I was there. I was 10 but remember it vividly.
The website I have posted seems to disagree quite strongly with the Wikipedia entry of the UK heatwave of 1976:
http://en.wikipedia.org/wiki/1976_United_Kingdom_heat_wave
Wikipedia says 90+ degrees was commonplace in Summer 76, the other site said it never happened all Summer.
Shrug.
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Yes, I was 10 too - suppose the user name gives a clue.
I wasn't actually monitoring the temps myself, so have only historical figures to go on. Just remember it being bloody hot for months, unable to sleep at nights, standpipes and our Daytona yellow Cortina covered in ladybirds.
Only ice cold cans of Cresta and regular strawberry Mivvis saved my life.
As well as 1995, seem to also remember some extremely uncomfortable temps in 2003 or thereabouts. Not for months, but possibly up to 100 degrees for a while.