SIR – I’ve just come across a cutting from the T&A dated August 19, 1975 – 35 years ago. It says that on Bradford holiday weeks, the temperature never failed to reach 75 degrees Fahrenheit (24C) every day, giving an average August temperature of 67.8F (20C).

It reports that until then, the record year of the century had been 1947, when the average August temperature was 62.6F.

Further proof, I suggest, that the much-quoted ‘global warming’ has nothing to do with humans. We are insignificant compared with the elements which control climate.

I wonder where Al Gore and Keith Thomson were in August, 1975?

Peter A Rushforth, Sutton Drive, Cullingworth