| Galio Property Ltd | Real estate | 2025 |
| Gamin Ltd | Construction | 2023 |
| Garuda NEP Limited | Wholesale & retail | 2021 |
| Gaurav Kumar Ltd | Construction | 2026 |
| GB Sports Coaching Ltd | Education | 2025 |
| Gbemi Investment Ltd | Information & communication | 2024 |
| GD Strabane Limited | Arts & recreation | 2025 |
| Gecko Aspects Limited | Construction | 2015 |
| Geet London Ltd | Wholesale & retail | 2025 |
| Gentlemens Hub Ltd | Other services | 2024 |
| Geolore Limited | Transport & logistics | 2020 |
| Georgewelding Ltd | Manufacturing | 2017 |
| Gevi Construction Ltd | Manufacturing | 2022 |
| GH2 Group-Facilities Ltd | Construction | 2017 |
| Gherghiceanu Pavel Ltd | Construction | 2016 |
| GHS Property Group Ltd | Households | 2025 |
| Gjuta Builders Ltd | Construction | 2025 |
| GLD Contracting Ltd | Construction | 2024 |
| GLD Contractors Ltd | Construction | 2021 |
| Global Hardware Limited | Manufacturing | 2007 |
| Global Hub Educational Network Limited | Education | 2019 |
| Globell Energy Ltd | Energy | 2017 |
| Globell Properties Ltd | Real estate | 2025 |
| Gloria Beez Limited | Wholesale & retail | 2021 |
| Gnmt Ltd | Transport & logistics | 2026 |
| Gold Hand Car Wash 24K Ltd | Administrative & support | 2025 |
| Golddylite Limited | Health & social care | 2014 |
| Golden Bakehouse Limited | Manufacturing | 2016 |
| Golden Eagle Care Limited | Health & social care | 2021 |
| Golden Eagle Parent and Child Placements Ltd | Health & social care | 2022 |
| Goldlife Affiliates Ltd | Wholesale & retail | 2021 |
| Goldwax Ltd | Wholesale & retail | 2021 |
| Goshen Products Ltd | Wholesale & retail | 2024 |
| GPM Contracts Limited | Construction | 2021 |
| GR Wholesales Ltd | Wholesale & retail | 2021 |
| Grace Hub Support Service Ltd | Education | 2025 |
| Grace Progress 2 Ltd | Real estate | 2025 |
| Grace Progress Ltd | Real estate | 2025 |
| Grace Safari Ltd. | Health & social care | 2017 |
| Grangehouse Limited | Households | 1997 |
| Great Lake Classics Ltd | Wholesale & retail | 2021 |
| Green Petals Limited Partnership | | 2019 |
| Green Rove Solutions Limited | Information & communication | 2024 |
| Green Task Ltd | Information & communication | 2025 |
| Greenwich Laundry Co Ltd | Other services | 2006 |
| Grey Palm Limited | Information & communication | 2019 |
| Grey Sky Services Ltd | Other services | 2023 |
| Grip Girl Ltd | Wholesale & retail | 2025 |
| Grss Limited | Real estate | 2015 |
| GS Plumbing & Heating Ltd | Construction | 2021 |
| GS Refurbishment Ltd | Construction | 2023 |
| GS Retailer Limited | Wholesale & retail | 2025 |
| Gudup Gudup Ltd | Wholesale & retail | 2025 |
| Gulunas Beauty Ltd | Wholesale & retail | 2025 |
| Gurtej Property Services Ltd | Real estate | 2025 |
| GVP Services Limited | Professional & scientific | 2026 |
| Gyroscope London Ltd. | Real estate | 2014 |
| H. K. Drylining Ltd | Construction | 2023 |
| H. K. Plastering Ltd | Construction | 2014 |
| HAC Construction Limited | Construction | 2012 |
| Hadley Gardens Day Care Services Ltd | Health & social care | 2019 |
| Hadwell & Jones Ltd | Administrative & support | 2016 |
| Halhussein Ltd | Health & social care | 2013 |
| Hallymatics Limited | Wholesale & retail | 2025 |
| HAN YU Feng Ltd | Wholesale & retail | 2024 |
| Handywest Ltd | Construction | 2019 |
| Hansons Global (UK) Limited | Wholesale & retail | 2024 |
| Happy Niños Ltd | Health & social care | 2023 |
| Hard and Slow Limited | Hospitality | 1997 |
| Hari and Yunita Ltd | Wholesale & retail | 2024 |
| Harjeet Kumar Ltd | Construction | 2024 |
| Harrai Ltd | Wholesale & retail | 2013 |
| HAT Trapperz Ltd | Wholesale & retail | 2025 |
| Hattingh Services Ltd | Professional & scientific | 2025 |
| Hawaii Lodge Limited | Health & social care | 2021 |
| Hayes Commissioning Services Limited | Professional & scientific | 2016 |
| Hbdeadsea-Uk.Com Limited | Wholesale & retail | 2018 |
| Heavenly Residence Ltd | Real estate | 2026 |
| Heer's Transport Ltd | Transport & logistics | 2018 |
| Hennie Ltd | Wholesale & retail | 2026 |
| Henrick Properties Limited | Real estate | 2026 |
| Hermes Trismegistus Limited | Real estate | 2015 |
| HHJ Ltd | Transport & logistics | 2019 |
| Hibbah Barbers Limited | Other services | 2024 |
| Hidcaf Ltd | Information & communication | 2015 |
| Higher Learning Bridge C.I.C. | Education | 2021 |
| Historic Race Car Register Limited | Other services | 2022 |
| HLM Accountancy Limited | Professional & scientific | 2011 |
| Hold-Invest Limited | Real estate | 2019 |
| Home Hero London Ltd | Professional & scientific | 2025 |
| Home Protection Security Grilles Limited | Manufacturing | 1985 |
| Home Refurbishment and Renovation Ltd | Construction | 2025 |
| Homes and Lets Ltd | Real estate | 2023 |
| Honeymercy Limited | Administrative & support | 2020 |
| Horla Investments Ltd | Wholesale & retail | 2021 |
| Horo Okkes Limited | Hospitality | 2025 |
| Horse Builder Ltd | Construction | 2019 |
| Horvat Transport Ltd | Transport & logistics | 2024 |
| House of Grooming Hair Studio Ltd | Other services | 2026 |
| House of Number Plates Ltd | Manufacturing | 2025 |