| Exegon Limited | Manufacturing | 1988 |
| Exeter Court 1 Limited | Financial services | 2020 |
| Exist Better Ltd | Health & social care | 2024 |
| Experience Amazing Results Limited | Financial services | 2021 |
| F & P Partners Limited | Professional & scientific | 2015 |
| F.Middleton Photography Ltd | Professional & scientific | 2022 |
| F/Et Stamford Ltd | Hospitality | 2026 |
| Fabble Ltd | Wholesale & retail | 2026 |
| Fabulosa Limited | Wholesale & retail | 2007 |
| Faccenda Ventures Ltd | Professional & scientific | 2025 |
| Faciliter Limited | Other services | 2017 |
| Fall Line Media Limited | Information & communication | 2003 |
| Fani Konstanta Ltd | Health & social care | 2024 |
| Faretra Management Ltd | Households | 2022 |
| Farmbrough Software Ltd | Information & communication | 2025 |
| Farriers Mews Management Company (Stamford) Limited | Real estate | 2010 |
| Fast DRIVING4U Ltd | Transport & logistics | 2023 |
| FAT Buffalo Ltd | Information & communication | 2020 |
| Fenechdigital Limited | Information & communication | 2015 |
| Fernhay Consulting Ltd | Professional & scientific | 2023 |
| Ferreira & Associates Limited | Health & social care | 2007 |
| Field and FOX Limited | Professional & scientific | 2025 |
| Filedot Limited | Administrative & support | 1989 |
| Finding Fitness Ltd | Arts & recreation | 2012 |
| Fineshade Food Ltd | Hospitality | 2026 |
| Finewiki Investments Limited | Real estate | 2026 |
| Fire Solutions Equipment Group Ltd | Wholesale & retail | 2010 |
| First Call Financial Advice Limited | Financial services | 2014 |
| First Link Finance Ltd | Financial services | 2019 |
| Fishtail HR Ltd | Professional & scientific | 2018 |
| Fitz & Fitz Ltd | Other services | 2025 |
| Fixedspeeds Consulting Ltd | Information & communication | 2025 |
| Flagstick Ltd | Professional & scientific | 2021 |
| Flava Café Bistro Ltd | Extraterritorial | 2023 |
| Flawless Body Ltd | Other services | 2016 |
| Flawless Body Online Ltd | Wholesale & retail | 2019 |
| Flawless Faces Ltd | Other services | 2015 |
| Fling Bar Services Ltd | Administrative & support | 2003 |
| Flipswitch Films Limited | Information & communication | 2023 |
| Flores Limited | Hospitality | 2003 |
| Flotree Limited | Real estate | 2023 |
| Fluid Signs Limited | Professional & scientific | 2015 |
| Flutterbox Limited | Professional & scientific | 2007 |
| Flynn Capital Limited | Construction | 2019 |
| Flynn Residential Ltd | Real estate | 2016 |
| Focused Projects Ltd | Wholesale & retail | 2010 |
| Food Quality Consulting Limited | Professional & scientific | 2007 |
| Footyfit SH CIC | Other services | 2025 |
| Ford Estimating Services Limited | Other services | 2017 |
| Ford Investments Ltd | Real estate | 2017 |
| Fordson Developments Ltd | Construction | 2017 |
| Forerunner (Electronic) Limited | Information & communication | 1983 |
| Forest Commercial Services Limited | Construction | 1996 |
| Forge 50 Ltd | Professional & scientific | 2025 |
| Form Changing Structures Limited | Professional & scientific | 2012 |
| Forman Property Solutions Ltd | Real estate | 2020 |
| Formworks Cloud Ltd | Information & communication | 2021 |
| Fortress Eight Limited | Construction | 2021 |
| Fortress Seven Limited | Real estate | 2021 |
| Founded AI Ltd | Information & communication | 2021 |
| Four Chimneys Restaurant T/As Mattoni's Ltd | Hospitality | 2017 |
| Four Construction Consultancy Group Limited | Financial services | 2012 |
| Four Group Limited | Extraterritorial | 2006 |
| Four Security Consultants Limited | Professional & scientific | 2006 |
| Fourth Element Creative Ltd | Information & communication | 2012 |
| Fourtwoeight Ground Engineering Limited | Construction | 2018 |
| Framework and Flourish Limited | Administrative & support | 2025 |
| Fraser Paratus SUM Limited | Professional & scientific | 2021 |
| Freeman Landscaping & Machinery Ltd | Administrative & support | 2022 |
| Freeman's Enterprise Ltd | Hospitality | 2019 |
| Frontline Fascias Ltd | Construction | 2022 |
| Frothys Limited | Hospitality | 2013 |
| Fryer & Callis Ltd | Extraterritorial | 2024 |
| FT PUB Company Ltd | Hospitality | 2020 |
| Full Bottle Limited | Other services | 2021 |
| Funding Clarity Limited | Professional & scientific | 2025 |
| Funny Winnie Clothings Ltd | Wholesale & retail | 2024 |
| Furry Tail Properties Limited | Real estate | 2025 |
| Fusion 3 Fitness Limited | Arts & recreation | 2016 |
| Fusion Business Advisory Limited | Professional & scientific | 2024 |
| Fusion Displays Exhibition Ltd | Manufacturing | 2015 |
| FUZ Productions Ltd | Arts & recreation | 2020 |
| G & D Stokes Limited | Hospitality | 2003 |
| G & O Design Ltd | Construction | 2018 |
| G & T Aesthetics Ltd | Other services | 2019 |
| G.Gray Limited | Professional & scientific | 2013 |
| Gadgets Shah Ltd | Other services | 2021 |
| GAG201 Limited | Real estate | 2004 |
| Gallardo & Blaine Designs Ltd. | Manufacturing | 2005 |
| Garden House Stamford Limited | Hospitality | 2015 |
| Gardenia Lounge Ltd | Hospitality | 2021 |
| Garie Nigel Hairwork Limited | Other services | 2017 |
| GAW Farming LLP | | 2023 |
| Gayle Grainger Counselling Limited | Health & social care | 2015 |
| Gazelle Associates Holdings LLP | | 2026 |
| GB Property Portfolio Limited | Construction | 2025 |
| GC Engineering Europe Ltd | Professional & scientific | 2024 |
| Gemax Holdings Ltd | Households | 2021 |
| Gemini Home Services Ltd | Construction | 2025 |
| Gemzandmagz Limited | Hospitality | 2012 |