Mr Smith, chief executive of trading house Tullett Predom, says the statue would be a more fitting use of the plinth than its current role as a showcase for contemporary art. He said: "It is unbelievable that there is no recognition of a man who made such a massive contribution to Britain's defence. The Germans called him the defender of London. If you look around the square, there are admirals and generals but no statues of anyone in the RAF."