The sons of Beatles stars Paul McCartney, George Harrison and John Lennon are planning to team up to form a new supergroup.

McCartney's son James has revealed he has had conversations with Sean Lennon and Dhani Harrison and they appear to be "up for" picking up where their fathers left off.

But McCartney admits that Ringo Starr's drummer son Zak was less than keen: "I don't think it's something that Zak wants to do."