| Grace Innovations Limited | Information & communication | 2025 |
| Grace LINE1 Limited | Wholesale & retail | 2026 |
| Grand Transport Limited | Transport & logistics | 2025 |
| Grasseygarden Ltd | Construction | 2024 |
| Gravity Wear Ltd | Wholesale & retail | 2024 |
| Grayford Industrial Limited | Wholesale & retail | 2000 |
| Great Bites Limited | Hospitality | 2026 |
| Great Confidence Ltd | Health & social care | 2022 |
| Greatwall Chippy Limited | Hospitality | 2023 |
| Green Care Services Middlesex Ltd | Administrative & support | 2017 |
| Green Electrical Projects Ltd | Construction | 2019 |
| Green Heating Resolutions Ltd | Construction | 2013 |
| Green Muscles Ltd | Wholesale & retail | 2018 |
| Greenland Health Care International Ltd | Health & social care | 2015 |
| Greentree Accountants Ltd | Professional & scientific | 2009 |
| Greenx Ltd | Energy | 2022 |
| Gregg & EVE UK Ltd | Hospitality | 2014 |
| Grethena Limited | Information & communication | 2024 |
| GRG Smart Limited | Manufacturing | 2025 |
| Grimes Estates Limited | Real estate | 2020 |
| Grimes Properties Ltd | Real estate | 2022 |
| Grimsby Estates Ltd | Real estate | 2007 |
| Grin Healthcare Services Ltd | Administrative & support | 2017 |
| Grosgo Traders Ltd | Wholesale & retail | 2025 |
| Grove 1 Limited | Other services | 2026 |
| Grover Equities Ltd | Real estate | 2026 |
| Grover Group UK Ltd | Wholesale & retail | 2016 |
| Growwww Ltd | Transport & logistics | 2026 |
| GS Commercial Ltd | Construction | 2024 |
| GS Electrical and Maintenance Ltd | Construction | 2024 |
| GS Group Properties Limited | Real estate | 2026 |
| GS Travel Services Ltd | Transport & logistics | 2022 |
| GSA Global System Agency Ltd | Transport & logistics | 2010 |
| GSA Housing Ltd | Real estate | 2026 |
| GSD Express Ltd | Transport & logistics | 2026 |
| GSJ Builders Ltd | Administrative & support | 2017 |
| GSJ Contracts Ltd | Administrative & support | 2025 |
| GSL Data & Electrical Ltd | Construction | 2021 |
| Gsquare Construction Limited | Construction | 2024 |
| GSV Holdings Limited | Financial services | 2020 |
| GT AV Ltd | Administrative & support | 2025 |
| Guiaspora-Uk Ltd | Health & social care | 2020 |
| GUL Media Production Ltd | Arts & recreation | 2018 |
| Gulacare and Services Ltd | Health & social care | 2025 |
| Gurjant Singh Khaira Ltd | Construction | 2025 |
| Gurkha Store Feltham Limited | Wholesale & retail | 2015 |
| Gurkha Superstore Feltham Ltd | Wholesale & retail | 2019 |
| Gurram Investments Limited | Construction | 2019 |
| Guru Kitchen & Bedroom Ltd | Construction | 2024 |
| Guru Nanak DEV JI Trust | Administrative & support | 2019 |
| Guru Physio Ltd | Health & social care | 2022 |
| Guruji Maharaj Realtors Limited | Real estate | 2025 |
| Gurwinder SINGH4 Ltd | Construction | 2022 |
| GVO Interiors Ltd | Construction | 2011 |
| Gwfuk Ltd | Information & communication | 2025 |
| Gym Colleague Ltd | Wholesale & retail | 2026 |
| GZ Virtual School Limited | Extraterritorial | 2024 |
| H & G Consultants Limited | Information & communication | 2013 |
| H & JJ Catering Ltd | Hospitality | 2017 |
| H & M Express Limited | Administrative & support | 2008 |
| H & M Maintenance Ltd | Construction | 2021 |
| H Plus Global Ltd. | Construction | 2013 |
| H S Dhillon Construction Ltd | Construction | 2020 |
| H&A Property Developers Limited | Real estate | 2023 |
| H&F Business Management Limited | Other services | 2021 |
| H&H Portfolio Ltd | Real estate | 2021 |
| H&M Trans Limited | Transport & logistics | 2016 |
| H&Rg Group Ltd | Wholesale & retail | 2025 |
| H&S Friars Court Limited | Real estate | 2025 |
| H&S Protec Ltd | Administrative & support | 2022 |
| H.I.H Ventures Limited | Wholesale & retail | 2024 |
| H.I.M Design&Building Ltd | Construction | 2012 |
| HA Meemm Limited | Wholesale & retail | 2023 |
| Habitat Building Contracts Limited | Construction | 2013 |
| Haematology Consultancy Ltd | Health & social care | 2020 |
| Hafiz Holdings Ltd | Wholesale & retail | 2023 |
| Hair & Beauty Empire Ltd | Other services | 2026 |
| Hair and Make-Up by Leila Ltd | Other services | 2026 |
| Hair by Yazmin Jade Ltd | Other services | 2021 |
| Hair Design by Alex Ltd | Other services | 2025 |
| Hair Design by Andreea Ltd | Other services | 2025 |
| Hair Tints Limited | Wholesale & retail | 2024 |
| Hajurko Gurkha Kitchen Limited | Hospitality | 2018 |
| Halal Food Europe Limited | Wholesale & retail | 2010 |
| Halina's Cleaners Limited | Administrative & support | 2016 |
| Hallmark Solicitors Limited | Professional & scientific | 2009 |
| Halo Care Group Ltd | Health & social care | 2026 |
| Halo Cleaning Ltd | Administrative & support | 2025 |
| Halo Recruitment Group Ltd | Administrative & support | 2025 |
| Hammad and Sons Cooperations Limited | Manufacturing | 2026 |
| Hammersmith Sushi Bar Ltd | Hospitality | 2023 |
| Hammurabi Trading Limited | Professional & scientific | 2018 |
| Hamzone Ltd | Wholesale & retail | 2023 |
| HAN 72 Ltd | Transport & logistics | 2023 |
| Hanba Limited | Other services | 2016 |
| Handmade by Salliebean Ltd | Wholesale & retail | 2025 |
| Handymanz Ltd | Real estate | 2018 |
| Hankyu Hanshin Express (UK) Limited | Transport & logistics | 1990 |
| Hans IT Limited | Information & communication | 2015 |
| Hanworth Autos Limited | Wholesale & retail | 2014 |