| Griham Investments Ltd | Real estate | 2022 |
| Grill and Thrill Limited | Hospitality | 2021 |
| Grill House Essex Ltd | Hospitality | 2025 |
| Grill Hustle Ltd | Hospitality | 2019 |
| Griller Franchise UK Ltd | Hospitality | 2018 |
| Griller Ilford Limited | Hospitality | 2023 |
| Griller Ltd | Hospitality | 2021 |
| Griller NO 1 Ltd | Hospitality | 2021 |
| Grillford Restaurantuk Ltd | Hospitality | 2016 |
| Grimsby Javs Limited | Health & social care | 2019 |
| Grind Group and Partners Administration Limited | Transport & logistics | 2024 |
| Grind Group and Partners Management Limited | Construction | 2024 |
| Grind Group and Partners Solutions Limited | Construction | 2022 |
| Grind Subcontractors and Solutions Ltd | Construction | 2024 |
| Gripline Ltd | Wholesale & retail | 2025 |
| Grishokal Ltd | Wholesale & retail | 2024 |
| Grit Education Ltd | Education | 2020 |
| Grizzlesquad Ltd | Arts & recreation | 2023 |
| Grizzly Floor Ltd | Construction | 2021 |
| GRJ Ltd | Wholesale & retail | 2024 |
| Grocery HUT Limited | Wholesale & retail | 2017 |
| Groove Attack Limited | Education | 2008 |
| Grosvenor House Associates Ltd | Construction | 2016 |
| Grosvenor Kitchens Ltd | Manufacturing | 2024 |
| Grosvenor Olron Limited | Information & communication | 2023 |
| Grosvenor Road (Wanstead) Management Company Limited | Households | 1984 |
| Ground FX Limited | Administrative & support | 2020 |
| Group 01 Ltd | Construction | 2016 |
| Group 38 Limited | Wholesale & retail | 2015 |
| Group Double Glazing Limited | Manufacturing | 2026 |
| Group FTC Ltd | Real estate | 2026 |
| Group Klem String Entertainment Limited | Information & communication | 2025 |
| Grout Electrical Limited | Construction | 2023 |
| Grout Property Developments Limited | Construction | 2012 |
| Grove Associates (London) Limited | Construction | 2012 |
| Grove Drive Group Ltd | Wholesale & retail | 2026 |
| Grove Green Investments Ltd | Real estate | 2024 |
| Grove Road Developments Ltd | Real estate | 2024 |
| Grove Road Scheme Limited | Construction | 2025 |
| Grove Seeds Ltd | Wholesale & retail | 2025 |
| Grovehome Limited | Professional & scientific | 2004 |
| Grovehome Residential Limited | Real estate | 2007 |
| Grow Homes Limited | Households | 2020 |
| Grow Together Outsourcing Ltd | Professional & scientific | 2022 |
| Grow UP Consulting Limited | Education | 2024 |
| Grow With Eden Limited | Wholesale & retail | 2025 |
| Growatt New Energy Technology Limited | Wholesale & retail | 2013 |
| Growconstruct Ltd | Construction | 2024 |
| Growene Limited | Wholesale & retail | 2025 |
| GROWHIGH8 Ltd | Wholesale & retail | 2025 |
| Growleda Systems Ltd | Information & communication | 2026 |
| Growstar Ltd | Wholesale & retail | 2021 |
| Growthwise Accountants Limited | Professional & scientific | 2023 |
| Growup International Limited | Wholesale & retail | 2026 |
| GRT Security Services Limited | Administrative & support | 2023 |
| Grubsys Ltd | Information & communication | 2025 |
| Grupo Arena Limited | Construction | 2025 |
| GRV Foods Ltd | Hospitality | 2020 |
| GS Aerospace & Automotive Solutions Limited | Administrative & support | 2021 |
| GS Brother Software Limited | Information & communication | 2025 |
| GS Builds and Services Limited | Construction | 2025 |
| GS Construction (London) Ltd | Construction | 2019 |
| GS Double Glazing Ltd | Construction | 2024 |
| GS Eco Solutions Ltd | Professional & scientific | 2013 |
| GS LDN Limited | Professional & scientific | 2025 |
| GS Property (London) Ltd | Real estate | 2024 |
| GS SG Management Limited | Households | 2019 |
| GS UK Builders Limited | Construction | 2010 |
| GSB Finance Consultants Limited | Professional & scientific | 2020 |
| GSB Group Essex Limited | Real estate | 2020 |
| GSB Logistic Services Ltd | Transport & logistics | 2022 |
| GSC Essex Ltd | Wholesale & retail | 2023 |
| Gsck Cost Management Ltd | Professional & scientific | 2025 |
| GSD Decorators Ltd | Construction | 2018 |
| GSE Technology Ltd | Information & communication | 2013 |
| GSG London Ltd | Information & communication | 2016 |
| Gsgs Security Ltd | Administrative & support | 2025 |
| GSI Ventures Ltd | Real estate | 2015 |
| GSK Home Build Ltd | Construction | 2024 |
| GSK Management Ltd | Information & communication | 2012 |
| GSK Properties Investment Ltd | Real estate | 2025 |
| GSM Medics Ltd | Other services | 2014 |
| GSM Tech Solutions Ltd | Information & communication | 2018 |
| Gsmd Construction Ltd | Construction | 2026 |
| GSN Academy Ltd | Education | 2024 |
| GSN College Ltd | Education | 2024 |
| Gsnan Limited | Construction | 2024 |
| GSP Investment Properties Ltd | Financial services | 2025 |
| GSP London Ltd | Real estate | 2022 |
| GSR Technology Systems Limited | Information & communication | 2011 |
| GSS Double Glazing Ltd | Construction | 2023 |
| Gssl Limited | Education | 2014 |
| Gsti Ltd | Construction | 2024 |
| GSV Infotech Limited | Information & communication | 2012 |
| Gsvf Limited | Financial services | 2016 |
| GT Academy Ltd | Other services | 2019 |
| GT Constructions (UK) Ltd | Construction | 2011 |
| GT Ghosh Ltd | Wholesale & retail | 2025 |
| GT Joinery Woodworking Ltd | Manufacturing | 2011 |
| Gt-Autowerks Ltd | Wholesale & retail | 2025 |