The Queen and James Callaghan 31 Mar 1977
on Number 10
The Prime Minister's Office posted a photo:
The Queen talking with the Prime Minister, James Callaghan (right) at Heathrow Airport when he welcomed her and the Duke of Edinburgh home after their seven week Silver Jubilee tour of Australia, New Zealand Papua New Guinea and the Pacific. www.number10.gov.uk/queens-speech-2012