It was a Friday afternoon in February, 1972, and Robert Conway was sat in his office at Salford University.
A man knocked on the door and asked if Robert, the university's entertainments officer, could put on a gig that night, adding almost as an after-thought, that the act was Paul McCartney's new band Wings. In fact, the man said, the former Beatle was sat outside in a van right now, if you'd like to meet him.
"I went out and there was a white van and there was Paul, Linda McCartney, a few kids and their dogs," said Robert.