because its 30 for a reason and in most 30 zones its dangerous to overtake. Not saying i stick to exactly 30 all the time, but i dont feel the need to sit up someones arse just because i want to speed and they dont.

They run up back of car and they pay/get to meet my steering lock close up!

Also in MOST cases even if you did let them overtake, theyve got no where to go due to traffic density. Its just them driving like dicks. Maybe if you get them mad and upset maybe one day theyll think "doh why i always pissed off at other motorists? erm maybe cos i drive like a cunt innit??"

And if not the extra anger and rage will hopefully contribute to an earlier heart attack/anuerism