| Fitys Ltd | Education | 2024 |
| Fitzer Electrical Services Ltd | Construction | 2010 |
| Fitzgerald & Sons Limited | Other services | 2018 |
| Fitzgerald Contractors Limited | Construction | 1980 |
| Fitzgerald EOT Trustee Limited | Construction | 2022 |
| Fitzgerald's Irish Store Ltd | Wholesale & retail | 2026 |
| Fitzgibbon Music Limited | Administrative & support | 2025 |
| Fitzhardinge House (Bristol) RTM Company Limited | Households | 2026 |
| Fitzpatricks Estates Ltd | Real estate | 2026 |
| Fitzpeace Limited | Transport & logistics | 2025 |
| Fitzrobia IT Limited | Information & communication | 2016 |
| Fitzrovia Cars Ltd | Wholesale & retail | 2015 |
| Fitzrovia Investments Limited | Financial services | 2026 |
| Fitzroy First Limited | Real estate | 2020 |
| Fitzsi Ltd | Wholesale & retail | 2021 |
| Fitzwilliam Ltd | Professional & scientific | 2003 |
| Fitzys TM Ltd | Construction | 2025 |
| Fiume Restaurant Ltd | Hospitality | 2013 |
| FIV Kingdom Limited | Hospitality | 2024 |
| Five Below Limited | Wholesale & retail | 2018 |
| Five Clear Way Limited | Wholesale & retail | 2021 |
| Five Cubed Realty Limited | Households | 2021 |
| Five G Birmingham Limited | Hospitality | 2024 |
| Five Henry Property Management Ltd | Households | 2026 |
| Five Housing Ltd | Real estate | 2020 |
| Five Hub Limited | Wholesale & retail | 2026 |
| Five Investment Group Ltd | Real estate | 2024 |
| Five Keyways Limited | Construction | 2025 |
| Five Oaks Green Holdings Limited | Real estate | 2011 |
| Five Oaks Green Ltd | Construction | 2011 |
| Five Payroll Solutions Ltd | Administrative & support | 2023 |
| Five Pence Productions Ltd | Information & communication | 2025 |
| Five Quantity Surveying Services Limited | Professional & scientific | 2023 |
| Five Rivers (Wolverhampton) Ltd | Real estate | 2018 |
| Five Rivers 2 UK Limited | Hospitality | 2010 |
| Five Rivers Management Limited | Financial services | 2021 |
| Five Sisters Kitchen Ltd | Hospitality | 2024 |
| Five Star Barbering Services Ltd | Other services | 2022 |
| Five Star Bricklayers &Builders Ltd | Construction | 2021 |
| Five Star Car Sales Ltd | Wholesale & retail | 2022 |
| Five Star Day Nursery Great Barr Limited | Health & social care | 2024 |
| Five Star Day Nursery Oldbury Limited | Health & social care | 2024 |
| Five Star DRY Cleaning & Keys Shoe Repairs Ltd | Other services | 2024 |
| Five Star Executive Limited | Transport & logistics | 2015 |
| Five Star Holdings (Midlands) Limited | Extraterritorial | 2017 |
| Five Star Jewels & Co Ltd | Wholesale & retail | 2026 |
| Five Star Nails 01 Ltd | Other services | 2020 |
| Five Star Padel Limited | Administrative & support | 2025 |
| Five Star Properties Birmingham Ltd | Real estate | 2025 |
| Five Star Supermarket Birmingham Limited | Wholesale & retail | 2026 |
| Five Star Supermarket Ltd | Wholesale & retail | 2025 |
| Five Stars Awards Ltd | Administrative & support | 2023 |
| Five Stars Hand Car Wash Ltd | Wholesale & retail | 2026 |
| Five Starz Hand Car Wash Ltd | Wholesale & retail | 2026 |
| Five Steak Ltd | Hospitality | 2026 |
| Five Summit Holdings Ltd | Financial services | 2025 |
| Five Thirty Limited | Information & communication | 2019 |
| Five Ways Advisory Ltd. | Health & social care | 2026 |
| Five Ways Old Edwardians Sports Club Limited | Arts & recreation | 2011 |
| FIVE12 Holdings Ltd | Real estate | 2022 |
| Fivefold Collective Ltd | Real estate | 2026 |
| Fivelands Limited | Real estate | 1958 |
| Fiveoaks Capital Investments Ltd | Households | 2026 |
| Fiverivershome Ltd | Health & social care | 2025 |
| Fiveroots Property Ltd | Real estate | 2025 |
| Fives Property and Acquisitions Ltd | Financial services | 2026 |
| Fivestar Waste Collection Ltd | Water & waste | 2018 |
| Fivestones Digital (UK) Limited | Information & communication | 2023 |
| Fivestones Digital Consulting (UK) Limited | Information & communication | 2025 |
| Fiveways HI Fidelity Limited | Wholesale & retail | 1972 |
| Fiveways Leisure Group Ltd | Wholesale & retail | 2025 |
| Fivo Commercial Ltd | Wholesale & retail | 2018 |
| FIX & Finesse Ltd | Real estate | 2020 |
| FIX & Go Auto Care Midlands Ltd | Wholesale & retail | 2025 |
| FIX & Go Ltd | Construction | 2024 |
| FIX a Frame Birmingham Ltd | Construction | 2021 |
| FIX ALL Ltd | Construction | 2025 |
| FIX ANY Phone Ltd | Wholesale & retail | 2024 |
| FIX My Phone Ltd | Wholesale & retail | 2021 |
| FIX Plumbers Ltd | Construction | 2020 |
| FIX That Appliance Ltd | Other services | 2022 |
| Fix&Go Repairs Ltd | Manufacturing | 2025 |
| Fix-It Interior & Construction Ltd | Construction | 2025 |
| FIX2YOU Vehicles Ltd | Wholesale & retail | 2017 |
| FIX4U Roofing & Building Services Ltd | Construction | 2021 |
| Fixed Firefighting Systems Bureau Limited | Professional & scientific | 2018 |
| FIXED4U Ltd | Extraterritorial | 2024 |
| Fixerwestmid Ltd | Manufacturing | 2023 |
| Fixing Elements Ltd | Administrative & support | 2018 |
| Fixit Heating&Plumbing Ltd | Construction | 2024 |
| Fixit Renovation Ltd | Construction | 2023 |
| Fixit Windscreens Ltd | Professional & scientific | 2026 |
| Fixit-All BPH Ltd | Wholesale & retail | 2017 |
| Fixitflow Ltd | Extraterritorial | 2025 |
| Fixle Limited | Construction | 2019 |
| Fixoheat Ltd | Construction | 2018 |
| Fixon Ltd | Information & communication | 2026 |
| Fixora 360 Ltd | Manufacturing | 2025 |
| Fixsmith Maintenance Ltd | Construction | 2021 |
| Fixu Ltd | Wholesale & retail | 2022 |