The European Parliament has been struggling with the European Commission over its power and influence over the reform of areas ranging from agriculture to financial services. In the past year, it has gained significantly at the expense of the EC as a result of EU enlargement and the rejection of the constitution, and is flexing its muscles.

The EU's expansion from 15 to 25 members and the arrival of a fresh batch of MEPs after elections in June 2004 brought a new purpose to an institution that has suffered from being regarded as little more than a talking shop or a "gravy train" for its 732 members after scandals over expenses and perks.