It actually stated that problems were found with every weather station reporting temperatures in excess of 40°C and most certainly did not agree with your premise.
"The hottest temperature on record" only works if you accept the massive hike from the heat island effect and then only if you ignore at least the first half of the twentieth century. If you look at the Met Office (even Wikipedia) every "record temperature" since 1976 has been recorded at an airport or in an urban heat island. In contrast, the highest 'open country' record was in 1911 in Northamptonshire (36.7°C). The weather stations now reporting 'record temperatures' would probably be classified CRN4 or worse (i.e. recording at least 2°C and some over 5°C too hot) -- but since you continue to argue from assertion and refuse to identify your weather stations, we can never know.
Returning to the actual topic -- Air Quality England reports yet another day where pollution is consistently low across the entire country (and hence there is no justification for further restrictions).