| GDN Constructions Limited | Construction | 2007 |
| GE Properties (East Anglia) Limited | Real estate | 2021 |
| Geeky Code Ltd | Information & communication | 2019 |
| Geer Domestic Properties Ltd | Real estate | 2017 |
| Geku Holdings Limited | Financial services | 2023 |
| Gelest Limited | Manufacturing | 2006 |
| Gellions Limited | Construction | 2021 |
| Gemstonex Limited | Health & social care | 2025 |
| Gen-Magneto Ltd | Manufacturing | 2024 |
| Genebon Care Solutions Ltd | Health & social care | 2025 |
| GENER8 Digital Marketing Ltd | Education | 2018 |
| Generate Property Packaging Ltd | Real estate | 2023 |
| Genesis Project C.I.C. | Other services | 2020 |
| Genfori Limited | Health & social care | 2023 |
| Genhaw Investments | Professional & scientific | 2025 |
| GEO Cart Ltd | Construction | 2018 |
| George & Stephens Ltd | Wholesale & retail | 2022 |
| George Consulting Ltd | Construction | 2018 |
| George Day Nurseries Limited | Education | 2011 |
| George GEO Transport Limited | Transport & logistics | 2017 |
| George Hammond Marine Ltd | Transport & logistics | 2021 |
| George LEE Elevator Services Limited | Manufacturing | 2016 |
| George Wicks Limited | Other services | 2010 |
| George Wyatt Developments Limited | Construction | 2006 |
| GEORGI2025 Ltd | Transport & logistics | 2025 |
| Gepe Limited | Transport & logistics | 2013 |
| Gepeto Ltd | Wholesale & retail | 2024 |
| Gerar Property Services Ltd | Real estate | 2022 |
| Gerry-Mendes Ltd | Health & social care | 2024 |
| GET Media Services Ltd | Professional & scientific | 2026 |
| GET Slim With GEM Ltd | Hospitality | 2023 |
| GFF Ecogen Limited | Energy | 2011 |
| Ghecos Ltd | Transport & logistics | 2025 |
| GI Training Limited | Professional & scientific | 2012 |
| Gifco Group Ltd | Administrative & support | 2023 |
| GIK 76 Ltd | Transport & logistics | 2021 |
| GIL Accountancy Services Ltd | Professional & scientific | 2009 |
| Gilded Global Partners Ltd | Wholesale & retail | 2024 |
| Gill SON Property Group Ltd | Real estate | 2025 |
| Gillamfireinstalls Ltd | Administrative & support | 2021 |
| Gillham Hayward Limited | Wholesale & retail | 1995 |
| Ginerica Trans Ltd | Transport & logistics | 2021 |
| GL Recruitment Group Ltd | Administrative & support | 2025 |
| GLA Steel Ltd | Construction | 2026 |
| Glacier GEM Limited | Wholesale & retail | 2025 |
| Glacken Consultancy Services Limited | Professional & scientific | 2023 |
| Gladepoint Management Company Limited | Real estate | 2006 |
| Glanix Limited | Real estate | 2017 |
| Glanix Resource UK Limited | Administrative & support | 2013 |
| Glassbox Design Limited | Arts & recreation | 2002 |
| Glasshouse Property Services Limited | Real estate | 2025 |
| Glassmoore Limited | Professional & scientific | 2009 |
| Glassstones Exterior Cleaning Ltd | Administrative & support | 2024 |
| Glastonbury Coffee Company Limited | Wholesale & retail | 2011 |
| Glcr Electrical Consultants Limited | Professional & scientific | 2017 |
| Glebe Way Property Company Limited | Households | 1966 |
| Glendale Medical Limited | Professional & scientific | 2022 |
| Glengracie Design Solutions Ltd | Information & communication | 2025 |
| Glitch Servers Ltd | Information & communication | 2025 |
| Glittersnglaze Limited | Other services | 2025 |
| GLM Aesthetics and Beauty Ltd | Other services | 2021 |
| Global Chauffeurs Ltd | Transport & logistics | 2015 |
| Global Inclusion Ltd | Education | 2024 |
| Global Influences Limited | Other services | 2000 |
| Global Onsite Ltd | Manufacturing | 2017 |
| Globalmart Corp Limited | Professional & scientific | 2013 |
| Glodel Foods Limited | Manufacturing | 2021 |
| Gloria Jean’S Coffees UK Franchising Ltd | Wholesale & retail | 2019 |
| Glorious Care Services Limited | Hospitality | 2022 |
| Glorious Harvest Ministries | Other services | 2012 |
| Glorious Mercy Ltd | Administrative & support | 2022 |
| Glow Tanning Medway Ltd | Other services | 2018 |
| Glowup Smile Limited | Other services | 2026 |
| Gloya Ltd | Wholesale & retail | 2024 |
| GLR Brickwork Ltd | Construction | 2025 |
| Glueon Limited | Information & communication | 2018 |
| GM & Sons Trading Limited | Wholesale & retail | 2024 |
| GM Prime Care Ltd | Health & social care | 2023 |
| GMC Business Advisers Ltd | Professional & scientific | 2022 |
| Gmoney Unisex Saloon & Fashion Limited | Other services | 2025 |
| GMR Cleaning Services Ltd | Administrative & support | 2023 |
| GMS Homes Limited | Construction | 2022 |
| Gmsr Electrical Limited | Construction | 2023 |
| GNA Couriers Ltd | Transport & logistics | 2019 |
| GNS Building Ltd | Construction | 2018 |
| Go Graphix Ltd | Professional & scientific | 2023 |
| Go Green Logistics Ltd | Wholesale & retail | 2017 |
| GO2SIM Limited | Information & communication | 2016 |
| Goactiveapp Ltd | Extraterritorial | 2025 |
| Goat Cricket Ltd | Wholesale & retail | 2022 |
| Gocool Adventures Limited | Arts & recreation | 2018 |
| Goddings House Limited(The) | Households | 1980 |
| Godfrey Distributions Ltd | Wholesale & retail | 2026 |
| Godsown Enterprises Ltd | Arts & recreation | 2024 |
| Goks Group Ltd | Wholesale & retail | 2025 |
| Gokwt Limited | Health & social care | 2019 |
| Gold Luxe Services Ltd | Administrative & support | 2024 |
| Goldacare Ltd | Health & social care | 2018 |
| Golden Hearts Services Limited | Health & social care | 2020 |
| Golden Key Motor Trade Ltd | Wholesale & retail | 2025 |