Stay the fook away from North wales then. Not only does Plod have mini lab fuel testing but first week of every month they have a Multi Agency vehicle inspection check. which usually involves PLOD, HMRC, VOSA, DWP and Court fines officer and they do everything they possibly can to give you at least one fixed penalty. They did one stop check, outside Ysbyty Gwynedd and stopped anyone that looked like a nurse. and everyone they stopped that was on her way to visit a patient got a fixed penalty for??
Failing to have a no smoking sticker in their works vehicle.. Caused a right uproar..
running illegal fuel is a 100% sure way to get ya vehicle siezed. having ya tools on ya and no business insurance is another, and will also get ya quizzed by DWP to make sure ya not on dole as well.