Never heard of rain ice then? Relatively (and thankfully) quite rare in UK but by far the most dangerous of all to light aircraft and helicopters.
Skytorque
I guess my point (and others) was we can dream up circumstances where icing might occur but we are discussing a QCX, the student is under the "supervision" of his instructor and flying over a short distance - he really doesnt and shouldnt need to worry about icing because his isntructor is not going to place him in a situation it is remotely likely to occur.
I think he wants reassurance, and I think we can reassure him, while agreeing that once he is on his own there are some useful observations in this thread of exceptional circumstances where ice could be an issue even in VMC.