SIR – Ron Harding wades in (T&A April 30) on the big ‘global warming’, ‘climate change’– or whatever it’s called this week – discussion, suggesting that myself and colleagues always come to the conclusion that ‘experts’ are wrong.

This is, of course, not the case; while I disagree with most ‘official scientists’ who support the theory of man-made global warming, there are many thousands of independent scientists who are sceptical of this and who I more often than not tend to agree with, but as they do not fit in to the mainstream political climate agenda, you never seem to hear of them, at least not in the mainstream media.

People might remember environmental TV personality David Bellamy, who in 2004 famously suggested the theory of man-made global warming was “poppycock”, very soon after he mysteriously disappeared from our TV screens altogether. I wonder are the establishment afraid of a proper debate on this issue?

Jason Smith, Ukip Bradford chairman, Woodlands Avenue, Queensbury, Bradford