You could be forgiven for thinking that the new Prevention of Terrorism Act (PTA), the result of an almost unprecedented to and fro between the Commons and Lords, is a much-watered down version of the Government's proposals for the replacement of the heavily criticised detention powers in the Anti-Terrorism, Crime and Security Act.
But the parliamentary tussles perhaps tell us more about the shortcomings of most Westminster debates than about any actual gains made by defenders of…