| Booze 'N' News Limited | Wholesale & retail | 2003 |
| Bowdler Project Management Ltd | Professional & scientific | 2006 |
| BP Industrial Door & Loading Bay Systems Limited | Manufacturing | 2007 |
| BPH Engineering Services Limited | Manufacturing | 2007 |
| BR Aysgarth Limited | Hospitality | 2021 |
| BR Priest House Limited | Hospitality | 2021 |
| BR Subco 3 Limited | Hospitality | 2021 |
| Bradway Pet Shop Limited | Wholesale & retail | 2003 |
| Bradwell Skip Services Limited | Water & waste | 1999 |
| Brcm Limited | Hospitality | 2005 |
| Bridewell U.K. Limited | Administrative & support | 1994 |
| Brightspark Entertainment Limited | Information & communication | 2003 |
| Brimatec Limited | Professional & scientific | 2002 |
| Brix Property Development Limited | Construction | 2007 |
| Brocco Limited | Households | 1999 |
| Brook Leisure Retreats Limited | Hospitality | 2021 |
| Building Design U.K. Limited | Professional & scientific | 1991 |
| Building Link Design Limited | Professional & scientific | 2002 |
| Burcroft Physio Limited | Other services | 2007 |
| Burngreave Building Company Ltd | Construction | 2005 |
| Butcher and Powell Limited | Construction | 2002 |
| C & R Penrose Limited | Administrative & support | 2003 |
| C L & H Developments Limited | Financial services | 2005 |
| C M G Security Limited | Manufacturing | 2004 |
| C W Commercials Limited | Wholesale & retail | 2004 |
| C.D.E. Systems Ltd | Information & communication | 1999 |
| Calibration Solutions Limited | Professional & scientific | 2007 |
| Camak Development Limited | Real estate | 2006 |
| Camelot Furniture Limited | Manufacturing | 2002 |
| Candy Contracts (UK) Limited | Administrative & support | 2007 |
| Canebrake Developments Limited | Construction | 2001 |
| Capland Properties Limited | Real estate | 1999 |
| Carnalls Auto Centre Ltd | Wholesale & retail | 2003 |
| Casemark Limited | Information & communication | 1988 |
| Cash Quick 4 Property Limited | Real estate | 2008 |
| CEK Consulting Ltd | Professional & scientific | 2011 |
| Celtic Properties Ltd. | Real estate | 1996 |
| Celtic Services Ltd | Manufacturing | 2005 |
| Cemetery Road Motor Company Limited | Wholesale & retail | 2003 |
| Central Service Garage Limited | Wholesale & retail | 2003 |
| CGA Consultants Limited | Information & communication | 2007 |
| Chadwicks Estate Agents Limited | Real estate | 2017 |
| Chainbreaker (Barnsley) Limited | Real estate | 2005 |
| Championship Hospitality Solutions Limited | Hospitality | 2005 |
| Chandlers Archives Ltd | Administrative & support | 2003 |
| Chardel & Co. Ltd | Hospitality | 2008 |
| Charles James Consulting Ltd | Professional & scientific | 2007 |
| Chartwell Home Improvement Companies Limited | | 1986 |
| Chesterfield Motor Company Limited | Professional & scientific | 1986 |
| Chief Assessments Limited | Administrative & support | 2000 |
| Chinese Laundry (Barnsley) Limited | Other services | 2025 |
| Chiro First (UK) Ltd | Health & social care | 2004 |
| Chris Frizzell Dentures Ltd | Professional & scientific | 2007 |
| Chrysalis Skin Works Limited | Other services | 2016 |
| Chua Lowe (JB) Limited | Professional & scientific | 2002 |
| Chua Lowe Limited | Professional & scientific | 2002 |
| Churchills Rental Management Limited | Real estate | 2003 |
| Circassian Limited | Professional & scientific | 1974 |
| Citrus Rooms Limited | Hospitality | 2003 |
| City Building Services (Multi Task) Limited | Construction | 2006 |
| Clean Vent Services Limited | Administrative & support | 2005 |
| Cleden Holdings Limited | Professional & scientific | 2005 |
| Club Rackets Limited | Wholesale & retail | 2009 |
| Cocoa Confectionary Limited | Wholesale & retail | 2006 |
| Cole Construction Limited | | 2006 |
| Collegiate Developments Limited | Real estate | 2004 |
| Commedia Sheffield | Information & communication | 2001 |
| Compass Holdings Limited | Professional & scientific | 1983 |
| Computer Sales Limited | Professional & scientific | 1997 |
| Condor Welding Supplies Limited | | 1986 |
| Connect Electrical Consultants Limited | Construction | 1999 |
| Continental Waterways Limited | Administrative & support | 1972 |
| Corner Fridge Company Limited | Wholesale & retail | 2001 |
| Corner Kitchens Limited | Wholesale & retail | 2004 |
| Corniche Homes Limited | Professional & scientific | 2001 |
| Corporate Business Systems Ltd | Professional & scientific | 2003 |
| Cosmic Colours Limited | Wholesale & retail | 2007 |
| Cottage Properties Limited | Professional & scientific | 1999 |
| Craig Hurdley Builders Limited | Construction | 2007 |
| Creator Hair Limited | Real estate | 2000 |
| Cricket Inn Pet and Animal Feeds Ltd | Wholesale & retail | 2006 |
| Crista Enterprises Limited | | 1988 |
| Crossbow Developments Limited | Professional & scientific | 1996 |
| Crossgates UK Limited | Administrative & support | 2007 |
| Crystal Conversions | | 1996 |
| Culver International Limited | Manufacturing | 2001 |
| Cupola Contemporary Art Ltd | Arts & recreation | 2004 |
| Cutlery and Allied Trades Research Association | Manufacturing | 1962 |
| D & B Fencing Limited | Manufacturing | 2007 |
| D R Baling Wire Manufacturers Limited | Manufacturing | 2002 |
| D R Booth and Associates Ltd | Construction | 2007 |
| D Richardson and Sons Limited | Construction | 2003 |
| D W Autos Limited | Wholesale & retail | 2002 |
| D W S Carpentry Limited | Manufacturing | 2004 |
| D.A.C. Recruitment Limited | Wholesale & retail | 2002 |
| D.J. Carnell (Holdings) Limited | | 1986 |
| DAB Contract Services Ltd. | Construction | 1999 |
| DAK Roofing Limited | Construction | 2006 |
| Danum Developments Ltd | Construction | 2001 |
| Danum Financial Services Limited | Financial services | 2001 |