You boys need to import some of our good ole fashion rednecks to the UK. Give them a pickup with a tow hitch, a length of chain and watch your speed cameras disappear.
I lived in the Los Angeles South Bay for a number of years and there was one particular freeway traffic signal that the CHP used to use to give a ton of tickets. It truly served no other purpose. The damn thing was on at the stupidest times (usually when there was not another car on the road) and stayed red forever. One day, it just disappeared leaving only a hole.
A few weeks later, it reappeared in a more robust, more fortified, version. Within days, it too disappeared leaving a much bigger hole. Of course, the State had to have its way, so it installed the grand daddy of all traffic signals. The concrete slab housing this behemoth was at least 6' by 6' and probably 2' thick reinforced concrete. This time, surely it could not be yanked out - and they were right. It took some high explosives to extricate that signal. The resulting hole was quite impressive. They gave up on the signal. After all, everyone knew it served no purpose except to provide the CHP with a revenue stream.
