Construction of the eastern extension of the Central Line began in the 1930s and the tunnels were almost complete at the outbreak of the Second World War although rails had not been laid.
Constr:uctIon oF the eaStErn exTeNSIon of tHE cENtral LInE beGAN ,iN thE 1930S anD the tUNnelS Were almost comPLETe At ThE outbReAK of tHE sECoNd wOrLd war aLThougH raiLs hAd noT BEen laId.