| Fenech Ductwork Services Limited | Construction | 2024 |
| Ferenc Limited | Transport & logistics | 2023 |
| Finanché Card Ltd | Financial services | 2026 |
| Finesilver Ltd | Administrative & support | 2025 |
| Finest Relocations Limited | Real estate | 2023 |
| Fisher LEE Limited | Construction | 2018 |
| Fixora Maintenance Ltd | Administrative & support | 2025 |
| Flatt Finishes Limited | Construction | 2015 |
| Flow Apps Ltd | Information & communication | 2025 |
| Flow Tech London Ltd | Construction | 2021 |
| FLOW-3 Limited | Arts & recreation | 2020 |
| Fluvex Ltd | Wholesale & retail | 2026 |
| FMC Agency Ltd | Real estate | 2024 |
| Fnimia Limited | Real estate | 2026 |
| Fondhaiti Mission for Life Ltd | Construction | 2026 |
| Forgebuild Ltd | Construction | 2026 |
| Franco Europe Limited | Wholesale & retail | 2024 |
| Freda Designs Limited | Wholesale & retail | 2025 |
| Freedom to FLY Solutions Limited | Health & social care | 2022 |
| Freel Consulting Ltd | Professional & scientific | 2023 |
| Freshine Products Ltd | Wholesale & retail | 2024 |
| Fronep Ltd | Wholesale & retail | 2025 |
| Front Linke Limited | Wholesale & retail | 2024 |
| Ftmomini Limited | Wholesale & retail | 2025 |
| Fujian Province Sanyiqianjin Trading Company Ltd | Wholesale & retail | 2025 |
| Full Profit Limited | Wholesale & retail | 2025 |
| Furson Service Limited | Wholesale & retail | 2024 |
| Fuseless FAN CIC | Hospitality | 2023 |
| Fusion Plumbing and Electrical Ltd | Manufacturing | 2009 |
| Future Property Investments Limited | Real estate | 2019 |
| FW Property Services Ltd | Construction | 2024 |
| Fynds.Cart Ltd | Wholesale & retail | 2025 |
| G Day Engineering Limited | Construction | 2010 |
| G G Electrical (London) Limited | Manufacturing | 2016 |
| G Hogman & SON Limited | Construction | 2016 |
| Gadget Basket Ltd | Wholesale & retail | 2026 |
| Gareth Allison Design Limited | Construction | 2012 |
| GATOR8 Limited | Information & communication | 2025 |
| GB Mart Ltd | Wholesale & retail | 2025 |
| Generext Ltd | Information & communication | 2025 |
| Gentium Merchandiser Ltd | Wholesale & retail | 2021 |
| Geoffrey O Williams Limited | Administrative & support | 2020 |
| GET Software Deals Ltd | Wholesale & retail | 2024 |
| GFX Artist Ltd | Wholesale & retail | 2024 |
| Ghecko Ltd | Wholesale & retail | 2025 |
| Giftedwithlove Ltd | Wholesale & retail | 2026 |
| GL Group United Ltd | Wholesale & retail | 2024 |
| Glenfyne Properties Limited | Real estate | 2024 |
| Glenfyne Services Limited | Construction | 2007 |
| Global Canvas Limited | Health & social care | 2010 |
| Global Educational Support Services Ltd | Wholesale & retail | 2022 |
| Global Security Guards Ltd | Administrative & support | 2020 |
| Global Zenith Limited | Wholesale & retail | 2025 |
| Gluta White Limited | Wholesale & retail | 2026 |
| Godar Ltd | Wholesale & retail | 2025 |
| Gold World Limited | Wholesale & retail | 2025 |
| Golden Flow Care Services Limited | Health & social care | 2023 |
| Goma Services Limited | Health & social care | 2018 |
| Goodmaster Limited | Construction | 2006 |
| Governance Perspectives Limited | Professional & scientific | 2015 |
| Goyal Solutions Limited | Financial services | 2023 |
| Grand Events Marquees Ltd | Administrative & support | 2025 |
| Grandpiece Ltd | Wholesale & retail | 2025 |
| Grapa Limited | Administrative & support | 2014 |
| Greatprime Ltd | Wholesale & retail | 2025 |
| Griffin Property Management London Limited | Real estate | 2008 |
| Grovewood Avenue Management Limited | Households | 2021 |
| Guangzhou Taihuo Trading Ltd | Wholesale & retail | 2025 |
| Gulli & Sons Ltd | Information & communication | 2026 |
| Gulzar Logistics Limited | Wholesale & retail | 2025 |
| Gymplusone Limited | Information & communication | 2026 |
| H&R Nexus Ltd | Wholesale & retail | 2025 |
| Hackathon Raptors C.I.C. | Information & communication | 2024 |
| HAIR359 Limited | Other services | 2018 |
| Hakam Store Ltd | Wholesale & retail | 2025 |
| Halle Lettings Limited | Real estate | 2020 |
| Hallrd Ltd | Real estate | 2024 |
| Hallridge Holdings Limited | Financial services | 2026 |
| Hambros Roofing Limited | Construction | 2022 |
| Hansle Brown Partnership LLP | | 2022 |
| Happy Where Ltd | Wholesale & retail | 2023 |
| Harper Electrical Services Limited | Construction | 2007 |
| Harpgrowth Ltd | Wholesale & retail | 2024 |
| Hazell Ductwork Services Limited | Construction | 2026 |
| Hazell Ventilation Limited | Construction | 2021 |
| Hbhachu Limited | Information & communication | 2015 |
| Heal+ Ltd | Manufacturing | 2025 |
| Health Exchange SOS Limited | Health & social care | 2021 |
| Heaven Loot Ltd | Wholesale & retail | 2025 |
| Henley Traders Ltd | Wholesale & retail | 2024 |
| Heritage Estate Designs Ltd | Construction | 2023 |
| Hexsos Limited | Health & social care | 2021 |
| High on Apps Ltd | Information & communication | 2025 |
| Hillcrest Living Ltd | Health & social care | 2026 |
| Hirtilium Global Limited | Professional & scientific | 2024 |
| Hmrsk Traders Ltd | Wholesale & retail | 2026 |
| Home of Modesty Ltd | Wholesale & retail | 2025 |
| Horan Ltd | Wholesale & retail | 2025 |
| Hotugo Ltd | Wholesale & retail | 2025 |
| House of Mika London Limited | Wholesale & retail | 2025 |