I did a tuning arvo the previous Friday, and had the impression that drift on the skidpan was tolerated. On the road circuit, power oversteer on exit was also fine, but setting up the car to be drifting on entry into the corner (on the road circuit) would result in you getting one warning, then kicked off.

Basically I got the impression it's because the RAC doesn't want their road surface left with black marks because it doesn't fit their image.

This footage all looks like it was on the skidpan, so shouldn't have been a huge issue.