Did it definitely have a pantograph? The 3rd pan well on the 11 coach sets doesn't have a pantograph fitted although there are some other bits of equipment.
That joke will be getting added to the list of things the voice tells you not to flush... speaking of which, have Avanti kept the talking bog?I thought every coach had a Pan in the toilet
So if there is no pantograph, out of interest, whey was coach U built with a well for one?