So right Liz! The sneaky little ratbag wear ordinary clothing and no hiviz vests and cameras in pockets. Seen it,done it and got the tee-shirt here in Liverpool while the police let you park on double yellow lines if there's no other place.. However, if you get caught don't pay it as I did as you admit the offence. Contact your MP. My disabled partner got done Christmas eve. What sort of person revels in a job like that ...