I pity the fool who lives in a bona fide hot country. It was 'hot' here a few weeks ago - we're talking as 'warm' as 30 degrees celcius - and people were running around screaming "I'm melting, MELTING!".
Virtually.
Still, at least we have one mitigating factor working in our favour: the weather is so bloody rubbish 99.9% of the time here that no bugger has air conditioning, so when temperatures do creep above our comfort zone, there's not a lot we can do about it. The London Underground has huge notices at the entrances during the summer, along the lines of "It's super hot in here. Don't come through if you're pregnant. Or old. Or don't want to stand with your face embedded in someone's sweaty armpit for half an hour at a time."
My conclusion is, don't go to London. And stay indoors with plenty of fans.
Fortunately it's gone back to being pleasantly warm here, rather than uncomfortably, keep-your-window-open-all-night, might-wake-up-with-a-crazed-druggo-standing-over-you but-that's-better-than-trying-to-sleep-like-this kind of hot.