European Competition Law is the set of laws and regulations governing market behaviour, particularly agreements and practices that restrict competition and the acquisition and use of market power. Its aim is to encourage competition by having one common harmonized market in the EEA.

EC competition law is based on Article 81 and Article 82 of the EC Treaty, supplemented by Council Regulation 1/2003 and the EC Merger Regulation. UK competition law is based on the Competition Act 1998 and the Enterprise Act 2002 (the Fair Trading Act 1973 has now been repealed in its entirety).

The following are notes compiled in 2007 for revision purposes on Article 81 and Article 82. It might not be complete or accurate and should only be used for educational or reference purposes only.