Wikipedia claims that the character of Horace Jules in C. S. Lewis's That Hideous Strength - ostensibly the Director and boss of the N.I.C.E. organisation, in reality a figurehead manipulated by those truly in the know - was
in part a caricature of H. G. Wells
However, the reference for this claim is a link which supposedly gives a "very detailed analysis" but which leads me only to a login page.
What is the evidence for this claim? I'm interested to know if Lewis was really lampooning a fellow writer, and if so why. Does the character of Jules bear any resemblance to Wells or Lewis's idea of him?