I believe Bob Hope and Jane Russell would have done it better.
I was thinking more Jerry Lewis and Whoopi Goldberg.
Bob Hope may have been a better Wise-cracking comedian, but Kenneth More was a far better actor - and one far more adept at playing that type of Englishman (because he was) than Hope, even though Hope was English by birth.
More was fine as they were looking for an urbane Englishman. Its that man again!!
Who better to play the mild mannered English gent than Kenneth More.