Well I haven't really noticed any particularly. I drive to London most days so car meets a lot of traffic congestion as you might expect and can run quite hot . ie up to 95 but always goes back down. When I reach home from London the fans sometimes kick in but soon go off.
They said they noticed some 'pink' staining at bottom of engine but coolant level seems OK maybe losing a little given the driving I do.
Getting out of the car recently I felt quite a lot of heat from the front but I put it down to a break/leak in the exhaust which needed some work for the MOT.
How would leaking head gaskets usually show up or be identified?
Rough running would be a start
Pink staining is a tell tale of coolant, but this could be left from the water pump change or equally from the HBV... that said, if it doesn't require topping up, then it isn't losing or using any. Simples.
Temp and fan behaviour sounds normal, and the residual heat from a 3.2 can de ice entire roads, so again, normal.