| | CALDAN Conveyor A/S | Redcar |
| | CallTec Services Ltd | MONKWOOD |
| | Caltech | Dundee |
| | Cambsteel Ltd | Huntingdon |
| | CAN INDUSTRIAL INC. | SHANGHAI |
| | Canovate Elektronik | Istanbul |
 | Capsule Hollow Gelatin capsule | Tianjin |
| | Caraustar ICPG Ltd | Leyland |
| Carnhill Transformers Ltd | Huntingdon |
| | caterworkforce | Purley |
| | C B Systems (UK) Ltd | Castleford |
| | CE-AIR International | Hyde |
| | Cemaitex | Baku |
| | Central Communication Products Ltd | Warwick |
| Centre MET, ltd | Moscow |
| | Ceratech Electronic Ltd | Alton |
| Cetronic Power Solutions Ltd | Stanstead Abbotts |
| | Champion Surgical Co | Sialkot |
| | Chaneco | Northampton |
| | ChangBao Communication Cable&Wire Co.,Ltd. | FoShan |
| Changsha Active Ingredients Group,Inc. | Changsha |
| | Changsha Nutramax Inc | Changsha |
| Changsha Nutramax Inc. | Changsha |
| | Changsha O.H.I. | Changsha |
| | Changzhou Lianxin Chemical Plant Ltd. | Changzhou |
| Chase Equipment | Coseley |
| Chem4s Chemicals | hangzhou |
| | Chemaster International Inc. | qingdao |
| | chem colour international | mumbai |
| | Chengdu X&W Optics | Chengdu |
| Chenghai Jinming Toys Arts & Crafts Co.,Ltd. | Chenghai |
| | CHENGHAI MAYA TOYS CO.,LTD | SHANTOU |
| Chenghai Pengcheng Toys Ind. Co.,Ltd. | Guangdong |
| | Cherry Tree Machines Ltd | Blackburn |
| C & H Howe Limited | Staffordshire |
| | Chiltern Adhesive Products | Chesham |
| China Beijing sanew cable Co., LTD | Beijing |
| china embroidery machine zhuji yuemei | zhuji |
| | China Herbal Extract Company | Hangzhou |
| | CHINA JIANGSU INTERNATIONAL GROUP | NANJING |
| china medicines on-line store | jinan |
| | China national Silk Imp.&Exp.Wuxi Corp.Ltd | Wuxi Jiangsu |
| ChinaTech Peptide Co.,Ltd. | Mudu |
| | China Tianxin Industries Inc. | - |
| | Chiviott Machine Tools | Arundel |
| | Chong Tat Electronics Technology Co. Ltd., | Shenzhen |
| | Churchill Controls Ltd | Wokingham |
| | Cimec srl | Vicenza |
| | Claude Lyons Ltd | Waltham Cross |
| | click4barcodes | telford |
| | CMART PEEPUL TRADING LTD | DERBY |
| CMSS Conveyor & Machine | Nottingham |
| | CMSS Conveyor & Machine | Long Eaton |
| | Cobra Electronics Ltd | Bordon |
| | Commercial bearings limited | Birmingham |
| | communications Audit UK Limited | Cheltenham |
| | Compass Finance Group plc | Bury |
| | Component Force Limited | Birling, Kent |
| | Computercleaners Ltd | Halesowen |
| | ComputerDirect UK | Newcastle Upon Tyne |
| | Computerdirect uk | Newcastle upon Tyne |
| Computer Solutions Ltd | Addlestone |
| | Computers Online | Leicester |
| | Concurrent Technologies PLC | Colchester |
| Conet Industry | Qingdao |
| | Connexxion UK Ltd | Abertillery |
| | Construction Technical Services | Penzance |
| | Consult Lighting | Barnsley |
| | Control Panel Consulting | FAREHAM |
| Converteam Ltd | Rugby |
| Converteam Ltd. | Rugby |
| Cookware UK ltd | Portsmouth |
| | Copper and Engineering Services (Lincolnshire) Ltd | Scunthorpe |
| | Corsair Computer Systems Ltd | Liverpool |
| | Corston Sinclair Ltd | East Kilbride |
| | COTEK Electronic Ind. Co., Ltd. | Pa-Teh |
| CPS (Distribution) | Farnborough |
| CR Clarke and Co (UK) Ltd | Ammanford |
| | CROWN WATER HEATERS LTD | WOLVERHAMPTON |
| | Croylek Ltd | Coulsdon |
| CSE Manufactory Co., Ltd | Bangkok |
| CT Production ltd | Poole |
| | Cupboards Direct Ltd | NORTHAMPTON |
