| Finer Retail Limited | Wholesale & retail | 2025 |
| Finerside Music & Media Group CIC | Information & communication | 2025 |
| Finespun Limited | Information & communication | 2016 |
| Finest Choice Ltd | Wholesale & retail | 2025 |
| Finestline Limited | Financial services | 2013 |
| Finetiq Solutions Ltd | Information & communication | 2025 |
| Finishing Touch (Yorkshire) Ltd | Other services | 2010 |
| Finite Arch Limited | Professional & scientific | 2026 |
| Finite Films Ltd | Information & communication | 2006 |
| Finite Solutions Limited | Wholesale & retail | 2005 |
| Finite Supplies Ltd | Wholesale & retail | 2018 |
| Finlay GEE Barbering Ltd | Other services | 2026 |
| Finn Commercial Solutions Limited | Professional & scientific | 2025 |
| Finn Communications Group Limited | Financial services | 2018 |
| Finn Communications Limited | Professional & scientific | 2005 |
| Finnbo Limited | Professional & scientific | 2020 |
| Finncara Consulting Ltd | Professional & scientific | 2018 |
| Finners Development Ltd | Information & communication | 2017 |
| Finni International Ltd | Health & social care | 2025 |
| Finsai Exchange Ltd | Financial services | 2023 |
| Finsai Ltd | Financial services | 2023 |
| Finsai Trade Ltd | Financial services | 2023 |
| Finsbury (Instruments) Limited | Manufacturing | 1978 |
| Finsbury Orthopaedics International Limited | Wholesale & retail | 2004 |
| Finsbury Orthopaedics Limited | Professional & scientific | 2002 |
| Finstat Limited | Information & communication | 2010 |
| Fintech North Limited | Administrative & support | 2017 |
| Finwise Accountants Limited | Professional & scientific | 2024 |
| Fiona Brown Safeguarding and Send Consultant Ltd | Education | 2016 |
| Fiona Day Consulting Limited | Administrative & support | 2018 |
| Fiona Hairdressing Limited | Other services | 2014 |
| Fiona Reid Dermatology Consultancy Limited | Health & social care | 2019 |
| Fiqow Limited | Health & social care | 2019 |
| Firas Logistics Ltd | Transport & logistics | 2025 |
| Firasa Technology Ltd | Professional & scientific | 2022 |
| Fire & Safety Advisory Ltd | Professional & scientific | 2023 |
| Fire and Sound Solutions Group Ltd | Financial services | 2019 |
| Fire Door Spray Solutions Ltd | Manufacturing | 2026 |
| Fire Ingenuity LLP | | 2009 |
| Fire Prevent Limited | Professional & scientific | 2016 |
| Fire Solution Ltd | Construction | 2024 |
| Fire Wood Holding Ltd | Financial services | 2025 |
| FIRE4 Systems UK Limited | Information & communication | 2006 |
| Firecloud Partnership Ltd | Wholesale & retail | 2013 |
| Firecrest Construction Limited | Construction | 2007 |
| Firecrest Properties Ltd | Real estate | 2021 |
| Firefight ABC Ltd | Arts & recreation | 2024 |
| Firefly Compliance Management Ltd | Professional & scientific | 2024 |
| Firefly Elektronics Ltd. | Manufacturing | 2024 |
| Fireoff Ltd | Construction | 2025 |
| Firesecuresolutions Limited | Public administration | 2024 |
| Firesharp Engineering Limited | Administrative & support | 2008 |
| Firevolt Limited | Information & communication | 2010 |
| FIRM5 Community CIC | Education | 2026 |
| Firnley Properties Limited | Real estate | 1950 |
| Firnside Properties Ltd | Real estate | 2023 |
| First 1 Event Security Limited | Administrative & support | 2018 |
| First Actuarial LLP | | 2009 |
| First Angels Healthcare Limited | Extraterritorial | 2016 |
| First Avenue Management Company Limited | Extraterritorial | 2008 |
| First Born Coffee Limited | Hospitality | 2026 |
| First Care (Yorkshire) Ltd | Health & social care | 2022 |
| First Choice Car Sales Ltd | Wholesale & retail | 2019 |
| First Class Canine Travel Ltd | Transport & logistics | 2021 |
| First Class Fibre Limited | Construction | 2017 |
| First Class Learning (West Leeds) Ltd | Education | 2021 |
| First Class Roofing Yorkshire Ltd | Construction | 2019 |
| First Class Sales Group Ltd | Other services | 2026 |
| First Contact Logistics Ltd | Transport & logistics | 2026 |
| First Core Ltd | Administrative & support | 2026 |
| First E11EVEN Sports Management Limited | Extraterritorial | 2010 |
| First Employee Benefits Limited | Extraterritorial | 2025 |
| First Event 2008 Limited | Administrative & support | 2008 |
| First Event Limited | Extraterritorial | 1999 |
| First Event Trustees Limited | Administrative & support | 2021 |
| First Feet Ltd | Wholesale & retail | 2011 |
| First Floor Hairdressing Limited | Other services | 2002 |
| First for Leasing Limited | Financial services | 2008 |
| First Garage Doors Ltd | Construction | 2018 |
| First Graphic Machinery Limited | Wholesale & retail | 2004 |
| First Heating and Plumbing Limited | Construction | 2020 |
| First IFA Limited | Extraterritorial | 2025 |
| First Investment Consulting Limited | Extraterritorial | 2025 |
| First MAN Ltd | Professional & scientific | 2015 |
| First Medallion Group Ltd | Hospitality | 2024 |
| First Media TV Ltd | Information & communication | 2014 |
| First Medical Indemnity Limited | Financial services | 2025 |
| First Notes Ltd | Education | 2023 |
| First Pearl Ltd | Wholesale & retail | 2022 |
| First Plastering Limited | Construction | 2020 |
| First Power & Surge Protection Limited | Manufacturing | 2009 |
| First Product Protection Limited | Financial services | 2025 |
| First Regulated Services Limited | Financial services | 2022 |
| First Response Fire and Security Limited | Administrative & support | 2025 |
| First Response Group Ltd | Administrative & support | 2007 |
| First Response Holdings Limited | Financial services | 2015 |
| First Slice Limited | Hospitality | 2026 |
| First Step Home Buying Ltd | Real estate | 2017 |
| First Time FIX Yorkshire Limited | Construction | 2025 |
| First West Yorkshire Limited | Transport & logistics | 1986 |