yeah, it is, they had been following looking for an excuse to pull us so we filtered through traffic and left them. i suppose if they were really bothered they would have chased.
it is as long as: 1. the traffic is moving at less than 15mph if you are crossing a solid white line 2. you are doing so in a controlled safe manner 3. you are sticking to road laws whilst doing the manouver bit of a grey area though as far as the old bill is concerned.