When the first section of the Jubilee line was planned in the 1970s, the second phase of the project was intended to continue the line eastwards from the terminus at Charing Cross to the City of London, Woolwich and Thamesmead.
Da den første del af Jubilee line blev planlagt i 1970'erne, var anden etape påtænkt at fortsætte banen mod øst fra endestationen på Charing Cross til City of London, Woolwich og Thamesmead.