| Fortress Cyber Ltd | Information & communication | 2021 |
| Forward Vision Limited | Extraterritorial | 2015 |
| Forward Vision Solutions Limited | Manufacturing | 2008 |
| Foursails Partnership Limited | Professional & scientific | 2020 |
| FOX & Co Deli Ltd | Hospitality | 2026 |
| Foxtrot Management and Consulting Ltd | Real estate | 2020 |
| Fractional Growth Advisor Ltd | Professional & scientific | 2024 |
| Framingdale Ltd. | Arts & recreation | 2021 |
| Frank & Lively Ltd. | Professional & scientific | 2009 |
| Frankel Care Limited | Health & social care | 2010 |
| FREEDOM2TRADE Limited | Professional & scientific | 2000 |
| Fresh Home Improvements Ltd | Construction | 2014 |
| Freshly Squeezed International Events Limited | Administrative & support | 2012 |
| Friary Hall Management Company Limited | Households | 2011 |
| Frith Residents Association Limited | Hospitality | 1997 |
| Frittidrozd Ltd | Hospitality | 2020 |
| Front Page Holdings Ltd | Financial services | 2025 |
| Frugal Booking Service Ltd | Transport & logistics | 2025 |
| FRY Management Consultancy Ltd | Information & communication | 2020 |
| Fulkr Ltd | Professional & scientific | 2025 |
| Full Force Power Cleaning Ltd | Administrative & support | 2026 |
| Full Throttle Ltd | Information & communication | 2026 |
| Furniture Fleet Services Ltd | Construction | 2026 |
| Future Flight Concepts Ltd | Professional & scientific | 2017 |
| Future Health Training Ltd | Other services | 2018 |
| Future Plumbing Limited | Construction | 2003 |
| G K Philatelic Consultants Limited | Wholesale & retail | 2006 |
| G P M Promotions Limited | Administrative & support | 1989 |
| G R Matthews Limited | Information & communication | 2024 |
| Gabrielle Bradshaw Limited | Arts & recreation | 2015 |
| Galahad AI Ltd | Information & communication | 2024 |
| Galipats Limited | Construction | 2009 |
| Gallus Lighting Limited | Information & communication | 2011 |
| Gamaroff Ltd | Wholesale & retail | 2024 |
| Gamasiab Ltd | Wholesale & retail | 2021 |
| Game Ready Rental Ltd | Administrative & support | 2012 |
| Garcha Corporation Ltd | Real estate | 2017 |
| GARDEN4SEASONS Limited | Administrative & support | 2011 |
| Garth Enterprises Limited | Construction | 1989 |
| Gary Pritchard Services Limited | Information & communication | 1999 |
| Gask Inc Design & Branding Ltd | Manufacturing | 2016 |
| Gateway Work Solutions Limited | Administrative & support | 2026 |
| GBP (Westmead) Management Ltd | Real estate | 2016 |
| Gbyt Ltd | Professional & scientific | 2022 |
| GD Market Mentoring Ltd | Real estate | 2022 |
| GD100 Limited | Financial services | 2025 |
| GE & EJ Experts Ltd | Construction | 2024 |
| GE Consultancy Services Limited | Professional & scientific | 2015 |
| Geeves Business Solutions Limited | Other services | 2013 |
| Gemcor Investments Limited | Wholesale & retail | 2004 |
| Gendem Limited | Administrative & support | 2011 |
| General Demolition Limited | Water & waste | 2003 |
| General Wine and Liquor Company Limited | Wholesale & retail | 1986 |
| General Wine Holdings Ltd | Financial services | 2012 |
| Genus Medica Limited | Health & social care | 2001 |
| Georgian Music House CIC | Education | 2026 |
| GFT UK and European Ltd | Transport & logistics | 2024 |
| GH UK 25 Limited | Other services | 2025 |
| Gibbs M&E Limited | Construction | 2021 |
| GIG Software (UK) Limited | Information & communication | 2024 |
| Gigawatt Ltd | Construction | 2015 |
| Gilbert Homes (the Avenue) Limited | Construction | 2013 |
| Gilbert Homes Limited | Construction | 1997 |
| Giles Publication Services Ltd | Information & communication | 2023 |
| Ginger Malcolm Ltd | Real estate | 2010 |
| GK Capital Properties Ltd | Construction | 2021 |
| GK Data Limited | Extraterritorial | 2023 |
| Glimpseplan Limited | Real estate | 1981 |
| Global Assessment Bureau Ltd | Professional & scientific | 2022 |
| Global College of Universal Studies and Technology (Gcust) Ltd | Education | 2025 |
| Global Customs Systems UK Limited | Transport & logistics | 2021 |
| Global Engineering & Procurement Ltd | Wholesale & retail | 2025 |
| Global Fund Services Ltd | Administrative & support | 2009 |
| Global Pharmaceutical Supplies Limited | Wholesale & retail | 2019 |
| Global Technology Dormitory Limited | Professional & scientific | 2024 |
| Glossee Ltd | Wholesale & retail | 2025 |
| GM Carpets and Floors Ltd | Wholesale & retail | 2023 |
| GMS Utilities Limited | Professional & scientific | 2024 |
| GN Domus Group Ltd | Real estate | 2025 |
| Godwit Quantum Navigation Ltd | Professional & scientific | 2026 |
| Gold CUP Management Co Limited | Households | 2016 |
| Gold INK Limited | Professional & scientific | 2025 |
| Goldcrest Events Ltd | Other services | 2018 |
| Golden Commercial Cleaning Services Ltd | Wholesale & retail | 2021 |
| Golden Gardening Services Ltd | Administrative & support | 2024 |
| Golden Trio Ecommerce Ltd | Wholesale & retail | 2025 |
| Goldentaste Limited | Hospitality | 2023 |
| Goldridge Capital Ltd | Construction | 2026 |
| Goldridge Property Group Ltd | Construction | 2026 |
| Good Earth Properties Ltd | Real estate | 2020 |
| Goodhew Investments Limited | Professional & scientific | 2007 |
| Goodhew SCR Limited | Professional & scientific | 2007 |
| Goodwin Hartshorn Ltd | Professional & scientific | 2002 |
| Gowersands Investments Ltd | Financial services | 2024 |
| GP Partnership Ltd | Health & social care | 2015 |
| GP Reports Ltd | Health & social care | 2016 |
| Gpmr Ltd | Health & social care | 2016 |
| Grace Allen Homes Limited | Professional & scientific | 2005 |
| Graham W Rapley Garden Maintenance Ltd | Professional & scientific | 2008 |
| Grail Enterprises Ltd | Administrative & support | 2012 |