I dont know if any of you saw a documentary a few months ago with the guy from house of horrors, he and his mate dressed up as tinkers and went to a few scrapyards to asses how many are following government guidelines.
They weighed in the following

1. Collection of road name signs.
2. collection of road marking signs (no entry, 40 mph ect)
3. collection of cast manhole covers and roadside drain covers.

and get this

4. A full size council bus shelter c/w seats and bus stop sign, all ground off at floor level.

No questions asked.