| Ginns & Gutteridge Limited | Sutton Coldfield | 1951 |
| Gino Tyndall Limited | Poulton-Le-Fylde | 2022 |
| Ginography Limited | Colchester | 2023 |
| Ginsters Limited | Melton Mowbray | 1967 |
| Gintel Building Services Limited | Diss | 2006 |
| Gintsys Limited | London | 1989 |
| Ginverdon Ltd | Salford | 2005 |
| Ginway UK Limited | Kington | 2012 |
| Giodinodolf 1898 Ltd | Northallerton | 2009 |
| Gion Limited | London | 2024 |
| Gipsy Ltd | Harrogate | 2020 |
| Girach Ltd | Gravesend | 2025 |
| Giraffe Boutique Limited | Telford | 2015 |
| Giraffe Hampers Limited | Telford | 2020 |
| Girandole London Limited | York | 2025 |
| Giratina Investments Ltd | London | 2024 |
| Girdleness Road 1968 Limited | Aberdeen | 2014 |
| Girdlestone Pumps Limited | Glasgow | 2007 |
| Giriip International Co., Ltd | London | 2024 |
| Girl Friday Business Solutions Ltd | Sale | 2024 |
| Girl in Blue London Ltd | London | 2018 |
| Girl in Blue Ltd | London | 2018 |
| Girl Squad Ltd | London | 2026 |
| Girling Holdings Ltd | Birmingham | 2023 |
| Girling Limited | Solihull | 1965 |
| Girling Property Ltd | Birmingham | 2023 |
| Girlondon Ltd | Sherborne | 2014 |
| Girmatsion Limited | London | 2021 |
| Girn Limited | Slough | 2022 |
| Girne American Limited | South Croydon | 2022 |
| Girne American UNI Limited | South Croydon | 2022 |
| Girne Uluslararasi Universitesi Limited | South Croydon | 2016 |
| Girne Universite Limited | South Croydon | 2016 |
| Girne Universitesi (Ingiltere) Limited | Croydon | 2016 |
| Girne Universitesi (Kuzey Kibris) Limited | South Croydon | 2016 |
| Girne Universitesi Limited | South Croydon | 2017 |
| Giro Durham Limited | Bury St. Edmunds | 2019 |
| Giro Trading Ltd. | Marlow | 1994 |
| Girona Developments Limited | Belfast | 2002 |
| Girvan Taxis Limited | Cowdenbeath | 2025 |
| GIS247 Ltd | Radcliffe-On-Trent | 2009 |
| Gisa Properties Ltd | Merthyr Tydfil | 2023 |
| Gisela Graham Home Limited | London | 2021 |
| Gisiko Ltd | London | 2024 |
| Gisl Limited | London | 2022 |
| Gissing F.E. Ltd | Cleethorpes | 2014 |
| Gissing Ltd | Brigg | 2022 |
| Gitana Marine Limited | London | 2024 |
| Giti Tire Holdings (UK) Limited | Northwich | 2014 |
| Gitsam Limited | Salford | 2003 |
| Gius Ltd | Halifax | 2020 |
| Giuseppe Lunghi Limited | Oxted | 2003 |
| Givaudan Quest Pension Admin Limited | Ashford | 2025 |
| Give Five Feathers Limited | Bexhill On Sea | 2011 |
| Give ME House Limited | London | 2017 |
| Give ME Space Storage Limited | Bourne | 2019 |
| Give Yourself Motivation Limited | Skipton | 2022 |
| Giveafew | London | 2019 |
| Giveall Payment Services Limited | West Byfleet | 2010 |
| Givey Foundation | London | 2021 |
| Giving AID Limited | Tiverton | 2013 |
| Giving Europe Limited | Braintree | 2010 |
| Gizmo Bars Ltd | Chelmsford | 2024 |
| Gizmo Foods Limited | Glasgow | 2021 |
| Gizmos and Gadgets Ltd | Lutterworth | 2015 |
| GJ Hubbard Construction Services Ltd. | Great Yarmouth | 2008 |
| GJ Ltd | Newmarket | 2023 |
| GJ Shaw Ltd | Wilmslow | 2019 |
| GJ Wedding Industry Ltd | London | 2016 |
| GJA Consult Ltd | Ferndown | 2024 |
| Gjack Contractors Ltd | Glasgow | 2025 |
| GJB Granmill Ltd | Leeds | 2017 |
| GJB Harnley Ltd | Leeds | 2017 |
| GJB Sand Mile Ltd | Leeds | 2017 |
| GJB1975 Ltd | London | 2024 |
| Gjervika Alltjenst Limited | London | 2018 |
| GJF Accountancy Services Limited | Bedford | 2021 |
| GJG Financial Consultants Ltd | Derby | 2016 |
| GJJ Services Ltd | Hailsham | 2013 |
| Gjjm (GM) Consulting Limited | Edgware | 2020 |
| Gjose LYD Invest Limited | London | 2022 |
| Gjose LYD Limited | London | 2022 |
| GJR International Management Ltd | Glossop | 2016 |
| GJS Retail Limited | Glasgow | 2010 |
| GK Data Limited | Ascot | 2023 |
| GK Holdings Ltd | Haslemere | 2015 |
| GK Investments Inc. Ltd. | London | 2019 |
| GK Locums Limited | Aberdeen | 2018 |
| GK Nominees Limited | Weston-Super-Mare | 2020 |
| GKA (London) Limited | London | 2018 |
| GKD Developments Limited | Northamptonshire | 2006 |
| GKD Solutions Ltd | Wimborne | 2015 |
| GKF Developments Limited | Leeds | 2025 |
| GKF Nominees One Limited | Poole | 2012 |
| Gkjv Ltd | London | 2017 |
| GKM Solutions Limited | Stirling | 2008 |
| GKN 1 Trustee 2018 Limited | Birmingham | 2018 |
| GKN 2 Trustee 2024 Limited | London | 2024 |
| GKN 3 Trustee 2024 Limited | London | 2024 |
| GKN 4 Trustee 2018 Limited | Birmingham | 2018 |