| Gleaming Smiles Limited | Health & social care | 2024 |
| Glencoe TN (Holdings) Limited | Information & communication | 2014 |
| Glenshee GL (Holdings) Limited | Information & communication | 2014 |
| GLO Connections Ltd | Construction | 2025 |
| Global Reach Real Estate Limited | Real estate | 2024 |
| Glocal Experiences Ltd | Professional & scientific | 2015 |
| GM Prodriver Services Ltd | Other services | 2019 |
| GM Property Services (London) Limited | Construction | 2016 |
| Go Revive IT Ltd | Construction | 2020 |
| Go-Coachhire Limited | Transport & logistics | 2008 |
| Go-Pest Environmental Services Limited | Administrative & support | 2020 |
| Go-Taxi Hire Limited | Transport & logistics | 2019 |
| Gohamilton Driving School Limited | Education | 2025 |
| Gold Achievers Learning Consult Ltd | Administrative & support | 2014 |
| Gold Achievers Solutions | Hospitality | 2026 |
| Gonnella Family Limited | Wholesale & retail | 2019 |
| Good Tidings Limited | Real estate | 2020 |
| Goodwin Ellis Property Services Ltd | Real estate | 2004 |
| Gorgeous Gardens of Green Lane Limited | Administrative & support | 2021 |
| GPJ Property Construction Ltd | Construction | 2015 |
| Gpml Ethelbert Crescent Limited | Real estate | 2021 |
| Gpml High Halden Limited | Real estate | 2021 |
| Gpml North Farm Road Limited | Real estate | 2022 |
| Gpml Poplar Road Limited | Households | 2021 |
| Gpml Property Holdings Limited | Real estate | 2022 |
| Gpml Property Management Limited | Real estate | 2021 |
| Gpml Saxon Road Limited | Real estate | 2021 |
| GPR Roofing Limited | Construction | 2023 |
| Grace's Topiary Gardens Limited | Administrative & support | 2010 |
| Grad Records Limited | Information & communication | 2021 |
| Graes Healthcare Ltd | Health & social care | 2023 |
| Granny Flat Limited | Administrative & support | 2006 |
| Grants Blinds Limited | Manufacturing | 2008 |
| Gravity Care Services Ltd | Health & social care | 2020 |
| Greatbay Limited | Water & waste | 2005 |
| Green Growth Property Ltd | Real estate | 2022 |
| Green Light Emea Limited | Information & communication | 2014 |
| Green Sixty SIX Limited | Professional & scientific | 2024 |
| Greenbox Storage Limited | Administrative & support | 2008 |
| Greencourt PW Limited | Professional & scientific | 2013 |
| Greening Contractors Ltd | Construction | 2020 |
| GREENLAND168 Ltd | Real estate | 2022 |
| Greenvalley Properties Limited | Real estate | 2019 |
| Greenwich Bugsby Limited | Construction | 2022 |
| Greenwich Joinery (SE) Ltd | Manufacturing | 2023 |
| Grid Electrical Ltd | Construction | 2016 |
| Grosvenor House MEP Consultants Limited | Professional & scientific | 2024 |
| GS Plumbing (Kent) Ltd | Extraterritorial | 2015 |
| GTN Motors Ltd | Wholesale & retail | 2021 |
| Gulliver Investments Limited | Real estate | 2020 |
| Guvendy Limited | Wholesale & retail | 2011 |
| GVS Capital Ltd | Construction | 2023 |
| Gym Offshore One Limited | Energy | 2010 |
| Gym Offshore Three Limited | Energy | 2010 |
| Gym Offshore Two Limited | Energy | 2010 |
| H Anderson Electrical Services Ltd | Construction | 2018 |
| H Johnson Plant Sales Ltd | Wholesale & retail | 2025 |
| H&L Cleaning & Support Services Ltd | Administrative & support | 2023 |
| H5 Investment Holdings Limited | Financial services | 2022 |
| HA Beans&Craft Ltd | Hospitality | 2022 |
| Hamid Beauty Limited | Wholesale & retail | 2025 |
| Hander Limited | Wholesale & retail | 2013 |
| Happy Tails Limited | Other services | 2016 |
| Harbour Contractors Limited | Construction | 2020 |
| Hardiman-Scott Trading Limited | Professional & scientific | 2020 |
| Harley Motor Group Limited | Administrative & support | 2020 |
| Harold John Logistics Services Limited | Transport & logistics | 2011 |
| Harrow Lane Smiles Limited | Financial services | 2026 |
| Harvey James Consulting Ltd | Professional & scientific | 2020 |
| Haven Ridge Real Estate Ltd | Real estate | 2023 |
| Hawley Cleaning Limited | Administrative & support | 2016 |
| Hayesway Scaffolding Limited | Construction | 2013 |
| HB Consultancy and Advisory Limited | Professional & scientific | 2026 |
| Hb&T Consultants Ltd | Professional & scientific | 2016 |
| HCS Recruitment Limited | Administrative & support | 2015 |
| Head Renewable Consultants Ltd | Professional & scientific | 2026 |
| Healthcare Support (Erdington) Holdings Limited | Professional & scientific | 2000 |
| Healthcare Support (Erdington) Limited | Other services | 2000 |
| Heathview Property Investment Ltd | Real estate | 2019 |
| Helix BIO Ltd | Wholesale & retail | 2026 |
| Hemsted Homes Limited | Real estate | 2023 |
| Hennessy Limited | Construction | 1998 |
| Hexagon Consulting Partners Limited | Professional & scientific | 2016 |
| Hextable Village One Salon Ltd. | Other services | 2023 |
| HEY Hugo Limited | Information & communication | 2009 |
| Hibberd Solutions Limited | Professional & scientific | 2008 |
| High END Management Limited | Professional & scientific | 2012 |
| High-Pro Roofing Limited | Construction | 2023 |
| Highcroft Hall Management Company Limited | Hospitality | 1996 |
| Highland Project Development UK Limited | Real estate | 2013 |
| Highway Fuel Limited | Wholesale & retail | 2025 |
| Hill Financial Ventures Ltd | Health & social care | 2025 |
| Hillsidepropertyandlettings Ltd | Real estate | 2025 |
| Hire and Reward Ltd | Transport & logistics | 2016 |
| HK Co-Investments Ltd | Real estate | 2026 |
| HNP Trading Limited | Wholesale & retail | 2018 |
| Holbon (UK) Limited | Administrative & support | 2003 |
| Holden's Digital Ltd | Information & communication | 2012 |
| Holding Pivotal Logic Properties Limited | Financial services | 2023 |
| Home Matters Limited | Real estate | 2020 |