What I think will never be of any account. However, here is my pennyworth anyway. It seems that GB was pretty useless at the Olympics until these millions were poured into sports coaching, venues and equipment. The investment has paid off in a host of medals and GB powering up the Olympic medal rankings to (currently) second place. Therefore, direct investment pays off in stellar results.
If that same money had been put into direct education for an intellectual elite (as the sports money has benefited a selected physical elite) then GB would have been looking at Nobel prizes, world class inventions, artistic creativity, Oscars, economic regeneration, musical achievement in both the popular and classical spheres, cures for yet incurable diseases and many other top class achievments which would have benefited the country and, indeed, the world.