Or perhaps if that unless they take the line that 'everywhere that is not forbidden is permitted', there won't actually be anywhere to park?

I agree but surely they could unleash some of the wardens for the task

The Council are putting more double yellow lines at junctions near where I live.

Only yesterday about 4pm saw 4 x 4 parked on Perry Vale in the dodgy place mentioned before. Drivers having to swerve into oncoming lane to avoid.Surely Police should be booking these people who are liable to cause an accident

They have probably delegated that duty to traffic wardens, who only give tickets to vehicles parked on yellow or red lines.