Created using ggplot in R and stitched together using image magick. Uses UK Met Office climate data.

Yes but the highest temperature was recorded at Heathrow runway, when a fighter jet was taking off.

When London got so warm we had to go to the tube to cool off in July…

Coningsby In Lincolnshire was the record spot, it does have an RAF base but it’s a bit rural.

https://www.theguardian.com/uk-news/2022/jul/19/uk-weather-record-hottest-day-ever-heatwave

That was published before the record temperature was recorded in Coningsby

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That's fantastic! Could you say which Met Office dataset you're using? There's so many of them

Really nice visualization! Excelent job!

Citation needed

One of the best visualisations I've seen in a long time.

https://www.metoffice.gov.uk/about-us/press-office/news/weather-and-climate/2022/record-high-temperatures-verified

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This is wrong in so many different ways it's almost funny.

This is a really super visualisation. Great work.

I have one quick question about the data, which was inspired by the little maps showing the regional differences. I hope you don't mind me asking because I can't find a clear answer by Googling it.

Are the national average figures weighted by population or by area?

I expect it's probably by area. Unfortunately, since England has about 80% of the UK's population in about 50% of the area, this can lead to situations where the national average picture (as in your line charts) is not consistent with what most people actually experience. The sunshine in July would seem to be an example of this, where the line chart suggests "about average" but the map shows that most people would have experienced "well above average".

Who cares about the visual, we are killing our planet and our grandchildren are going to slowly burn to death