At the airport, when Van Rooyen spots Jacqueline/Lady Fenton, there are airport paraphernalia and fire engines behind him - at a distance. An instant later the space is taken by an airport bus, very close at hand.
Morgan grills Van Rooyen in the flat in a bizarre and unprofessional manner that would be supremely unlikely even in the late-1950s Metropolitan Police: prolonged but ad hoc interview at the crime scene itself; displaying the body to the prime suspect; giving unnecessary pertinent information to the prime suspect.