Chapter I of the Competition Act 1998 prohibits agreements, decisions and concerted practices between or among undertakings or associations of undertakings which have as their object or effect the restriction, distortion or prevention of competition within the UK and which affect trade within the UK. Arrangements which infringe the Chapter I prohibition are void and unenforceable. In addition, participants to such arrangements are exposed to damages claims from third parties who have been detrimentally affected and, most significantly, can be fined up to a maximum of 10% of their worldwide turnover.