| Gabha Pharma Ltd | Wholesale & retail | 2024 |
| Gabriela Gomindes Photography Ltd | Professional & scientific | 2025 |
| Gadget Corporation Ltd | Wholesale & retail | 2019 |
| Gadget Gifts Ltd | Wholesale & retail | 2016 |
| Gadget Repair & Accessories Ltd | Manufacturing | 2019 |
| Gadget Repairs (London) Ltd | Other services | 2026 |
| Gadgets 360 Ltd | Wholesale & retail | 2024 |
| Gadgets Technology Ltd | Information & communication | 2016 |
| Gadgetz and Giftz Zone Ltd | Wholesale & retail | 2021 |
| Gagan's Beauty Care Ltd | Health & social care | 2024 |
| Gagandeep Construction Ltd | Construction | 2025 |
| Gagandeep Trading Limited | Wholesale & retail | 2006 |
| Gagandeep Transport London Ltd | Transport & logistics | 2025 |
| Galactic Construction Limited | Construction | 2025 |
| Galaxy Capital Invest Limited | Real estate | 2018 |
| Galaxy Glow Ltd | Wholesale & retail | 2025 |
| Galaxy Kitchen Limited | Manufacturing | 2018 |
| Galaxy Management Limited | Real estate | 2022 |
| Gallianz (Anhui) New Materials Co Ltd | Manufacturing | 2024 |
| Gami Contracts Ltd | Construction | 2016 |
| Garande Academy Ltd | Education | 2019 |
| Garden Guru Landscaping Ltd | Professional & scientific | 2025 |
| Garden Marqueez Ltd | Hospitality | 2020 |
| Gardens Freight Solutions Ltd | Transport & logistics | 2026 |
| Gary Construction Ltd | Construction | 2016 |
| Gary Scaffolding Ltd | Construction | 2019 |
| Gary's Fish & Chips Ltd | Hospitality | 2026 |
| Gastronomical Ltd | Hospitality | 2024 |
| Gaunik LAL UK Ltd | Wholesale & retail | 2021 |
| Gauranga Investments Ltd | Real estate | 2026 |
| Gaurav Dhir Construction Ltd | Construction | 2025 |
| Gautam Constructions Ltd | Construction | 2025 |
| Gautam Tailors Centre Ltd | Administrative & support | 2017 |
| Gazi Ilford Ltd | Hospitality | 2025 |
| GB Estate Holdings Limited | Real estate | 2025 |
| GB Group of Properties Ltd | Real estate | 2020 |
| GB Home Improve Ltd | Other services | 2017 |
| GB K - Rend Ltd | Construction | 2024 |
| GB Superstores Ltd | Wholesale & retail | 2026 |
| GBL International Ltd | Manufacturing | 2023 |
| GC Chauffeurs Limited | Transport & logistics | 2025 |
| GCC Exchange UK Limited | Financial services | 2006 |
| GD Film Promotions Ltd | Information & communication | 2019 |
| GEA Constructions Ltd | Construction | 2021 |
| Gear Haus Ltd | Wholesale & retail | 2022 |
| Gearpro Repairs Limited | Wholesale & retail | 2025 |
| Geektive Limited | Information & communication | 2020 |
| Geetwear Limited | Wholesale & retail | 2005 |
| Gelaviv Limited | Health & social care | 2014 |
| GEM Windows Ltd | Construction | 2017 |
| General Superstore Ltd | Wholesale & retail | 2018 |
| GENESIS24/7 Healthcare Professionals Ltd | Health & social care | 2014 |
| Geomount Limited | Manufacturing | 1991 |
| George Green Local Ltd | Wholesale & retail | 2025 |
| GET 2 Go Estate Ltd | Real estate | 2024 |
| GET 2 Go Ltd | Construction | 2020 |
| GET Nailed Ltd | Other services | 2024 |
| GFS Constructions Ltd | Construction | 2019 |
| Gfscourier Ltd | Transport & logistics | 2025 |
| GFX Atwaul Limited | Manufacturing | 2022 |
| GH Home Designs Limited | Construction | 2025 |
| GH Kang Construction Ltd | Construction | 2023 |
| GHA Construction Limited | Construction | 2026 |
| Ghaffar Trade Direct Wholesale Ltd | Wholesale & retail | 2025 |
| Ghai Bros Limited | Real estate | 2018 |
| Ghai Trading Limited | Wholesale & retail | 2020 |
| Gheelightful Ltd | Manufacturing | 2025 |
| GHF Builders Limited | Construction | 2014 |
| GHK Accounting Ltd | Professional & scientific | 2016 |
| Ghost Taverns Ltd | Hospitality | 2026 |
| Ghosted Again Ltd | Information & communication | 2025 |
| Ghotra Construction Ltd | Construction | 2014 |
| Ghotra Home Improvement Ltd | Construction | 2019 |
| Ghotra Investments Limited | Real estate | 2024 |
| Ghotra Plant Hire Limited | Administrative & support | 2024 |
| Ghotra Travels Limited | Other services | 2015 |
| GHR Trade Limited | Wholesale & retail | 2015 |
| Ghuttliebs Consultancy Limited | Professional & scientific | 2024 |
| Gian & Sons UK Limited | Wholesale & retail | 2019 |
| Giany Jewellers London Ltd | Wholesale & retail | 2022 |
| Giany Jewellers Ltd | Wholesale & retail | 2017 |
| Giftsmarket Ltd | Wholesale & retail | 2025 |
| Gifty Pandher Music Ltd | Information & communication | 2026 |
| Giga Autos Ltd | Wholesale & retail | 2026 |
| Gill & Carter Limited | Real estate | 2023 |
| Gill & Nephew Investments Limited | Real estate | 2017 |
| Gill Barbers Limited | Other services | 2025 |
| Gill Brothers Building Construction Limited | Construction | 2025 |
| Gill Brothers Limited | Construction | 2019 |
| Gill Founders & Co Limited | Financial services | 2022 |
| Gill Properties & Investments Ltd | Real estate | 2025 |
| Gill Realty Limited | Real estate | 2019 |
| Gill Realty LRR Ltd | Real estate | 2023 |
| Gill Technology Consulting Limited | Information & communication | 2015 |
| Gill Trading London Limited | Other services | 2023 |
| Gillz Diamond Construction Ltd | Construction | 2023 |
| Gillz Trucking Ltd | Transport & logistics | 2024 |
| Gilt Edge London Ltd | Other services | 2025 |
| Gilt Edge Solutions Ltd | Professional & scientific | 2022 |
| GIM Enterprises Limited | Wholesale & retail | 2008 |