The idea
All criminal offences should be repealed, which have not lead to any prosecutions in a period of (say) four years.
Why is it important?
A number of criminal offences introduced since 1997 appear to have resulted in absolutely no convictions. For example, section 13 of the Terrorism Act 2000 makes it unlawful to wear a uniform indicating membership of a banned, terrorist organisation.
(There are good common sense reasons why there have been no prosectuions. The penalty for membership of a terrorist organisation is 10 years. Unsurprisingly, nobody wants to wear a uniform saying they are a member of a group – if membership will lead to a long prison sentence).
Since 2000, as far as I can see there have been no successful prosecutions under this section of this Act. In those circumstances, shouldn't it be repealed?