| Chong Consulting Co. Limited | Information & communication | 2014 |
| Chong Qing Kitchen Ltd | Hospitality | 2024 |
| Chonis Inc. Limited | Hospitality | 2018 |
| Chopshopcnc Ltd | Manufacturing | 2014 |
| Chor Ltd | Administrative & support | 2016 |
| Chorus Angelorum Productions Limited | Arts & recreation | 2006 |
| Chorus Education Trust | Education | 2012 |
| Choudharyz Seller Limited | Wholesale & retail | 2025 |
| Chox Limited | Hospitality | 2021 |
| CHP Polymers Ltd | Water & waste | 2021 |
| CHPT3 Limited | Professional & scientific | 2015 |
| Chris Aldridge Ltd | Transport & logistics | 2015 |
| Chris Barclay Coaching Ltd | Education | 2023 |
| Chris Bembridge Rail Limited | Transport & logistics | 2015 |
| Chris Burley Investments Limited | Administrative & support | 2019 |
| Chris Chappell Limited | Financial services | 2019 |
| Chris Charlesworth Tiling Limited | Construction | 2023 |
| Chris Egglestone Limited | Administrative & support | 2009 |
| Chris Gothard Architectural Ltd | Professional & scientific | 2014 |
| Chris Head Design Limited | Professional & scientific | 2017 |
| Chris Lawrance Publicity Limited | Professional & scientific | 2016 |
| Chris Mason Performance Ltd | Arts & recreation | 2013 |
| Chris Newton Ceramics Limited | Professional & scientific | 2011 |
| Chris Noyland Bill Rhodes Limited | Wholesale & retail | 1988 |
| Chris Reed Transport Limited | Transport & logistics | 2002 |
| Chris Rudge Electrical Contracting Limited | Construction | 2005 |
| Chris Sloss Design Limited | Professional & scientific | 2018 |
| Chris Wells Design Limited | Administrative & support | 2014 |
| Chris White Grab Hire Limited | Water & waste | 2025 |
| Chrisdymond Ltd | Professional & scientific | 2011 |
| Christ Church Central | Other services | 2004 |
| Christa Enterprise Limited | Health & social care | 2023 |
| Christal Windows Ltd | Manufacturing | 2017 |
| Christian Family Schools Limited | Education | 1987 |
| Christian Film and Media Events C.I.C. | Administrative & support | 2020 |
| Christian Taylor Limited | Information & communication | 2012 |
| Christine Pratt Associates Limited | Professional & scientific | 2000 |
| Christmas Coffee Limited | Wholesale & retail | 2025 |
| Christmas Enterprises Limited | Real estate | 2012 |
| Christmasme Limited | Information & communication | 2025 |
| Christopher Connor Ltd | Wholesale & retail | 2019 |
| Christopher P O'Connor Limited | Administrative & support | 2023 |
| Christopher Short Limited | Construction | 2006 |
| Chroma Live Ltd | Information & communication | 2025 |
| Chromapixel Graphics Ltd | Professional & scientific | 2022 |
| Chromastock Limited | Information & communication | 2013 |
| Chromex Services Limited | Households | 2017 |
| Chronoclasm Limited | Arts & recreation | 2017 |
| Chronomarket Limited | Wholesale & retail | 2019 |
| Chronos Infinite Limited | Wholesale & retail | 2019 |
| Chronosense Limited | Information & communication | 2026 |
| Chrysalis Associates Limited | Health & social care | 2006 |
| Chrysalis Consortium Limited | Health & social care | 2012 |
| Chuan XIN Limited | Hospitality | 2022 |
| Chuba Housing Ltd | Real estate | 2023 |
| Chuba Logistics Ltd | Transport & logistics | 2024 |
| Chugga Dawg Ltd | Hospitality | 2024 |
| Chughtai and Co Ltd | Professional & scientific | 2021 |
| Chukfamily Ltd | Health & social care | 2026 |
| Chukswrld Limited | Transport & logistics | 2026 |
| Chula Beauty Ltd | Other services | 2019 |
| Chulu Pharmacy Limited | Wholesale & retail | 2006 |
| Chunky Hedgehogs Limited | Arts & recreation | 2024 |
| Church Army(The) | Hospitality | 1892 |
| Church in Sheffield Limited | Other services | 2016 |
| Church Street Court Management Limited | Households | 2006 |
| Church Superstore Limited | Wholesale & retail | 2022 |
| Church View (Phase 2 Apartments) Management Company Limited | Households | 2003 |
| Church View Apartments (Phase 1) Management Company Limited | Households | 2002 |
| Church View Apartments (Phase 3) Management Company Limited | Households | 2005 |
| Church View Commercials Limited | Wholesale & retail | 2025 |
| Church View Motors Ltd | Wholesale & retail | 2021 |
| Church View Rooms Ltd | Hospitality | 2023 |
| Church Walk Health Care Limited | Health & social care | 2007 |
| Church Warsop Investments Limited | Real estate | 2019 |
| Churchfields (Ecclesfield) Management Limited | Households | 2002 |
| Churchgate Partners Limited | Hospitality | 2024 |
| Churchill Designs Ltd | Professional & scientific | 2014 |
| Churchill Mint Sheffield Limited (the) | Professional & scientific | 1972 |
| Churchill's Fish Bar Ltd | Hospitality | 2025 |
| Churchview Services Ltd | Professional & scientific | 2021 |
| Churnet Valley Inns Limited | Hospitality | 2023 |
| Chutney Gleadless Limited | Hospitality | 2016 |
| Chutney Media Agency Limited | Information & communication | 1998 |
| CHWAQAS3340 Ltd | Wholesale & retail | 2024 |
| Chydonhealthcareservices Ltd | Administrative & support | 2019 |
| CHZ Dish Dash Ltd | Hospitality | 2026 |
| Chéz Giraffe Limited | Real estate | 2022 |
| Ciallo Ltd | Information & communication | 2025 |
| Ciao Cameras Limited | Wholesale & retail | 2025 |
| Ciarrai Construction Ltd | Construction | 2011 |
| Ciauru Limited | Hospitality | 2025 |
| Cibo Productions Limited | Hospitality | 2019 |
| Cici Beds Limited | Manufacturing | 2023 |
| Ciderman UK Ltd | Wholesale & retail | 2023 |
| CIL Production Limited | Professional & scientific | 2021 |
| Cinalli Flats Ltd | Real estate | 2018 |
| Cinarpasa Ltd | Hospitality | 2024 |
| Cinca Florin Ltd | Transport & logistics | 2016 |
| Cinch Contracting Services Ltd | Administrative & support | 2014 |