He actually breaks down the maxima by degree:
An annual maximum of less than 90F has happened just under 50% of the time since 1900 (90F is 32.2C). Since 1900,
34C or more seen 25 years, in (10 times 34-35: 1921, 1930, 1933, 1941, 1947, 1959, 1975, 1989, 2013, 2017, plus the 15 years below.
35C or more has been seen in 15 years from 1900 on (1906, 1911, 1923, 1932, 1948, 1957, 1976, 1990, 1995, 2003, 2006, 2015, 2018, 2019, 2020),
36C or more has been seen in 7 years (1911, 1932, 1990, 2003, 2006, 2015, 2019) [actually 8 years, inc 2020]
37C or more three times (1990, 2003, and 2020), [actually four times, inc 2019]
38C or more twice (2003 and 2019).
https://www.trevorharley.com/hottest-day-of-each-year-from-1875.html
Yateley, NE Hampshire, 73m asl
"But who wants to be foretold the weather? It is bad enough when it comes, without our having the misery of knowing about it beforehand." — Jerome K. Jerome