| GCS Healthcare Ltd | Health & social care | 2014 |
| GD Wholesalers Ltd | Wholesale & retail | 2026 |
| Gdc-Education Limited | Education | 2019 |
| GDS Music Limited | Information & communication | 2025 |
| Gear Gifts Limited | Wholesale & retail | 1975 |
| Gebler Associates Limited | Professional & scientific | 1984 |
| Gebler Tooth Holdings Limited | Financial services | 2025 |
| GEE Smurfs Ltd | Wholesale & retail | 2022 |
| Gees DRY Ltd | Other services | 2011 |
| Geet's Services Ltd | Information & communication | 2026 |
| GEM Developers UK Ltd | Construction | 2017 |
| Gemer 77 Ltd | Construction | 2022 |
| Gemimex Ltd | Wholesale & retail | 2015 |
| Gemini Global Solutions Ltd. | Real estate | 2013 |
| Gems & Treasures Ltd | Wholesale & retail | 2024 |
| Gemtides Limited | Wholesale & retail | 2025 |
| Gen-C-Uk Ltd | Professional & scientific | 2020 |
| Genaima AI Ltd | Information & communication | 2026 |
| General Growth Ltd | Professional & scientific | 2023 |
| General Merchant Business Limited | Administrative & support | 2016 |
| General Store Holdings Limited | Wholesale & retail | 2023 |
| General Waste Solution Ltd | Administrative & support | 2025 |
| Generation for Change and Development- Gencad | Other services | 2010 |
| Genex Growth Ltd | Information & communication | 2026 |
| Genius KID UK Ltd | Education | 2026 |
| Gennovate AI Limited | Information & communication | 2026 |
| Gensalus Ltd | Real estate | 2016 |
| Gensoft Tech Services Ltd | Information & communication | 2019 |
| Gentle Care DRY Cleaners Limited | Other services | 2026 |
| Genuine Clean Ltd | Administrative & support | 2026 |
| Genz Orbit Enterprises Ltd | Information & communication | 2026 |
| GEO Shawarma Limited | Hospitality | 2026 |
| Geode Nail Bar Ltd | Other services | 2024 |
| Geodeus Construct Limited | Construction | 2020 |
| Geordie Pete Ltd | Administrative & support | 2018 |
| George & the Juice Ltd | Wholesale & retail | 2021 |
| George Atelier Ltd | Professional & scientific | 2024 |
| George Cleaning Services Limited | Administrative & support | 2009 |
| Georginos Caffe Italiano Ltd | Hospitality | 2018 |
| Georginos Delights Hounslow Limited | Hospitality | 2023 |
| Georginos Limited | Hospitality | 2018 |
| GET Ahead Tuition Ltd | Education | 2013 |
| GET Driving Ltd | Hospitality | 2019 |
| GET Planning Permission Done Ltd | Professional & scientific | 2021 |
| GET2UNI.COM Ltd | Education | 2017 |
| GG-602-601 Limited | Real estate | 2021 |
| GGS Care Ltd | Information & communication | 2012 |
| GGS Global Limited | Professional & scientific | 2009 |
| GHA Developers Ltd | Information & communication | 2024 |
| Ghai (UK) Ltd | Real estate | 2020 |
| Ghai Convenience Store Ltd | Wholesale & retail | 2020 |
| Ghai Real Estates Limited | Real estate | 2020 |
| Ghani Peripherals Ltd | Wholesale & retail | 2025 |
| Ghanshyam Holdings Ltd | Real estate | 2019 |
| Gharkiglow Ltd | Wholesale & retail | 2026 |
| GHC Impex Limited | Wholesale & retail | 2023 |
| GHK Builders Ltd | Construction | 2026 |
| Ghkt Limited | Real estate | 2016 |
| GHM Capital Ltd | Wholesale & retail | 2019 |
| Ghotra Builders Ltd | Construction | 2021 |
| Giant & Giant Ltd | Arts & recreation | 2013 |
| Gifix Ltd | Construction | 2019 |
| Gift Courier Limited | Transport & logistics | 2019 |
| Gift Gallery (UK) Limited | Wholesale & retail | 2009 |
| Gigconnecthub Ltd | Arts & recreation | 2024 |
| Giggles Day Nursery Limited | Education | 2007 |
| GIGOV1981 Ltd | Construction | 2014 |
| Gilderick Trading Ltd | Wholesale & retail | 2019 |
| Gill & Co London Ltd | Real estate | 2024 |
| Gill & Virk Courier Ltd | Transport & logistics | 2021 |
| Gill Realtors Limited | Real estate | 2024 |
| Gills Properties Limited | Real estate | 2025 |
| Gillstone Properties Ltd | Real estate | 2026 |
| Gimela Groundworks & Demolition Ltd | Construction | 2020 |
| Gio's 88 Limited | Hospitality | 2017 |
| Giraffe Roofing Limited | Construction | 2025 |
| Girls 'N Brides Ltd | Wholesale & retail | 2016 |
| GJJ Brothers Limited | Real estate | 2025 |
| GK Heating Solutions Ltd | Energy | 2022 |
| GKM Construction Ltd | Construction | 2023 |
| Gkss Properties Limited | Real estate | 2026 |
| GL Driving School Ltd | Education | 2015 |
| Glam & Go Training Academy Ltd | Education | 2024 |
| Glaxiacode Limited | Information & communication | 2026 |
| Glazemart Ltd | Wholesale & retail | 2020 |
| Gldys Limited | Information & communication | 2015 |
| Gleeserve Technology Ltd | Information & communication | 2020 |
| Glency Cleaning Ltd | Administrative & support | 2021 |
| Glennj Ltd | Information & communication | 2025 |
| Glevar Ltd | Wholesale & retail | 2025 |
| GLG Kular Ltd | Wholesale & retail | 2025 |
| Glint Solutions Ltd | Health & social care | 2024 |
| Global Axis Visas Consultancy Services Ltd | Other services | 2025 |
| Global Branded Distribution Ltd | Wholesale & retail | 2025 |
| Global Business & Legal Support Ltd | Administrative & support | 2023 |
| Global Care Specialist Ltd | Administrative & support | 2016 |
| Global Delivery Partners Ltd | Transport & logistics | 2021 |
| Global Essentials Limited | Wholesale & retail | 2014 |
| Global Express Money Remitttance Limited | Financial services | 2009 |
| Global Freight Ltd | Transport & logistics | 2026 |