What counts as a "heatwave" in Britain

Guardian Unlimited | The Guardian | Britain set for 'blistering' weekend

From the above:

Weather forecasters today predicted that a mini-heatwave would hit the UK over the next few days, with temperatures in southern England set to reach the low 30s.

Temperatures across the UK will rise over the weekend, with England expected to get most of the dry, clear weather. They are predicted to reach 30C tomorrow and 32C on Sunday and Monday in southern England.

Cloudier conditions are expected from the Midlands to the north, but temperatures are still likely to reach 25C in Scotland by Monday.

Paul Knightley, a forecaster at the PA WeatherCentre, said temperatures would be "blistering over the next few days". "Everyone should remember to drink plenty of water, use suncream and don't sit in the sun too long," he said.

Pathetic! If I lived there, I would be praying for global warming.