Later in Cambridge, she walked into a student demonstration by about 400 people.
Six eggs were thrown, but none hit her. Most smacked on the pavement, one hit her car and another was caught smartly by Police Supt John Christopher, formerly a keen cricketer.
The demonstrators carried banners supporting the CND and opposing government cuts, but the Prime Minister looked unflustered as she entered the university's Robinson College for a private lunch.
Before she left the college, attracting the attentions of a smaller demonstration, Mrs Thatcher was asked what she thought of the protesters. “Not much” , she replied.