The permitted NWLR route passed Edgware Road station and the companies sought permission in November 1908 for a section of tunnel 757 metres (2,484 ft) long linking the BS&WR and the NWLR tunnels.
Den tilladte NWLR-rute passerede Edgware Road Station og selskaberne søgte om tilladelse i november 1908 for en 757 m lang tunnelsektion, der skulle forbinde BS&WR- og NWLR-tunnelerne.