| GHR MCR Ltd | Hospitality | 2025 |
| GHS Retail Limited | Wholesale & retail | 2012 |
| Ghsg Ltd | Wholesale & retail | 2019 |
| GHT Homes Ltd | Real estate | 2026 |
| Ghuiom AL MAS for Investment Ltd | Construction | 2025 |
| Ghulam Farooq Hayat Muhammad Ltd | Other services | 2024 |
| Ghulam Khan Wholesaler and Distributer Ltd | Wholesale & retail | 2017 |
| Ghulam Muhammad and Partner for Trading Ltd | Wholesale & retail | 2023 |
| Ghulam Sabir Ltd | Wholesale & retail | 2026 |
| Ghumukkad Limited | Administrative & support | 2026 |
| Ghurfan ALI Jutt Ltd | Wholesale & retail | 2025 |
| Ghxxxsted Ltd | Wholesale & retail | 2025 |
| GI Housing Ltd | Real estate | 2026 |
| GI Properties MCR Limited | Real estate | 2024 |
| Giaan Ltd | Professional & scientific | 2018 |
| Giaba Media Ltd | Wholesale & retail | 2021 |
| Gialinde Marine Limited | Administrative & support | 2007 |
| Giant a V Limited | Administrative & support | 2005 |
| Giant Bargains Ltd | Wholesale & retail | 2026 |
| Giant Global Logistics Limited | Transport & logistics | 2019 |
| Giant Hospitality Limited | Hospitality | 2015 |
| Giant International Logistics Ltd | Transport & logistics | 2025 |
| Giant Leap Collective Ltd | Information & communication | 2023 |
| Giant Market Ltd | Wholesale & retail | 2025 |
| Giant Team Ltd | Wholesale & retail | 2025 |
| Giants ANB Limited | Real estate | 2023 |
| Giants Properties Limited | Financial services | 2024 |
| Giants Seat Garden Centre Limited | Wholesale & retail | 2025 |
| Giantswood Grove (Congleton) Management Company Limited | Households | 2021 |
| Giara Beauty Limited | Other services | 2023 |
| Giari Care Ltd | Health & social care | 2024 |
| Gibbons Gibbons Property Services Limited | Real estate | 2022 |
| Gibbons Ltd | Administrative & support | 2019 |
| Gibbons Plant Hire Limited | Transport & logistics | 2011 |
| Gibfield Garage Limited | Wholesale & retail | 2000 |
| Giblyn Ltd | Hospitality | 2017 |
| Gibson Controls Limited | Manufacturing | 1999 |
| Gibson Elliott Properties Limited | Real estate | 2022 |
| Gibson Hollyhomes Holding Limited | Financial services | 2021 |
| Gibson Hollyhomes Limited | Administrative & support | 2007 |
| Gibson House (Wirral) Limited | Construction | 2017 |
| Gibson's Recycled Auto Parts Ltd | Wholesale & retail | 2018 |
| GIC Building Limited | Construction | 2023 |
| Gicaw Properties Ltd | Real estate | 2024 |
| Giddy Goat Toys Limited | Wholesale & retail | 2012 |
| Gideon Kasler & Associates LLP | | 2012 |
| Gideonman Ltd | Wholesale & retail | 2025 |
| Gidi Love Limited | Other services | 2020 |
| Gidisquare Limited | Wholesale & retail | 2024 |
| Giedraitis Transport Ltd | Transport & logistics | 2016 |
| Gifford Dixon Limited | Professional & scientific | 2013 |
| Giffy.World Ltd | Information & communication | 2024 |
| Gifme UK Ltd | Wholesale & retail | 2015 |
| Gift & Balloon Lounge Ltd | Wholesale & retail | 2024 |
| Gift Save UK Ltd | Wholesale & retail | 2022 |
| Gift Services Ltd | Administrative & support | 2025 |
| Gift Support Care Ltd | Administrative & support | 2021 |
| GIFT2DOOR Ltd | Wholesale & retail | 2025 |
| Giftbox Ltd | Wholesale & retail | 2025 |
| Gifted Arm's Ltd | Other services | 2018 |
| Gifted Services Ltd | Professional & scientific | 2022 |
| Giftedby Limited | Wholesale & retail | 2020 |
| Giftorama Ltd | Wholesale & retail | 2017 |
| Giftrix Ltd | Wholesale & retail | 2025 |
| Gifts & Gifts Ltd | Wholesale & retail | 2025 |
| Gifts in Time Limited | Wholesale & retail | 2012 |
| GIFTS4U Ltd | Wholesale & retail | 2025 |
| Gifttrees Partners Limited | Professional & scientific | 2014 |
| Gifty Vibess Ltd | Wholesale & retail | 2025 |
| Gifwait Ltd | Wholesale & retail | 2023 |
| GIG Marketing PVT Limited | Wholesale & retail | 2013 |
| GIG Networks Limited | Information & communication | 2018 |
| GIG U.K. Ltd | Health & social care | 2024 |
| GIG Wholesale Ltd | Wholesale & retail | 2016 |
| Giga Cube Solutions Limited | Information & communication | 2023 |
| Giga House Electronics Ltd | Wholesale & retail | 2025 |
| Gigabyte Holdings Limited | Information & communication | 2026 |
| Gigacycle Ltd | Water & waste | 2013 |
| Gigadav Go Collection Limited | Transport & logistics | 2025 |
| Gigahearts Limited | Manufacturing | 2025 |
| Gigasbc Limited | Information & communication | 2023 |
| Gigazing Limited | Professional & scientific | 2004 |
| Gigglepops Ltd | Extraterritorial | 2025 |
| Giggles & Grinss Ltd | Health & social care | 2025 |
| Gigglesglamourparties Ltd | Other services | 2026 |
| Gighammer Ltd | Information & communication | 2026 |
| Gigi's Hospitality Limited | Professional & scientific | 2024 |
| Gigi's Skin LAB Limited | Other services | 2025 |
| Gigify Limited | Information & communication | 2025 |
| Gigil Europe Limited | Wholesale & retail | 2017 |
| Gigis Coffee Shop Limited | Hospitality | 2024 |
| Gigpig Ltd | Arts & recreation | 2022 |
| Gigrep Limited | Arts & recreation | 2015 |
| Gigwc Ltd | Real estate | 2025 |
| Gilani for International Trading Ltd | Wholesale & retail | 2024 |
| Gilbert Management Limited | Professional & scientific | 2026 |
| Gilbuild Ltd | Hospitality | 2026 |
| Gilby Homes Ltd | Real estate | 2015 |
| Gilchrist Builders Limited | Construction | 2020 |
| Gilchrist Electrical Solutions Ltd | Construction | 2026 |