- Cabs of Rugby
- Call A Car
- Call Line Private Hire
- Cars 4 U
- Castle Cars of Warwick
- Catteralls Coaches (Portrest Ltd)
- Chambray
- CitiTaxis Services (Coventry) Ltd
- CJH of Shottery
- Colcab
- Coleshill Cars Ltd
- Compass Cabs Ltd (Rugby)
- Compass Taxis (Coventry)
- County Cars 2003
- Coventry Minibuses Ltd
- Crown Cars Warwickshire
- Crown Taxis (Nuneaton)
- Crystal Taxis