It isn't compared to the general population as a whole.This is an outdated view as the Tory party has been courting the Asian community for years (the self made angle) so look at the party new blood including rishi and javid you’ll see that the male pale stale tag is changing.
83% of the general population is 'White British'. Tory members - 95%
Median age of pop is 40, Tory members 57
53% of pop is ABC1, Tory members 80%
They've identified that not just some white people are wealthey, greedy and self interested; would be crazy if they hadn't.