To restore the freedom of adults to pusue their own sexual tastes as they think fit and free from persecution by the state.
Repeal this unnecessary legislation. Criminalising the possession of images of sexual acts between adults is an intrusion on the liberty of individuals. The measure was based on one tragedy (Coutts) and is a typical example of "something must be done" legislation.
It has no parallel is any other free western nation. It is a measure by authoritarian Labour at its worst. You might as well ban the Bible because of the Bible John murders in Glasgow in the 1960s.