| C and S Ruppert Limited | Hospitality | 2024 |
| C and T Logistics Ltd | Transport & logistics | 2026 |
| C Bernardo SAP Services Ltd | Information & communication | 2026 |
| C C H Cable Services Ltd | Construction | 2021 |
| C C J Accommodation Ltd | Hospitality | 2025 |
| C Clewlow Roofing Ltd | Construction | 2026 |
| C F Roofing (NW) Ltd | Construction | 2014 |
| C Fresh (Blackpool) Ltd | Hospitality | 2026 |
| C Green Properties Limited | Real estate | 2017 |
| C H Boswell Management Ltd | Financial services | 2018 |
| C Hall Limited | Professional & scientific | 2019 |
| C J Cooper Consultancy Ltd | Information & communication | 2019 |
| C J Freight Limited | Transport & logistics | 2013 |
| C J Scoops Ltd | Wholesale & retail | 2025 |
| C K Marquees and Furniture Hire Ltd | Administrative & support | 2023 |
| C Kyle Holdings Ltd | Health & social care | 2015 |
| C Laminates Limited | Construction | 2024 |
| C M Roofing and Upvc Ltd | Construction | 2025 |
| C N Elegant Hire Ltd | Hospitality | 2026 |
| C Pain Trucking Ltd | Transport & logistics | 2025 |
| C R Collings Engineering Consultancy Limited | Administrative & support | 2014 |
| C S J Property Holdings Ltd | Real estate | 2023 |
| C Shape Limited | Real estate | 2012 |
| C T Yates Limited | Real estate | 2018 |
| C&C A872 Limited | Extraterritorial | 2021 |
| C&K Reece Limited | Real estate | 2018 |
| C&M Kebab Ltd | Hospitality | 2026 |
| C&M Technician Services Ltd | Administrative & support | 2023 |
| C&S Groceries Ltd | Wholesale & retail | 2025 |
| C&S Seafood Ltd | Wholesale & retail | 2022 |
| C-B Motorz Ltd | Wholesale & retail | 2025 |
| C.D.S. Precision Engineering Limited | Manufacturing | 2002 |
| C.G Beauty and Aesthetics Limited | Other services | 2020 |
| C.H.A.G Property Investments Limited | Real estate | 2025 |
| C.Hesketh & Sons Limited | Wholesale & retail | 1961 |
| C.I.P. (UK) Limited | Construction | 1992 |
| C.J.Bullock Electrical Services Limited | Construction | 2018 |
| C.J.Hassey Logistics Ltd | Transport & logistics | 2019 |
| C.Morrell (Engineers) Limited | | 1950 |
| C.P.M (NW) Limited | Construction | 2011 |
| C2SEA Marine Ltd | Other services | 2024 |
| C75 Limited | Construction | 2025 |
| CA Green Consulting Ltd | Information & communication | 2019 |
| CA Motors Limited | Wholesale & retail | 2012 |
| CAB Coatings Ltd | Construction | 2026 |
| Cable Chutes (Blackpool) Limited | Arts & recreation | 1978 |
| Cable Chutes II Limited | Arts & recreation | 1907 |
| Cable Express Ltd | Wholesale & retail | 2019 |
| Cadence Solutions Limited | Information & communication | 2015 |
| Cadis Clinics Ltd | Health & social care | 2019 |
| Cafe 24 Blackpool Ltd | Hospitality | 2026 |
| Cafe at the Outlet Limited | Hospitality | 2025 |
| Cafe Meow Limited | Hospitality | 2020 |
| Cafe Oasis Ltd | Hospitality | 2025 |
| Cafe Retro Blackpool Ltd | Hospitality | 2025 |
| CAFE263 Ltd | Hospitality | 2022 |
| Caffe C Limited | Hospitality | 2016 |
| Cairn Software Limited | Information & communication | 2016 |
| Cake Box Blackpool Limited | Wholesale & retail | 2026 |
| Cake Cupid Ltd | Information & communication | 2020 |
| Calbrooke Maintenance Limited | Administrative & support | 2004 |
| Calcichui Ltd | Wholesale & retail | 2022 |
| Calcot Tech Ltd | Wholesale & retail | 2025 |
| Calculus Energy Limited | Professional & scientific | 2017 |
| Calder Court M.C. Ltd | Real estate | 2006 |
| Calder Products Ltd | Financial services | 2015 |
| Calibre Corporation Limited | Information & communication | 2017 |
| Call Connect Virtual Services Ltd | Administrative & support | 2024 |
| Call of Tranquillity Ltd. | Information & communication | 2016 |
| Calle Properties Limited | Real estate | 2019 |
| Callum James Electrical Limited | Construction | 2025 |
| Callwise AI Limited | Information & communication | 2026 |
| Calpin Compex Electrical Ltd | Manufacturing | 2018 |
| Calypso Enterprise Ltd | Hospitality | 2023 |
| Calzette Ltd | Construction | 2013 |
| CAM Property & Investments Ltd | Real estate | 2025 |
| Camco Drilling Ltd | Wholesale & retail | 2025 |
| Camcol Ltd | Information & communication | 2021 |
| Camm Property Ltd | Real estate | 2025 |
| Campbells Furniture Co Limited | Wholesale & retail | 2016 |
| Camptoo UK Ltd | Administrative & support | 2017 |
| Canberra Holiday Flats Limited | Extraterritorial | 2002 |
| Candel Supply Chain Solutions Ltd | Professional & scientific | 2022 |
| Candle Supplies NW Limited | Wholesale & retail | 2023 |
| Candy Corner Blackpool Limited | Wholesale & retail | 2019 |
| Candy House Events & Entertainments Limited | Arts & recreation | 2020 |
| Candy Swirls (UK) Limited | Manufacturing | 2007 |
| Cannaco Health Limited | Health & social care | 2019 |
| Cannon Specialist Vehicles Ltd | Wholesale & retail | 2025 |
| Canton Chef Blackpool Ltd | Hospitality | 2023 |
| Capeday Property Management Limited | Households | 1984 |
| Capernicus Limited | Professional & scientific | 2002 |
| Capital Collect Limited | Administrative & support | 2009 |
| Capital Estates Europe Limited | Real estate | 2015 |
| Cappo-Restaurants Ltd | Hospitality | 2022 |
| Capricorn Accountancy Limited | Professional & scientific | 2012 |
| Captain Cooks Snack Bar Ltd | Hospitality | 2021 |
| Car Charging (U.K) Limited | Construction | 2021 |
| Car Finance Group Limited | Financial services | 2022 |
| Car JAM UK Automotive Ltd | Wholesale & retail | 2024 |