| GK Walsgrave Limited | Hospitality | 2022 |
| GK1 Ltd | Real estate | 2009 |
| GKA Grandsons Limited | Financial services | 2021 |
| GKC Building Services Limited | Construction | 2003 |
| GKD Gibbons Ltd | Wholesale & retail | 2015 |
| GKG Consultancy (Birmingham) Limited | Professional & scientific | 2016 |
| GKH Energy Soloutions Ltd | Construction | 2025 |
| GKI Engineering Ltd | Professional & scientific | 2022 |
| GKI Music Ltd | Education | 2025 |
| GKK Consultancy Limited | Health & social care | 2024 |
| GKK Estates Ltd | Real estate | 2025 |
| Gkkm Consultancy Limited | Information & communication | 2026 |
| GKN 1 Trustee 2018 Limited | Extraterritorial | 2018 |
| GKN 4 Trustee 2018 Limited | Extraterritorial | 2018 |
| GKN Aerospace (FFT) Limited | Extraterritorial | 1939 |
| GKN Aerospace Civil Services Holdings Limited | Manufacturing | 2020 |
| GKN Aerospace Civil Services Limited | Manufacturing | 2020 |
| GKN Aerospace Holdings Limited | Manufacturing | 2019 |
| GKN Aerospace Limited | Professional & scientific | 2012 |
| GKN Aerospace Services Limited | Manufacturing | 1939 |
| GKN Aerospace Transparency Systems (Kings Norton) Limited | Professional & scientific | 1986 |
| GKN Aerospace Transparency Systems (Luton) Limited | Extraterritorial | 1993 |
| GKN Automotive Limited | Professional & scientific | 1891 |
| GKN Bound Brook Limited | Extraterritorial | 1960 |
| GKN Building Services Europe Limited | Extraterritorial | 1964 |
| GKN Cedu Limited | Extraterritorial | 1939 |
| GKN Composites Limited | Extraterritorial | 1937 |
| GKN Computer Services Limited | Extraterritorial | 1925 |
| GKN Cylinder Liners UK Limited | Professional & scientific | 2020 |
| GKN Defence Holdings Limited | Extraterritorial | 1938 |
| GKN Defence Limited | Extraterritorial | 1958 |
| GKN Driveline UK Limited | Professional & scientific | 2017 |
| GKN Enterprise Limited | Professional & scientific | 1970 |
| GKN EVO Edrive Systems Limited | Professional & scientific | 2011 |
| GKN Export Services Limited | Extraterritorial | 1947 |
| GKN Fasteners Limited | Extraterritorial | 1982 |
| GKN Finance (UK) Limited | Extraterritorial | 1945 |
| GKN Freight Services Limited | Transport & logistics | 1898 |
| GKN Hardy Spicer Limited | Extraterritorial | 1922 |
| GKN Holdings Limited | Professional & scientific | 1900 |
| GKN Hybrid Power Limited | Professional & scientific | 2006 |
| GKN Limited | Manufacturing | 2001 |
| GKN Pistons Limited | Extraterritorial | 1929 |
| GKN Quest Trustee Limited | Extraterritorial | 1997 |
| GKN Sankey Finance Limited | Extraterritorial | 1964 |
| GKN SEK Investments Limited | Professional & scientific | 1972 |
| GKN Technology Limited | Extraterritorial | 1965 |
| GKN Trading Limited | Extraterritorial | 1898 |
| GKN Westland Aerospace (Avonmouth) Limited | Extraterritorial | 1938 |
| GKN Westland Aerospace Advanced Materials Limited | Extraterritorial | 1972 |
| GKN Westland Aerospace Aviation Support Limited | Extraterritorial | 1984 |
| GKN Westland Aerospace Holdings Limited | Extraterritorial | 1908 |
| GKN Westland Design Services Limited | Extraterritorial | 1987 |
| GKN Westland Limited | Extraterritorial | 1920 |
| GKN Westland Overseas Holdings Limited | Extraterritorial | 1987 |
| GKN Westland Services Limited | Extraterritorial | 1949 |
| GKP Bham Limited | Wholesale & retail | 2023 |
| Gkrr Homes Ltd | Real estate | 2017 |
| GKX Limited | Wholesale & retail | 2021 |
| GL Cars Ontime Ltd | Administrative & support | 2025 |
| GL Contractors Ltd | Manufacturing | 2012 |
| GL Investment Holdings Limited | Financial services | 2015 |
| GL Lifestyle Group Ltd | Wholesale & retail | 2021 |
| GL1 Construction Limited | Construction | 2025 |
| GLA Autos Ltd | Wholesale & retail | 2019 |
| Glacier Pharmaceuticals Limited | Wholesale & retail | 2025 |
| Glad N Glam Ltd | Other services | 2022 |
| Glade Associates Quantity Surveying Ltd | Professional & scientific | 2010 |
| Gladiator Workforce Limited | Administrative & support | 2026 |
| Gladius Associates Limited | Professional & scientific | 2002 |
| Gladius CC Ltd | Real estate | 2018 |
| Gladstone Dwellings Limited | Real estate | 2019 |
| Gladstone ST (Liverpool) Ltd | Real estate | 2022 |
| Glaisdale Limited | Real estate | 1993 |
| Glaisdale Studio Ltd | Real estate | 2018 |
| Glam & Glow Boutique Ltd | Other services | 2022 |
| Glam by Saba Ltd | Other services | 2019 |
| Glam Tones Ltd | Wholesale & retail | 2025 |
| Glamcampos Limited | Administrative & support | 2025 |
| Glamors Essentials Ltd | Wholesale & retail | 2026 |
| Glamour Doll Hair & Beauty Ltd | Other services | 2018 |
| Glamour Grooming Ltd | Other services | 2026 |
| Glamour Hair and Cosmetics Limited | Wholesale & retail | 2017 |
| Glamour House Ltd | Wholesale & retail | 2026 |
| Glamour TEK AG Ltd | Wholesale & retail | 2026 |
| Glamour Touch Ltd | Real estate | 2019 |
| Glamoureyezz Ltd | Wholesale & retail | 2013 |
| Glamping Fields Limited | Hospitality | 2017 |
| Glamping Limited | Hospitality | 2013 |
| Glampod Park Ltd | Hospitality | 2021 |
| Glamrose Limited | Wholesale & retail | 2024 |
| Glanafon Management Limited | Households | 1988 |
| Glancestyle Holdings Limited | Professional & scientific | 2005 |
| Glancy Nicholls Architects Limited | Professional & scientific | 2004 |
| Glancy Nicholls Holdings Limited | Professional & scientific | 2019 |
| Glanik Healthcare Solutions (GHS) Ltd | Education | 2022 |
| Glann Healthcare Services Ltd | Health & social care | 2019 |
| Glasfit UK Limited | Manufacturing | 2004 |
| Glasgow Venture 1 Ltd | Hospitality | 2023 |
| Glasgow Venture 2 Ltd | Hospitality | 2023 |