GLO Medical Ltd | Other services | 2023 |
| Global Brother Ltd | Wholesale & retail | 2025 |
| Global Corporate Treasurers Limited | Administrative & support | 2019 |
| Global Corrosion Consultants Limited | Professional & scientific | 2016 |
| Global Ecommerce Management Ltd | Professional & scientific | 2025 |
| Global Equity Finance Ltd | Professional & scientific | 2013 |
| Global HR Services Limited | Professional & scientific | 2024 |
| Global Investment Finance Ltd | Real estate | 2016 |
| Global Neurosurgery Ltd | Health & social care | 2016 |
| Global Privacy Recruitment Limited | Professional & scientific | 2012 |
| Global Project 20 Ltd | Wholesale & retail | 2025 |
| Global Project Audit Services Limited | Administrative & support | 2006 |
| Global Renewable Biofuels Limited | Professional & scientific | 2022 |
| Global Scope Services Ltd | Real estate | 2022 |
| Global Tax Geek Limited | Professional & scientific | 2021 |
| Globalsoft Technologies Limited | Information & communication | 2018 |
| Globenet Solutions Ltd | Information & communication | 2011 |
| Globway LLP | | 2026 |
| Glory Management Phase 1 Limited | Real estate | 2009 |
| Glory PVT Ltd | Real estate | 2021 |
| Glory Time Christian Centre Limited | Education | 2020 |
| Glove Sports Limited | Arts & recreation | 2014 |
| Glue Insight & Research Ltd | Professional & scientific | 2016 |
| Glureka Ltd | Wholesale & retail | 2024 |
| GM and Cardiac Health Ltd | Health & social care | 2025 |
| GM Leitch (Holdings) Limited | Administrative & support | 2015 |
| GM Portfolio Ltd | Real estate | 2020 |
| GM Signs Ltd | Professional & scientific | 2023 |
| Gmbsv Ltd | Financial services | 2018 |
| GMC Automotive Limited | Wholesale & retail | 2023 |
| GML Talent Solutions Limited | Administrative & support | 2025 |
| GML77 Contractor Limited | Administrative & support | 2015 |
| Gmmk Ltd | Construction | 2026 |
| Gmmuk Limited | Administrative & support | 2023 |
| GMP Barbican LLP | | 2007 |
| Gnjc Ltd | Health & social care | 2024 |
| GNS Security Ltd | Administrative & support | 2016 |
| Go Beyond Coaching Limited | Health & social care | 2025 |
| Go Communications Consultancy Limited | Other services | 2019 |
| Go Go Property Limited | Real estate | 2023 |
| Go Live Global Limited | Professional & scientific | 2017 |