I was sat earlier on a heavily-delayed class 800, on the jumpseats behind the drivers cab. When the trolley appeared, the staff member with the trolley asked me to move as I "could cause a distraction to the driver". I was sat in silence (and sitting there because I needed quiet), but fair enough.
As this conversation was happening, the other staff member with the trolley knocked on and subsequently entered the cab to see if the driver needed refreshments, and had a quick chat - while we were proceeding at linespeed.
This surprises me somewhat, given I've read recent discussions on here that suggest that, at some TOCs, the driver can't even contact the signaller while moving, and that staff aren't allowed in the cab at many TOCs for non-operational reasons.
Is this normal and common practice?