| Girlsaway Ltd | Administrative & support | 2025 |
| Gisborne (Winchester) Limited | Construction | 2021 |
| Gisko Limited | Professional & scientific | 2024 |
| Gisser Ltd | Wholesale & retail | 2020 |
| Gita Joshi Limited | Health & social care | 2022 |
| Giuseppe on the Steps Limited | Hospitality | 2010 |
| Giusto Provenzano Limited | Professional & scientific | 2015 |
| Gizmo Craze Ltd | Wholesale & retail | 2025 |
| GJ Telecom Solutions Ltd | Information & communication | 2015 |
| GJB Engineering & Consulting Ltd | Construction | 2025 |
| GJB Motorcycles Ltd | Wholesale & retail | 2021 |
| GJC Commercials Limited | Wholesale & retail | 2002 |
| GJD Holdings Limited | Financial services | 2016 |
| Gjferrer Limited | Health & social care | 2025 |
| Gjgg Property Development Ltd | Real estate | 2025 |
| GJL Properties Limited | Real estate | 2025 |
| Gjla Limited | Real estate | 2023 |
| GJM Trading Limited | Wholesale & retail | 2003 |
| Gjmedia Limited | Information & communication | 2016 |
| GJN Services Limited | Professional & scientific | 2018 |
| GJP Holdings Limited | Financial services | 2005 |
| GJR Painting & Decorating Limited | Construction | 2026 |
| GJS Landscapes Limited | Administrative & support | 2012 |
| GK Catering & Hospitality Ltd | Hospitality | 2024 |
| GK Investments (South West) Limited | Professional & scientific | 2023 |
| GK Labs Limited | Manufacturing | 2022 |
| GK Properties (South West) Limited | Real estate | 2019 |
| Gkjed Properties Ltd | Real estate | 2019 |
| GKV Estate Ltd | Real estate | 2025 |
| GL D Services Limited | Health & social care | 2022 |
| GL Fast Transport Ltd | Transport & logistics | 2022 |
| GL Integrity Financial Planning Ltd | Financial services | 2006 |
| GL Properties Bristol Ltd | Real estate | 2024 |
| GL9CLUB Limited | Arts & recreation | 2025 |
| Glacier Group Ltd | Financial services | 2020 |
| Glacier Point Developments Ltd | Real estate | 2022 |
| Glade Ecology Ltd | Professional & scientific | 2023 |
| Glade Green Ltd | Construction | 2025 |
| Gladekirk Limited | Construction | 1984 |
| Gladsmuir Holdings Limited | Energy | 2025 |
| Gladsmuir Resource Recovery Limited | Energy | 2025 |
| Gladstone Associates Limited | Professional & scientific | 2003 |
| Gladstone Enterprises Ltd | Real estate | 2026 |
| Gladstone UK Holdings Ltd | Real estate | 2025 |
| Gladstone UK Investment Limited | Real estate | 2022 |
| Gladstonian Company Limited | Real estate | 2019 |
| Gladwill Limited | Real estate | 2018 |
| Gladwin Electrical Services Limited | Construction | 2014 |
| Gladys Swan Ltd | Arts & recreation | 2025 |
| Glaia Ltd | Professional & scientific | 2019 |
| Glam & Glitz Ltd | Other services | 2018 |
| Glam Inc Limited | Other services | 2023 |
| Glam IT Ltd | Other services | 2022 |
| Glamorous Coventry Limited | Hospitality | 2026 |
| Glamorous Oxford Limited | Hospitality | 2026 |
| Glanfield Davis Holdings Limited | Real estate | 2017 |
| Glanso Holdings Limited | Health & social care | 2017 |
| Glanso UK Limited | Health & social care | 2019 |
| Glaring Way Ltd | Administrative & support | 2020 |
| Glass Angels Ltd | Wholesale & retail | 2025 |
| Glass Boat Co. Ltd.(The) | Hospitality | 1985 |
| Glass Consultants UK Ltd | Construction | 2007 |
| Glass Door Design Tech Ltd | Information & communication | 2024 |
| Glass Extensions Design and Build Ltd | Construction | 2023 |
| Glass Plus Ltd | Extraterritorial | 2021 |
| Glass Wharf Management Company Limited | Other services | 2010 |
| Glasshouse Events & Records Ltd | Information & communication | 2023 |
| Glasshouse Hair Limited | Other services | 2018 |
| Glassington Limited | Hospitality | 2013 |
| Glassworks Mews Management Company Limited | Households | 2018 |
| Glazing Consultancy Services Limited | Construction | 2019 |
| GLD Enterprises Ltd | Other services | 2022 |
| GLE Finance Limited | Financial services | 2011 |
| GLE Rental 2021 Limited | Administrative & support | 2021 |
| GLE Rental Limited | Administrative & support | 2010 |
| Gleam Windows & Gutters Ltd | Administrative & support | 2024 |
| Glebemeadow Limited | Real estate | 1984 |
| Gleeds Advisory Limited | Professional & scientific | 2008 |
| Gleeds Americas Holdings Limited | Professional & scientific | 2007 |
| Gleeds Asia Pacific Holdings Limited | Professional & scientific | 1993 |
| Gleeds Building Surveying Limited | Professional & scientific | 1998 |
| Gleeds Capital Limited | Professional & scientific | 1996 |
| Gleeds Corporate Services Limited | Professional & scientific | 1998 |
| Gleeds Cost Management Limited | Professional & scientific | 2008 |
| Gleeds Employment Services (Bristol) | Administrative & support | 1994 |
| Gleeds Employment Services (London) | Administrative & support | 1994 |
| Gleeds Employment Services (Nottingham) | Administrative & support | 1994 |
| Gleeds Energy Limited | Professional & scientific | 2005 |
| Gleeds Europe Holdings Limited | Professional & scientific | 1998 |
| Gleeds Global Limited | Professional & scientific | 2011 |
| Gleeds Health & Safety Limited | Professional & scientific | 1996 |
| Gleeds International Holdings (1995) Limited | Professional & scientific | 1995 |
| Gleeds International Limited | Professional & scientific | 2007 |
| Gleeds LLP | | 2024 |
| Gleeds Management Services Limited | Professional & scientific | 1983 |
| Gleeds Middle East Limited | Professional & scientific | 2007 |
| Gleeds Technology Limited | Professional & scientific | 1998 |
| Gleeds UK Limited | Professional & scientific | 2008 |
| Gleefully Ltd | Wholesale & retail | 2026 |
| Gleem Home Cleaning Limited | Administrative & support | 2016 |