Welch was looking for songs to revitalise Cliff Richard’s flagging career. Back home he flicked over one of the cassette tapes and played a song he hadn’t heard in the Island office.

Cliff Richard can make that claim, because members of The Fab Four have admitted it in interviews. Such was the impact of The Shadows, for whom Richard was the lead singer. Over and over again ...

“Well, you know if someone asked me if I could advise that young Cliff Richard about anything… I would actually say to him, ‘Do whatever you're going to do, because apparently it worked!’ ...