Likewise, there are many qualifications secured within the treaty regarding enhanced co-operation. It cannot be used in all circumstances. It can only be used as a last resort. It requires the active co-operation of eight member states and there must be at least another six who assent to its use within a community or union of 27. There are plenty of safeguards. Why do we always assume that we will be among those who would not choose enhanced co-operation? We chose to be part of ERM, EMS and the single currency. We did not choose to be part of Schengen. I regret that sometimes, but we did not. It cannot be argued that our membership of the EU was diminished by not participating in Schengen.