In the alternate (1971) universe, JFK is now still alive and the newspaper headline in the bar says that he leads the League Of Nations - but just afterwards when Tom Bell walks in the street a big newspaper poster behind him says that JFK leads the UN (United Nations). In this universe the UN replaced the League Of Nations and JFK was assassinated of course - but like in this universe they would not be 2 different names for the same thing as even the initials are different.
Colin wakes up in bed to find his wife missing. He gets up and only has pyjama trousers on. He starts to put his dressing gown on. The scene moves to the drawing room and he comes into the room tying his dressing gown belt and is now seen to be wearing a pyjama jacket.
Tom Bell and Joan Collins get in a car parked by the Royal Albert Hall but the scene behind the car switches to an obviously a projected background as the recognisable Dorchester Hotel in Park Lane is clearly seen.