The Fab Four: James McCartney joined by dad Paul and sisters Mary and Stella at his Camden gig

The four McCartneys came together last night for youngest son James' last UK tour date.

Sir Paul McCartney turned heads when he strolled into the low key Barfly pub in Camden, north London last night as a surprise to his youngest child.

The 69-year-old also brought along daughters photographer Mary, 42, and fashion designer Stella, 40, as a surprise.

Come together: Mary, James, Paul McCartney and Stella check out the youngest McCartney's solo gig

And James was obviously delighted by the visit with the 34-year-old dedicating his ballad Wings Of A Lightest Weight to his superstar father.

He told the crowd, 'This is about my dad. It's a beautiful song.'

It was the last gig in the singer's calender but the youngest McCartney is planning on releasing his first album, The Complete EP Collection.

Speaking about his music James said: 'There is only one thing to do with high expectations, and that is meet them.

Like father, like son: James McCartney gets a hug from his very proud dad after performing at a low key Camden pub

'When I grow up I want to be just like dad': Paul McCartney with son James in 1978

'I wanted to follow Available Light with something that showed a progression, that had an even deeper meaning, both spiritually and musically.'

The superstar support impressed the younger McCartney fans with one tweeting: 'Surreal. Been dancing side by side with Paul McCartney (and Mary and Stella) as he was taking videos with his phone of his son. Sweet!'

And the family support obviously made all the difference at the gig as James tweeted this morning: 'Great show last night in London...Barfly was rockin!'

Sir Paul wed American heiress Nancy Shevell in October and invited stars including fellow Beatle Ringo Starr, Rolling Stone Ronnie Wood and model Kate Moss to the reception.

Surprise! Sir Paul dropped into Barfly in Camden to see his youngest son's last UK gig