On Sunday, July 14, 2013 9:56:56 AM UTC+1, Jared Nigel Fruyton wrote:
Recalling record-breaking 10 Aug 2003,I was at my mother's home watering

her outside plants very early on and feeling the burning heat of the sun on

the neck area by 8.00 BST.

In those days BBC teletext provided hourly updates of Cities and large towns

across the UK and for London the 9.00 BST temp was shown as 26C,by the time

I was home the equivalent temp at 10.00 BST

was 31C so we have a long way to go before matching those high temps so

early in the day.A rise of 5C(9F) in one hour was truly remarkable.

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Teignmouth (Ant Veal's site - which I use as a proxy and is a fair measure of max temps) was recording 25.6C at 0821.

http://www.teignmouthweather.co.uk/current.html