| General Trade and Industry Ltd | Manufacturing | 2022 |
| Generation Culture Ltd | Professional & scientific | 2024 |
| Generation Healthy Minds Limited | Professional & scientific | 2019 |
| Generative Films Limited | Information & communication | 2023 |
| Genesius Consulting Limited | Administrative & support | 2018 |
| Genlec Industrial Control Systems Limited | Manufacturing | 1990 |
| Genoconnect Limited | Information & communication | 2023 |
| Gensition Ltd | Wholesale & retail | 2026 |
| Gentium Group UK Ltd | Administrative & support | 2021 |
| Gentle Path Community Care CIC | Health & social care | 2025 |
| Gentle Path Health Consultancy Ltd | Professional & scientific | 2025 |
| Geoenvironmental Solutions Limited | Construction | 2021 |
| Geomart Ltd | Wholesale & retail | 2025 |
| Geometry Property Ltd. | Real estate | 2022 |
| George Chadwick Associates Ltd | Professional & scientific | 2017 |
| George Court (Biggleswade) Limited(The) | Households | 1982 |
| George Henry Associates (Farming) LLP | | 2013 |
| George James & Co Consultants Ltd | Professional & scientific | 2025 |
| George James Carpentry Ltd | Construction | 2022 |
| George Lupsan Limited | Transport & logistics | 2019 |
| George Millard Woodwinds Ltd | Arts & recreation | 2026 |
| George Njambi Driver Ltd | Transport & logistics | 2022 |
| George T&J Decorating Ltd | Construction | 2023 |
| George Wrycroft Builders Limited | Construction | 1997 |
| Georgia House Stud Ltd | Arts & recreation | 2022 |
| Georgica (Lewisham) Limited | Arts & recreation | 2006 |
| Georgica Holdings Limited | Arts & recreation | 2006 |
| Georgica Limited | Arts & recreation | 2000 |
| Georgie's Aesthetics Ltd | Other services | 2020 |
| Geosentinel Space Ltd | Manufacturing | 2026 |
| GER Investments Limited | Financial services | 2021 |
| Gerald Court Management Company Limited | Households | 1988 |
| Gerald Judd Limited | Real estate | 1936 |
| Gerhard Novak Ltd | Professional & scientific | 2019 |
| GET Away Travel Ltd | Administrative & support | 2022 |
| GET Staffed Online Recruitment Limited | Administrative & support | 2012 |
| Getshot Ltd | Information & communication | 2022 |
| Getstylishbyvastrauk Ltd | Wholesale & retail | 2025 |
| GFX Gaming Limited | Wholesale & retail | 2025 |
| GG Automation Services Ltd | Information & communication | 2015 |
| GGA Property Investments Ltd | Real estate | 2024 |
| GGV BIV Ltd | Construction | 2020 |
| GH Investment Properties Ltd | Real estate | 2026 |
| GH Print Limited | Wholesale & retail | 2014 |
| Ghafoor Health Limited | Health & social care | 2025 |
| Ghafran Store Limited | Wholesale & retail | 2025 |
| Ghananeel IT Limited | Information & communication | 2013 |
| Gheo IT Suport Ltd | Information & communication | 2025 |
| GHG Engineering Services Ltd | Manufacturing | 2023 |
| GHH Highover Ltd | Extraterritorial | 2023 |
| GHH Transfer Limited | Real estate | 2019 |
| Ghitu Transport Limited | Transport & logistics | 2021 |
| Ghost Kicthen Bedford Ltd | Hospitality | 2025 |
| Ghost KITCHEN1 Ltd | Hospitality | 2024 |
| Ghostrack Limited | Information & communication | 2025 |
| Giani Transport Limited | Transport & logistics | 2023 |
| Gianicgr Limited | Wholesale & retail | 2025 |
| GIB Scaffolding Ltd | Construction | 2023 |
| Gibbins Avionics Limited | Manufacturing | 2009 |
| Gibbins Property Ltd | Real estate | 2020 |
| Gibbs Effects Limited | Information & communication | 2019 |
| Gibson-Sexton Holdings Limited | Professional & scientific | 2014 |
| Giddy Goat Riseley Ltd | Hospitality | 2018 |
| Gifla Associates Ltd | Professional & scientific | 2012 |
| Giftopia Ltd | Wholesale & retail | 2015 |
| GIFTZ4YOU Ltd | Transport & logistics | 2026 |
| Gigatune Limited | Information & communication | 2011 |
| Gigi Baraga Ltd | Hospitality | 2026 |
| Gilfillan Murray Consulting Ltd | Public administration | 2025 |
| Gilgal Investments Ltd | Households | 2012 |
| Gilhooley T/A the Property Guys Ltd | Real estate | 2023 |
| Gill & Co Holdings Limited | Financial services | 2022 |
| Gill & Co Property Limited | Real estate | 2022 |
| Gill GAS and Electrical Ltd | Construction | 2022 |
| Gill Hudson Homes (Rectory) Ltd | Construction | 2021 |
| Gill Hudson Homes Barford Ltd | Construction | 2021 |
| Gill Hudson Homes Clifton Limited | Construction | 2020 |
| Gill Real Estate Limited | Real estate | 2024 |
| Gill Westgate Consultancy Limited | Professional & scientific | 2013 |
| Gill-Hudson Homes Limited | Construction | 2014 |
| Gillcleaners Limited | Administrative & support | 2025 |
| Gillian Snowball Ltd | Professional & scientific | 2015 |
| Gim.Technology Ltd | Information & communication | 2019 |
| Gina Investments Ltd | Real estate | 2024 |
| Gina Property and Investment Ltd | Real estate | 2024 |
| Ginji Ltd | Manufacturing | 2024 |
| Giovanna Motors Ltd | Wholesale & retail | 2024 |
| Giovanna's Hair Salon Limited | Other services | 2022 |
| Giovanni's Gelato Limited | Manufacturing | 2013 |
| Giovanni's Gelato MK Limited | Hospitality | 2019 |
| Giovanni’S Gelato Franchising Limited | Hospitality | 2017 |
| Giraffidae Holdings Limited | Hospitality | 2016 |
| Give ME Events Limited | Hospitality | 2024 |
| GJ Poulett Services Ltd | Construction | 2026 |
| GJ Wilcox (Agric) Limited | Agriculture & fishing | 2007 |
| GJF Accountancy Services Limited | Extraterritorial | 2021 |
| Gjtprivate Limited | Health & social care | 2014 |
| GKL Consultancy Ltd | Information & communication | 2019 |
| GKW Wealth Management Ltd | Financial services | 2020 |
| GL Scaffolding Limited | Construction | 2020 |