Renewables Company Index - C
- C Soar & Sons (Uk) Ltd - Barnsley
- C & C Waste Services - London
- C A Recycling Ltd - Tredegar
- C P R Services - Highbridge
- Cambridge Solar Ltd - Cambridge
- Cardboard Man - Dorchester
- Carrier Bag Shop - London
- Carwood Commodities Ltd - Sheffield
- Casepak (Midlands) Ltd - Leicester
- Caton Recycling Ltd - Nuneaton
- Celsur Plastics Ltd - Staines
- Changeworks Recycling - Edinburgh
- Charmwood Discount Centre - Coventry
- Chas Storer Ltd - Potters Bar
- Cheshire Packaging Ltd - Hyde
- Chilvers Reprographics - Milton Keynes
- City Drilling - Farnborough
Clean Earth Energy Ltd - Wadebridge- Cleversolar UK - Braintree
- Closed Loop Recycling - Deeside
- Coast2Coast Computers - Littlehampton
- Community Central Recycle Services Ltd - Willenhall
- Community Waste Recycling Ltd (Chipping Norton) - Chipping Norton
- Complete Packaging and Consumables Ltd - Birmingham
- Complete Recycling Solutions - Peterborough
- Copak Services Ltd - Manchester
- Corporate Green Ltd - Northwich
- Country Style Recycling - Lewes
- Countrystyle Group - Folkestone
- Countrystyle Group - Maidstone
- Court Auto Dismantlers Ltd - Birmingham
- Craft - Llanon
- CRB Eco Energy - Malvern
- Critical Power Supplies Ltd - Thame
- Crj Services Ltd - Knutsford
- Cumberlow Compost - Buntingford
- Cumbria Waste Management Ltd (Workington) - Workington
- Cumbria Waste Recycling - Workington
- Custom Transformers Ltd - Malmesbury