The "breaches of planning regulations" that the Tories are trying to make a big deal of have generally occurred where gypsy or other travellers have purchased patches of land in order to have somewhere to put their caravans, and have been refused planning permission to do so often on for very questionable reasons.

They have then gone ahead anyway and used the pitches.

This has occurred in a siutuation where the last Tory government abolished the duty of local authorities to provide suitable sites for travellers - a duty which they had for the most part ignored, without suffering any kind of penalty. Tories are very selective about what "breaches of regulations" they believe should be proescuted. (Labour hasn't much to boast about - they've been in power since 1997 and they've done nothing to reverse the Tory ban.)