| GEE and Hayes Limited | Other services | 2002 |
| GEE Communications Ltd | Information & communication | 2009 |
| GEE DEE Trading Limited | Wholesale & retail | 2024 |
| GEE Essentials Group Limited | Wholesale & retail | 2015 |
| GEE Management Limited | Arts & recreation | 2009 |
| GEE Property Consultants Limited | Real estate | 2019 |
| Geebell Ltd | Real estate | 2025 |
| Geek Electronic Technology Limited | Wholesale & retail | 2025 |
| Geekcrypto Limited | Construction | 2021 |
| Geeken Technology Limited | Wholesale & retail | 2025 |
| Geeks Digital Goods Ltd | Other services | 2015 |
| Geemgo Limited | Manufacturing | 2021 |
| Geena B Training Limited | Information & communication | 2014 |
| Geere Construction Ltd | Construction | 2016 |
| GEF Management & Planning Limited | Professional & scientific | 2017 |
| Geff Technical Consultancy Limited | Professional & scientific | 2016 |
| Geffmann Ltd. | Wholesale & retail | 2019 |
| Gefmasan Limited | Real estate | 2013 |
| Geist Films Ltd | Information & communication | 2018 |
| GEJ H.V Limited | Manufacturing | 2014 |
| Geko Capital Ltd | Wholesale & retail | 2021 |
| Gelar Property Limited | Real estate | 2023 |
| Gelatin Silver Productions (GSP) Ltd | Information & communication | 2023 |
| Geldards Limited | Professional & scientific | 2001 |
| Geldards LLP | | 2005 |
| Geldards Online Training Limited | Information & communication | 2017 |
| Geldards Resources Limited | Administrative & support | 2009 |
| Geldards Trust Corporation Limited | Professional & scientific | 2019 |
| Geldiyev Group Ltd | Wholesale & retail | 2024 |
| Gelert Post Production CYF. | Information & communication | 2018 |
| Gelisy Limited | Other services | 2013 |
| Gellards and Co Ltd | Households | 2016 |
| Gellaw (Ipswich Road) Limited | Real estate | 2011 |
| Gellaw (Lewis Road) Limited | Real estate | 2016 |
| Gelli Pharmacy Limited | Real estate | 2008 |
| Gelmagi Limited | Wholesale & retail | 2024 |
| Gelstory Limited | Wholesale & retail | 2020 |
| Gelt Personal Financial Services Ltd | Financial services | 2014 |
| GEM Entertainment Limited | Arts & recreation | 2015 |
| GEM International Consulting Limited | Wholesale & retail | 2024 |
| GEM Property Group Ltd | Households | 2019 |
| Gembox Jewellers Limited | Wholesale & retail | 1999 |
| Gemchem ((Building Complinace Services) Limited | Water & waste | 2023 |
| Gemestry Ltd | Wholesale & retail | 2024 |
| Gemia Official Ltd | Other services | 2025 |
| Gemini Business Consulting Ltd | Extraterritorial | 2021 |
| Gemini Hair and Beauty Limited | Other services | 2020 |
| Gemini OAR Ltd | Real estate | 2025 |
| Gemini Property Management Ltd | Real estate | 2019 |
| Geminii Homes Limited | Construction | 2017 |
| Geminijobs Ltd | Administrative & support | 2025 |
| Gemm International Ltd | Administrative & support | 2018 |
| Gemma Livingston Holdings Limited | Financial services | 2018 |
| Gemma Zimmerhansl Interior Design Limited | Professional & scientific | 2009 |
| GEMOLOGY1 Ltd | Mining & quarrying | 2021 |
| Gems Marketplace Limited | Wholesale & retail | 2024 |
| GEN Social Limited | Professional & scientific | 2019 |
| GEN Z Holdings Limited | Construction | 2020 |
| Gen-App Ltd | Wholesale & retail | 2025 |
| Genatsvale Ltd | Hospitality | 2024 |
| Genbioca Limited | Information & communication | 2022 |
| Gencircleai Ltd | Extraterritorial | 2024 |
| Gendra Pharma Ltd | Wholesale & retail | 2023 |
| Genea Marketing Ltd | Wholesale & retail | 2025 |
| General 21 Ltd | Wholesale & retail | 2021 |
| General Acquisitions Limited | Professional & scientific | 2004 |
| General Commercial Properties Limited | Financial services | 1991 |
| General Communications Fixed LLP | | 2016 |
| General Communications U.K. Limited | Wholesale & retail | 2002 |
| General Engineering Services Limited | Professional & scientific | 1982 |
| General Services London Ltd | Transport & logistics | 2016 |
| General Trading Contracting and Investment (Gtci) UK Ltd | Wholesale & retail | 2025 |
| Generalsure Limited | Wholesale & retail | 2024 |
| Generation World Ltd | Professional & scientific | 2022 |
| Generational Impact Ltd | Wholesale & retail | 2026 |
| Generationztech Limited | Information & communication | 2023 |
| Generro Ltd | Administrative & support | 2021 |
| Genesis 1 Technologies Ltd | Other services | 2020 |
| Genesis Biosciences Limited | Professional & scientific | 2006 |
| Genesis City Ltd | Real estate | 2014 |
| Genesis Commercial & Industrial Cleaning Ltd | Administrative & support | 2015 |
| Genesis Construction & Maintenance Ltd | Construction | 2024 |
| Genesys Technology Limited | Construction | 2018 |
| Geneva Group Finance Ltd | Wholesale & retail | 2022 |
| Geneva Trade Limited | Wholesale & retail | 2018 |
| Genewell Medical Technology Limited | Wholesale & retail | 2022 |
| Genexes Limited | Information & communication | 2025 |
| Genie Industries Ltd | Wholesale & retail | 2019 |
| Genium Technology Limited | Information & communication | 2026 |
| Genius Finance Limited | Administrative & support | 2017 |
| Genius Greens Ltd. | Administrative & support | 2015 |
| Genius Hub Limited | Hospitality | 2016 |
| Genius Pond Public Limited | Information & communication | 2019 |
| Genletics Ltd. | Professional & scientific | 2021 |
| Genmed Enterprises International Ltd | Manufacturing | 2020 |
| Genmed Enterprises UK Ltd | Manufacturing | 2017 |
| Genoa PLC Crypto Ltd | Financial services | 2021 |
| Genomeclinic Ltd | Health & social care | 2014 |
| Genshop Ltd | Wholesale & retail | 2025 |
| Gentile & Elliot Properties Ltd | Real estate | 2026 |