But Them Crooked Vultures look to have put paid to them nasty rumours, because Led Zep bassist John Paul Jones says he's "really happy" with his new supergroup, also starring Dave Grohl (Foo Fighters) and Josh Homme (Queens of the Stone Age).
Jones reveals there were indeed plans to hit the road after he, Plant and guitarist Jimmy Page reunited in December 2007, with dead drummer John Bonham replaced by son Jason. Jones tells the BBC: "Jimmy and I rehearsed a bit with Jason Bonham and we couldn't really agree on singers and that fell by the wayside. Then this [Them Crooked Vultures] came along and to be honest, I'm really happy." - more on this story