| Fixuk Ltd | Construction | 2025 |
| Fixxland Ltd | Information & communication | 2024 |
| Fixzora Ltd | Construction | 2024 |
| Fiza Mart Ltd | Wholesale & retail | 2025 |
| Fizham Ltd | Information & communication | 2026 |
| Fizzbar Birmingham Ltd | Hospitality | 2019 |
| Fizzpop Makerspace C.I.C. | Other services | 2013 |
| Fizzy Tech Ltd | Wholesale & retail | 2026 |
| Fizzybutton Limited | Wholesale & retail | 2020 |
| FJ Autos Ltd | Wholesale & retail | 2025 |
| FJ Bookstore Ltd | Wholesale & retail | 2018 |
| FJ Capital Holdings Ltd | Real estate | 2026 |
| FJ Food Worcester Limited | Hospitality | 2026 |
| FJ Lounge Bar Limited | Hospitality | 2024 |
| FJA Legal Ltd | Professional & scientific | 2015 |
| Fjay Hoist OPS Ltd | Administrative & support | 2018 |
| FJB Property Group Ltd | Real estate | 2024 |
| FJD Construction Ltd | Construction | 2009 |
| FJD Consulting (and Design) Ltd | Construction | 2012 |
| FJD Consulting (and Design) Trustees Ltd | Professional & scientific | 2023 |
| FJD Property Limited | Real estate | 2015 |
| FJK Consultancy Limited | Administrative & support | 2025 |
| FJL Holdings Ltd | Real estate | 2024 |
| FJR Developments Limited | Real estate | 2024 |
| FJR Property Limited | Real estate | 2020 |
| Fjsm Limited | Health & social care | 2024 |
| FJT (B'Ham) Limited | Wholesale & retail | 2022 |
| FJV Investment | Financial services | 2021 |
| FJZ Solutions Ltd | Information & communication | 2023 |
| FK & Co Autos Limited | Wholesale & retail | 2024 |
| FK CBT Ltd | Health & social care | 2024 |
| FK Collective Limited | Wholesale & retail | 2026 |
| FK Furniture Ltd | Wholesale & retail | 2019 |
| FK Mini Markets Ltd | Wholesale & retail | 2025 |
| Fk-Twk Construction Ltd | Construction | 2024 |
| FK9 Services Ltd | Administrative & support | 2023 |
| FKA Accountants Ltd | Professional & scientific | 2022 |
| FKI Nuneaton Limited | Manufacturing | 1919 |
| FKK Ltd | Real estate | 2025 |
| FKM Consulting Ltd | Professional & scientific | 2025 |
| Fkmaw Ltd | Professional & scientific | 2020 |
| FKR (Broadway) Ltd | Hospitality | 2015 |
| FKS Investments | Financial services | 2021 |
| Fksmile Ltd | Health & social care | 2018 |
| FL Catering Limited | Hospitality | 2024 |
| FL Intercoop Global Systems Limited | Administrative & support | 2014 |
| Flackwell Express Ltd | Wholesale & retail | 2025 |
| Flackwell Homes Ltd | Real estate | 2021 |
| Flag Clock Limited | Wholesale & retail | 2026 |
| Flair Projects Management Ltd | Construction | 2023 |
| Flakes Desserts @ Lozells Limited | Hospitality | 2020 |
| Flam Group Ltd | Real estate | 2024 |
| Flame Control Environmental Services Ltd | Professional & scientific | 2019 |
| Flame Heating Services Limited | Manufacturing | 2015 |
| Flame Inn Karahi Ltd | Hospitality | 2026 |
| Flame Pentecostal Church of Cherubim & Seraphim Movement Birmingham UK Limited | Other services | 2017 |
| Flame Pizza (Mids) Ltd | Hospitality | 2025 |
| Flame Wellbeing Ltd | Health & social care | 2022 |
| Flamehaus Ltd | Hospitality | 2025 |
| Flames and Fragrance Ltd | Wholesale & retail | 2024 |
| Flamin' Patties Limited | Hospitality | 2018 |
| Flaming Grill Restaurant Ltd | Hospitality | 2025 |
| Flaming Plate Ltd | Hospitality | 2024 |
| Flammstand Limited | Wholesale & retail | 2025 |
| Flanagan Brickwork Ltd | Administrative & support | 2017 |
| Flannigan Estates Limited | Hospitality | 2010 |
| Flapjax Limited | Manufacturing | 2022 |
| Flare Corner Ltd | Administrative & support | 2026 |
| Flare Property Services Limited | Real estate | 1990 |
| Flaretot Limited | Professional & scientific | 1998 |
| Flash Back Events Ltd | Arts & recreation | 2023 |
| Flash Cleaning Services (FCS) Ltd | Administrative & support | 2024 |
| Flash Dream Limited | Real estate | 2020 |
| Flash Energy Solution Ltd | Manufacturing | 2023 |
| Flash Fashion Limited | Wholesale & retail | 2020 |
| Flash Fireworks Limited | Wholesale & retail | 2013 |
| Flash Fit UK Ltd | Health & social care | 2021 |
| Flash Home Clean Ltd | Administrative & support | 2025 |
| Flash Logistics Transport Ltd | Transport & logistics | 2019 |
| Flash Maintenance Ltd | Construction | 2026 |
| Flash Point Fitness UK Ltd | Health & social care | 2021 |
| Flash Recovery and Breakdown Service Ltd | Transport & logistics | 2023 |
| Flash Strom Limited | Information & communication | 2025 |
| Flash Supply Limited | Wholesale & retail | 2025 |
| Flash Wave Ltd | Wholesale & retail | 2024 |
| Flash'N Swift Ltd | Wholesale & retail | 2025 |
| Flashdemy Ltd | Wholesale & retail | 2024 |
| Flashfit Technologies Ltd | Wholesale & retail | 2026 |
| Flashmanagementservices Limited | Other services | 2017 |
| Flashpoint Technology Limited | Wholesale & retail | 2003 |
| Flat 14 IT Solution Ltd | Information & communication | 2025 |
| Flat 5 Anton Court 329 Hagley Road Birmingham B178ND Ltd | Real estate | 2024 |
| Flat 7 Clarice Court Limited | Households | 2021 |
| Flat CAP Consultancy Limited | Other services | 2018 |
| Flat CAP Hotels Limited | Hospitality | 2015 |
| Flat Move Removals Ltd | Transport & logistics | 2024 |
| Flat Pack Solutions Limited | Construction | 2005 |
| Flat Roof Solutions Epdm Ltd | Construction | 2020 |
| Flat Roofing Systems Midlands Ltd | Construction | 2025 |
| Flat Surface Ltd | Manufacturing | 2023 |