I'm surprised there has not been more mention on here or in the media of a similar heatwave in 1947 at this time of year (albeit it was a few days later in 1947).
Below i've copied data from a post by Bolty in May 2017:
29 May: 31.7C at Lincoln
30 May: 31.7C at Kensington Palace
31 May: 32.2C at Mildenhall and Camden Square (this is one of the only occasions where 90F has been recorded in May)
1 June: 31.7C at Mildenhall, Suffolk
2 June: 33.3C at Hunstanton, Norfolk
3 June: 34.4C at Kensington Palace and Waddington, Lincs
Considering it occurred 79 years ago and followed an exceptionally cold late winter, it could be regarded as an equally momentous event.
It was followed by an excellent summer.
Originally Posted by: Frank H