| G & G Property Services Limited | Real estate | 1996 |
| G & J Kelly Contracts Ltd | Construction | 2007 |
| G & K Decorators Limited | Construction | 2020 |
| G a Rigging Ltd | Construction | 2011 |
| G B Builders (LDN) Ltd | Construction | 2018 |
| G J M Training Limited | Education | 2020 |
| G J Metalworks Ltd | Manufacturing | 2010 |
| G Jones & Sons Limited | Construction | 2011 |
| G Medical Limited | Health & social care | 2022 |
| G Nellas Ltd | Transport & logistics | 2016 |
| G&B Finch Agricultural Ltd | Financial services | 2021 |
| G&G (Essex) Ltd | Health & social care | 2018 |
| G&G Accommodation Limited | Real estate | 2026 |
| G&G Properties Services and Landscaping Ltd | Professional & scientific | 2021 |
| G&N Contracts Ltd | Construction | 2015 |
| G&N Technology Limited | Information & communication | 2010 |
| G&V Ltd | Manufacturing | 2022 |
| G-As (Guyan Appointments & Solutions) Ltd | Administrative & support | 2024 |
| G-Jstomy Solutions Limited | Information & communication | 2010 |
| G.A.Smith & Sons.Limited | Wholesale & retail | 1929 |
| G.K.Max Limited | Real estate | 2020 |
| G.O Roofing Ltd | Construction | 2025 |
| G.Rice Kitchens and Bathrooms Limited | Construction | 2016 |
| G.S. White & SON (Farms) Limited | Agriculture & fishing | 1969 |
| G.W. Cooper (Farms) Limited | Agriculture & fishing | 1966 |
| G2 Studio Limited | Professional & scientific | 2021 |
| G3 Construction (UK) Ltd | Construction | 2011 |
| G6 Comms Limited | Information & communication | 2015 |
| G7 Heritage Limited | Construction | 2019 |
| GA Serviced Offices Limited | Real estate | 2021 |
| GAB Plumbing Ltd | Manufacturing | 2026 |
| Gabay Care Ltd | Health & social care | 2026 |
| Gable Builders Ltd | Construction | 2026 |
| Gable Roofing Limited | Construction | 2014 |
| Gadgets Solution Chelmsford Ltd | Wholesale & retail | 2019 |
| Gadsby Wicks Limited | Extraterritorial | 2015 |
| Gaha Limited | Other services | 2021 |
| Gaia Escapes Ltd | Administrative & support | 2024 |
| Gainsborough Court (Brentwood) Limited | Real estate | 2010 |
| GAL2013 Ltd | Real estate | 2015 |
| Galax-C Digital Services Ltd | Information & communication | 2022 |
| Galelaye Ltd. | Wholesale & retail | 2022 |
| Galileo Properties Limited | Real estate | 2018 |
| Galleon Park Residents Association Limited | Households | 2000 |
| Galleons Hill Consultancy Limited | Professional & scientific | 2013 |
| Galleywood Business Services Limited | Extraterritorial | 2021 |
| Galleywood Group Limited | Financial services | 2020 |
| Galleywood Logistics Limited | Transport & logistics | 2004 |
| Galleywood Management Consultancy Limited | Professional & scientific | 2021 |
| Galleywood Properties Limited | Real estate | 2024 |
| Galleywood Shipping (Baltic Arrow) Limited | Transport & logistics | 2023 |
| Galleywood Shipping (Baltic Express) Limited | Transport & logistics | 2023 |
| Galleywood Shipping Limited | Professional & scientific | 2007 |
| Galleywood Timber Products Limited | Wholesale & retail | 2010 |
| Galleywood Vineyards Limited | Real estate | 2010 |
| Galleywoodwinery Ltd | Other services | 2018 |
| Galontara Limited | Wholesale & retail | 2025 |
| Gamart Properties Limited | Real estate | 1982 |
| Gamasco Holdings Limited | Financial services | 2022 |
| Gamasco Limited | Wholesale & retail | 2000 |
| Game Day Vision C.I.C. | Transport & logistics | 2023 |
| Game Stone Limited | Wholesale & retail | 2022 |
| Gamer Chronicles Ltd | Information & communication | 2022 |
| Gamja Limited | Real estate | 2023 |
| Gamma Heating Ltd | Construction | 2026 |
| Garage Unknown Ltd | Wholesale & retail | 2022 |
| Garden Living Limited | Wholesale & retail | 2013 |
| Garden ME Limited | Administrative & support | 2025 |
| Garden Rooms Essex Ltd | Construction | 2020 |
| Garden Wonder Limited | Administrative & support | 2014 |
| Gardenia House Property Ltd | Real estate | 2021 |
| Gardenlore Limited | Administrative & support | 2012 |
| Gardiner & Associates Ltd | Administrative & support | 1993 |
| Gardiners Park (Phases 3-9) Residents Management Company Limited | Households | 2021 |
| Gardner Building Limited | Real estate | 2013 |
| Garland & Bird Ltd | Construction | 2017 |
| Garland & Bird Properties Limited | Real estate | 2021 |
| Garohn Ltd | Professional & scientific | 2007 |
| Garon Park Golf Events Limited | Arts & recreation | 2010 |
| Garrard Engineering Ltd | Professional & scientific | 2014 |
| Garrods Law Ltd | Administrative & support | 2007 |
| Garthwaite Property LLP | | 2013 |
| Garty Properties Ltd | Real estate | 2019 |
| Garuda Vahana Private Limited | Financial services | 2023 |
| Garwood Property Consultants Limited | Wholesale & retail | 1984 |
| Gary Chambers Design Limited | Professional & scientific | 2014 |
| Gary Powell & Associates Limited | Other services | 2018 |
| GAS and Water Limited | Construction | 2025 |
| GAS Maintainace Limited | Construction | 2025 |
| GAS Maintenance Ltd | Construction | 2025 |
| GAS Tight Heating and Plumbing Ltd | Administrative & support | 2017 |
| Gaskin Properties Limited | Real estate | 1975 |
| Gastro Healthcare Limited | Health & social care | 2017 |
| Gate Holdings Limited | Wholesale & retail | 1990 |
| Gate Street (Maldon) Management Company Limited | Households | 1994 |
| Gatecraft Gates Limited | Manufacturing | 2008 |
| Gateson's Property Ltd | Real estate | 2024 |
| Gather & Feast Event Management Ltd | Hospitality | 2019 |
| Gavea Technology Limited | Information & communication | 2017 |
| GAY Bowers Ltd | Construction | 2016 |