The pair live next door to each other in west London
Reissue to feature previously unreleased material
The guitarist played with Lewis at the 2008 Beijing Olympics
Robert Plant publicist refutes tabloid reports
Plant reportedly said there's 'no chance' of a reunion tour
Band's previous four albums all used Roman numeral system
The band reissue 1971's 'Led Zeppelin IV' this week
It features on the deluxe reissue of 'Led Zeppelin IV'
Court hears how late Spirit guitarist Randy California should be given a writing credit on the song
'Led Zeppelin IV' and 'Houses Of The Holy' will be reissued on October 27