Well,
Some excellent comments, and some entertainment too. I shall look first at the insulating, and, as we have ducted air from beside the radiator already, ways of ducting it cooler. The Extenders on the bonnet catches sound interesting, and having never seen these, will do the obvious google search of same. John's link had ideas worth thinking about too.
Mr11Mog's suggestion of sock removal I use already, so thanks for that.
Tuftie66's suggestion of moving to the UK I would look at, but having had a grandfather earn his DSO in France in WW!!, numerous uncles and older friends shot at in North Africa and Europe, and even a cousin fly Wellingtons and Lancs for the RAF, all to save the UK's arse from Germans, with the assistance of Kiwis and Canadians of course, we Australians now go through your customs as Aliens, while the Germans go through as your best mates.
I can assure you that various quite nice UK customs staff have had this issue pointed out to them by many Australians, including myself and all of the above.
A move is, therefore, unlikely until you blokes are in strife again.
Many thanks for all the kind suggestions, and lets continue to drive the last Brit car, and entertain each other in the process.
41deg C today. That is 100 and something in F.