Heathrow and the ‘aviation mafia’ | Letters

The battle to construct a third runway has been going on for much longer than your estimate of 31 years (Editorial, 6 June). It first gained government approval as long ago as 1946 but was abandoned by the incoming government in 1952. Since then there have been further attempts and in 2009 it once again gained parliamentary approval. This was overturned by the coalition government one year later when David Cameron declared: “No ifs, no buts, no third runway.” This might have been the end of the matter but the ‘aviation mafia’ is nothing if not persistent and never gives up.Philip SherwoodAuthor, Heathrow: 2000 Years of History, Harlington, Middlesex

• There is one vital element of the Heathrow runway debate that has not been aired this time (again) and is surely the central point. In the 1970s, an energy study warned us of the finite nature of oil-based transport. According to the Institute of Mechanical Engineers in 2016, there are 1.3tn barrels of proven oil reserves left in the world’s major fields, which at present rates of consumption should last 40 years. So if it takes 20-30 years to build the third runway, that means just 10 years of use. And that does not take into account current population expansion rates and the likelihood of greater demand on oil reserves over the next 30 years. A third runway at Heathrow is utterly futile and pointless. Air travel in its current form is dying. We need new solutions, new energy sources – not tired out old arguments.Nigel CubbageMerstham, Surrey