I received a ?120 fine (lucky me I paid in time and only had to pay ?60!), even though I had only nipped in a metre or so early, and despite the fact there were no buses and nobody 'before' me turned in after.

But I found out some insider info, the camera is there to be positioned at the cross section. To fine cars sitting in the yellow box, capture any accidents and ensure smooth running of the junction. VERY rarely is it positioned at the bus lane on Stansted Road, and when it is you will discover it is to boost money, generally at particular times of the month, as they know this is easy pickings. Not my words, I hasten to add.....