| Geelink Limited | Professional & scientific | 2016 |
| Geemal Resourcing Ltd | Administrative & support | 2014 |
| Geemore Limited | Real estate | 2018 |
| Geenie Limited | Wholesale & retail | 2021 |
| Geep Education Ltd | Education | 2025 |
| Gees Properties (Salford) Limited | Real estate | 1978 |
| Geese Productions Ltd | Information & communication | 2021 |
| Geestar Glass Limited | Construction | 2018 |
| Geestar Touring Ltd | Arts & recreation | 2019 |
| Geevee Enterprises Limited | Agriculture & fishing | 1997 |
| Geexgees Ltd | Hospitality | 2025 |
| GEF R&D Ltd | Professional & scientific | 2026 |
| GEF Re-Cycling (Swansea) Ltd | Water & waste | 2026 |
| Gefen Foundation | Other services | 2004 |
| Gefen Management Ltd | Real estate | 2005 |
| Gefferie Limited | Professional & scientific | 2019 |
| Gehani Associates Ltd | Health & social care | 2018 |
| Gehood Ltd | Manufacturing | 2011 |
| Geipel Brewing Limited | Manufacturing | 2011 |
| Geistlich Sons Limited | Wholesale & retail | 1960 |
| Geistreichfinanzfrei Ltd | Extraterritorial | 2023 |
| GEK Estates Ltd | Real estate | 2024 |
| GEL Industries Limited | Professional & scientific | 2025 |
| GEL Plates Ltd | Manufacturing | 2017 |
| Gelato Cakes Limited | Hospitality | 2025 |
| Gelato Games Ltd | Information & communication | 2017 |
| Gelato LAB Limited | Manufacturing | 2025 |
| Gelato UK Limited | Wholesale & retail | 2017 |
| Gelato Visual Effects Limited | Information & communication | 2015 |
| Gelbergs LLP | | 2007 |
| Gelco Properties Limited | Real estate | 2014 |
| Gelcoatz Ltd | Wholesale & retail | 2025 |
| Geldart Properties (Appleton) Limited | Real estate | 2001 |
| Gelinas Ltd | Administrative & support | 2023 |
| Gelmac Homes Ltd | Real estate | 2012 |
| Gelmane Investments Limited | Real estate | 1954 |
| GEM & Jade’S Happy Days Ltd | Other services | 2019 |
| GEM Associates Limited | Professional & scientific | 2002 |
| GEM DEG Ltd | Information & communication | 2022 |
| GEM Everest Ltd | Professional & scientific | 2026 |
| GEM Heritage UK Ltd | Administrative & support | 2006 |
| GEM International UK Limited | Administrative & support | 2001 |
| GEM Irfan Limited | Wholesale & retail | 2025 |
| GEM Mart Ltd | Wholesale & retail | 2026 |
| GEM OT Ltd | Public administration | 2026 |
| GEM Radiology Limited | Professional & scientific | 2024 |
| GEM Rush Ltd | Wholesale & retail | 2020 |
| GEM Security Executives Limited | Administrative & support | 2024 |
| GEM22 Solutions Ltd | Health & social care | 2022 |
| Gemach Ltd | Other services | 2003 |
| Gembroidery Limited | Wholesale & retail | 2012 |
| Gemcal Limited | Information & communication | 2011 |
| Gemdeals Ltd | Wholesale & retail | 2025 |
| Gemei Network Ltd | Information & communication | 2021 |
| Gemex Trading Ltd | Wholesale & retail | 2024 |
| Gemfix Ltd | Wholesale & retail | 2025 |
| Gemin-Eye Ltd | Other services | 2014 |
| Gemini 42 Productions Limited | Information & communication | 2022 |
| Gemini 7 Properties Ltd | Real estate | 2020 |
| Gemini 8 Properties Ltd | Real estate | 2017 |
| Gemini Admissions Ltd | Education | 2026 |
| Gemini Architectural Limited | Manufacturing | 2002 |
| Gemini Ascend Limited | Wholesale & retail | 2025 |
| Gemini Auto Locksmiths Ltd | Wholesale & retail | 2022 |
| Gemini Books Midco Limited | Extraterritorial | 2026 |
| Gemini Capital Management Limited | Financial services | 2011 |
| Gemini Coffee Bars Limited | Hospitality | 2018 |
| Gemini Collect Ltd | Administrative & support | 2021 |
| Gemini Cube Limited | Professional & scientific | 2025 |
| Gemini Medical Holdings Ltd | Health & social care | 2016 |
| Gemini PIL Limited | Real estate | 2022 |
| Gemini Prestige Detailing Ltd | Administrative & support | 2026 |
| Gemini Salt Extraction Ltd | Mining & quarrying | 2026 |
| Gemini SEO Limited | Professional & scientific | 2024 |
| Gemini Tracks Ltd | Wholesale & retail | 2024 |
| Gemini U.P.V.C. Limited | Manufacturing | 1985 |
| Gemma Clews Golf Ltd | Other services | 2017 |
| Gemma Cowburn PR Ltd | Professional & scientific | 2023 |
| Gemma GOW Limited | Hospitality | 2026 |
| Gempire (MCR) Limited | Wholesale & retail | 2016 |
| Gemsfield Limited | Education | 2024 |
| Gemshaw Limited | Real estate | 2018 |
| Gemsi Car Sales Limited | Wholesale & retail | 2025 |
| Gemslee Limited | Wholesale & retail | 2011 |
| Gemstone Boutique Ltd | Wholesale & retail | 2015 |
| Gemstone Direct Limited | Real estate | 2020 |
| Gemstone Gifts Ltd | Wholesale & retail | 2020 |
| Gemyni Cleaning Ltd | Households | 2007 |
| GEN Business Services Limited | Professional & scientific | 2010 |
| GEN Property Management Ltd | Real estate | 2022 |
| GEN SEE UK Ltd | Wholesale & retail | 2026 |
| GEN Z Motors Ltd | Wholesale & retail | 2024 |
| GEN2 Neuroscience Ltd | Professional & scientific | 2016 |
| Gencarefront Limited | Wholesale & retail | 2022 |
| Gencomp (NO.5) Limited | Information & communication | 2011 |
| Genderbliss International Ltd | Extraterritorial | 2023 |
| GENE23 Limited | Wholesale & retail | 2024 |
| Genebridges Limited | Professional & scientific | 2013 |
| Genedrive Diagnostics Ltd | Professional & scientific | 2000 |
| Genedrive PLC | Professional & scientific | 2007 |