| GKN Aerospace (FFT) Limited | Birmingham | 1939 |
| GKN Aerospace Transparency Systems (Luton) Limited | Birmingham | 1993 |
| GKN Birfield Extrusions Limited | London | 1964 |
| GKN Bound Brook Limited | Birmingham | 1960 |
| GKN Building Services Europe Limited | Birmingham | 1964 |
| GKN Cedu Limited | Birmingham | 1939 |
| GKN Composites Limited | Birmingham | 1937 |
| GKN Computer Services Limited | Birmingham | 1925 |
| GKN Defence Holdings Limited | Birmingham | 1938 |
| GKN Defence Limited | Birmingham | 1958 |
| GKN Export Services Limited | Birmingham | 1947 |
| GKN Fasteners Limited | Birmingham | 1982 |
| GKN Finance (UK) Limited | Birmingham | 1945 |
| GKN Hardy Spicer Limited | Birmingham | 1922 |
| GKN Overseas Holdings Limited | London | 1951 |
| GKN Pistons Limited | Birmingham | 1929 |
| GKN Quest Trustee Limited | Birmingham | 1997 |
| GKN Sankey Finance Limited | Birmingham | 1964 |
| GKN Service UK Limited | London | 1957 |
| GKN Sheepbridge Limited | London | 1942 |
| GKN Sheepbridge Stokes Limited | London | 1933 |
| GKN Sinter Metals Limited | London | 1944 |
| GKN Technology Limited | Birmingham | 1965 |
| GKN Trading Limited | Birmingham | 1898 |
| GKN UK Investments Limited | London | 1922 |
| GKN Westland Aerospace (Avonmouth) Limited | Birmingham | 1938 |
| GKN Westland Aerospace Advanced Materials Limited | Birmingham | 1972 |
| GKN Westland Aerospace Aviation Support Limited | Birmingham | 1984 |
| GKN Westland Aerospace Holdings Limited | Birmingham | 1908 |
| GKN Westland Design Services Limited | Birmingham | 1987 |
| GKN Westland Limited | Birmingham | 1920 |
| GKN Westland Overseas Holdings Limited | Birmingham | 1987 |
| GKN Westland Services Limited | Birmingham | 1949 |
| Gkpj Group Limited | Clacton-On-Sea | 2021 |
| GKS Building Consultancy Ltd | Harpenden | 2022 |
| GKS Management Ltd | Peterborough | 2024 |
| GL & MW Investments Limited | Aberdeen | 2024 |
| GL Africa Energy (Holdings) Limited | London | 2013 |
| GL Africa Power Limited | London | 2013 |
| GL and Pedi Ltd | London | 2024 |
| GL Commerce Ltd | Watford | 2024 |
| GL Commercial Group Ltd | Usk | 2018 |
| GL Digicon Ltd | Northampton | 2022 |
| GL Lewisham Gateway Management Limited | London | 2020 |
| GL Platinum Ltd | Leigh-On-Sea | 2022 |
| GL Premium Ltd | London | 2022 |
| Gl-Seo Ltd | London | 2003 |
| GLA Energy Holdings Limited | London | 2013 |
| Glaccess Yachting Ltd | London | 2025 |
| Glacier IT Solutions Ltd | Leigh-On-Sea | 2016 |
| Glacier Nomad Capital Ltd | Manchester | 2025 |
| Glacier Point Business Solutions Ltd | Manchester | 2026 |
| Glacier Vehicles Limited | Brighton | 2009 |
| Glade Close 1956 Limited | Basingstoke | 2015 |
| Gladematch Limited | Colindale | 2008 |
| Gladeside Properties Limited | | 1989 |
| Gladesmore Housing Limited | London | 2020 |
| Gladius Divitas Ltd | London | 2022 |
| Gladpower Limited | Newbury | 1997 |
| Gladstone Road Exeter Limited | Bangor | 2019 |
| Glafki Marine Limited | London | 2009 |
| Glaina Holdings Ltd | London | 2023 |
| Glaize Ltd | London | 2026 |
| Glakron Limited | Belfast | 1971 |
| Glam London Limited | Bexley | 2016 |
| Glamdesire Spa Ltd. | Norwich | 2019 |
| Glamford Building Company Limited | York | 1957 |
| Glamis Road 1965 Limited | Leyland | 2014 |
| Glamorgan Vale Retail Park Nominee NO. 1 Limited | London | 2006 |
| Glamorgan Vale Retail Park Nominee NO. 2 Limited | London | 2006 |
| Glamorous Junk Limited | Worcester | 2011 |
| Glamorous Property Solutions Ltd | Salford | 2022 |
| Glamour International Investment UK Limited | Stafford | 2018 |
| Glamour Rocks Limited | Leeds | 2013 |
| Glamour Trading Ltd | Bromley | 2014 |
| Glamping Equipment and Accessory Rental Ltd | London | 2023 |
| Glamping Hideaways Limited | Newmarket | 2019 |
| Glampingvillage Ltd | London | 2015 |
| Glamplands Ltd | Weymouth | 2022 |
| Glampora Limited | Beckenham | 2025 |
| Glan Father&Son Winery Group Co., Ltd | Beckenham | 2025 |
| Glance Intimate Limited | London | 2019 |
| Gland Homeware Co., Ltd | Beckenham | 2015 |
| Glandore Apartments Management Company Limited | Newcastle | 2004 |
| Glandover Limited | Eltham | 1993 |
| Glangevlin Freehold Limited | Greenford | 2016 |
| Glar Consulting Ltd | London | 2021 |
| Glasdir Management Company Limited | High Wycombe | 2008 |
| Glasdon Designs Limited | Blackpool | 2000 |
| Glasdon Manufacturing Limited | Blackpool | 1987 |
| Glasford Street Management Limited | London | 2003 |
| Glasgo Cabs Ltd | Glasgow | 2021 |
| Glasgo Cars Ltd | Glasgow | 2021 |
| Glasgo Taxis Ltd | Glasgow | 2021 |
| Glasgow Assets Limited | Salford | 2021 |
| Glasgow Box Office Limited | Glasgow | 1999 |
| Glasgow Builds Ltd | Glasgow | 2007 |
| Glasgow Business School Limited | Glasgow | 1998 |
| Glasgow Corporation Limited | Glasgow | 2007 |
| Glasgow Diamond Cleaners Ltd | Paisley | 2021 |