| Grays Complementary Clinic Limited | Health & social care | 2003 |
| Grays Automotive Limited | Wholesale & retail | 2023 |
| Grays Barbers Limited | Other services | 2014 |
| Grays Blinds Limited | Manufacturing | 1989 |
| Grays Cabline Limited | Transport & logistics | 2024 |
| Grays Car Sales Limited | Wholesale & retail | 2026 |
| Grays Curry House Ltd | Hospitality | 2020 |
| Grays Direct Marketing Limited | Other services | 2017 |
| Grays Engineering (Contracts) Limited | Construction | 1988 |
| Grays Foods Ltd | Hospitality | 2021 |
| Grays Fried Chicken Ltd | Hospitality | 2024 |
| Grays Fruits and VEG Ltd | Wholesale & retail | 2025 |
| Grays Glass Essex Limited | Wholesale & retail | 2018 |
| Grays Learning Centre Limited | Education | 2014 |
| Grays Mangal Ltd | Hospitality | 2020 |
| Grays Payroll - Services Ltd | Professional & scientific | 2019 |
| Grays Property Management Limited | Real estate | 2014 |
| Grays Super Store Limited | Wholesale & retail | 2025 |
| Grays Taxi Limited | Transport & logistics | 2019 |
| Grays Tech Ltd | Other services | 2016 |
| Grays Town Pizza Ltd | Hospitality | 2025 |
| Grays.Sharks Limited | Wholesale & retail | 2024 |
| Grayson Solar Installations Ltd | Construction | 2020 |
| Graystone Advisory Ltd | Professional & scientific | 2024 |
| Graziolater Limited | Construction | 2025 |
| Grazy Dayz Ltd | Hospitality | 2020 |
| GRD Lifts & Engineering Services Limited | Construction | 2020 |
| Great Anthony Limited | Health & social care | 2021 |
| Gred Trans Ltd | Transport & logistics | 2016 |
| Green Future Marketing Ltd | Professional & scientific | 2025 |
| Green Guardians Solution Limited | Energy | 2023 |
| Green Halo Cleaning Ltd | Administrative & support | 2025 |
| Green Installs Limited | Construction | 2026 |
| Green Pastures Global Limited | Wholesale & retail | 2024 |
| Green PCO Hire Ltd | Administrative & support | 2023 |
| Green-Light Daycare Centre Ltd | Health & social care | 2024 |
| Greener UK Solutions Limited | Other services | 2023 |
| Greenfields Property Services Limited | Real estate | 2024 |
| Greenfields Technology Limited | Real estate | 2023 |
| Greenfoxproperty Ltd | Real estate | 2021 |
| Greenhope Properties Limited | Real estate | 2026 |
| Greenspan Construction Limited | Construction | 2023 |
| Greenstone London Ltd | Other services | 2017 |
| Greenwich Labs Ltd | Education | 2020 |
| Greenwood Carpentry Ltd | Construction | 2013 |
| Greenwood UK Properties Ltd | Real estate | 2026 |
| GRH Ltd | Construction | 2023 |
| Griffin Residential Group Limited | Real estate | 2017 |
| Griffin Residential Sales Limited | Real estate | 2017 |
| Griffindene Limited | Construction | 1982 |
| Grindle Ltd | Information & communication | 2023 |
| Gripper Corporation Limited | Wholesale & retail | 2025 |
| Gritco Resources Ltd. | Construction | 2016 |
| Grocifly by Sufyan Ltd | Wholesale & retail | 2025 |
| Grodno Ltd | Construction | 2014 |
| Groovestar Music School CIC | Education | 2024 |
| Group Nico Limited | Financial services | 2011 |
| Grtt Holding Limited | Administrative & support | 2019 |
| GS 27 Barber Ltd | Other services | 2024 |
| GS Executive Chauffeur Services Limited | Transport & logistics | 2020 |
| GS Motor Ltd | Wholesale & retail | 2023 |
| Gsmash Ltd | Administrative & support | 2017 |
| GSP Enterprise Ltd | Information & communication | 2023 |
| GSP Interiors Limited | Construction | 2015 |
| GT Auto Services Ltd | Wholesale & retail | 2022 |
| GTN Sewing Limited | Manufacturing | 2008 |
| GTS Trans Ltd | Transport & logistics | 2015 |
| Guba Ltd | Administrative & support | 2026 |
| Guild Leisure Ltd | Hospitality | 2014 |
| Guneshoe Ltd | Hospitality | 2024 |
| Gurfateh Properties Ltd | Real estate | 2022 |
| Gurkha Tourism Limited | Administrative & support | 2014 |
| Guru Construction Services Ltd | Construction | 2022 |
| GUS Physiotherapy Ltd | Health & social care | 2026 |
| GV Creative Structures Ltd | Construction | 2022 |
| GV Sales Ltd | Wholesale & retail | 2025 |
| GVN Construction Ltd | Construction | 2021 |
| GWK Arms Ltd | Hospitality | 2023 |
| Gym Drift Ltd | Wholesale & retail | 2025 |
| Gynae Service Limited | Health & social care | 2023 |
| H & M Sons Ltd | Wholesale & retail | 2021 |
| H & N BAL Lettings Limited | Real estate | 2018 |
| H Kabir International Ltd | Administrative & support | 2026 |
| H Squared Renovation Ltd | Construction | 2026 |
| H&H Marketing Essex Ltd | Other services | 2022 |
| H&L Commercial Building Maintenance Ltd | Construction | 2026 |
| H. GAE Limited | Real estate | 2025 |
| H.C. Lazell (Lashings) Limited | Transport & logistics | 1997 |
| H.C.K.F Ltd | Construction | 2022 |
| H.F Trading Limited | Wholesale & retail | 2017 |
| H2H Cleaning and Care Services Ltd | Manufacturing | 2026 |
| H4U Ltd | Health & social care | 2023 |
| HAB Estates Ltd | Real estate | 2022 |
| Habib Properties Romford Limited | Real estate | 2025 |
| Haborah Limited | Information & communication | 2006 |
| Hackney Capital Limited | Transport & logistics | 2020 |
| Hadassah Classic Events Ltd | Hospitality | 2020 |
| Hafam-Bee Limited | Health & social care | 2017 |
| Hageman Catering Group Ltd | Hospitality | 2025 |
| Hajim Ltd | Construction | 2023 |