A different solution to the Computer Misuse Act problem
I would prefer it to be the case that prosecutions under the CMA could only be made after explicit permission had been sought and obtained from the Attorney General. Most crimes today involve computers in some shape or form either as evidence gatherers or as tools for executing the crime. The CMA should be available as a "sweeping up" measure. This would effectively mean that any public interest defences had been considered and rejected by the Attorney General so that permission was given to allow the prosecution to go ahead.