The McCartneys announced earlier this week they are expecting a baby

Sir Paul was in his home town on the eve of the final date of his Back In The World tour.

He played three songs, including Let It Be and We Are Family, at the crew's end-of-tour party.

His pregnant wife Heather attended the party, along with around 150 crew members and a few of McCartney's close friends and family.

The Cavern was the notoriously crowded and smoky basement club where the Beatles played at the start of their rise to fame.

Paul was really dancing the night away Bill Heckle Club owner

The original Cavern was bulldozed in the 1980s but a replica was created just a few feet along on Mathew Street.

Cavern owner Bill Heckle said: "Paul was really dancing the night away, enjoying every minute of the evening.

"He was incessantly on the dance floor with Heather."

The club was given a Moroccan makeover for the party and decorated with plants and beanbags.

McCartney will have played to two million fans on this tour by the end of his concert on Sunday at a specially built outdoor arena at Kings Dock, Liverpool.

He plans to mark the occasion by giving a �17,000 Volkswagen Beetle to one audience member.