PASSENGERS will be plunged into danger on a “chaotic” Underground network unless plans for all-night running are suspended indefinitely, a Tube union said last night on the eve of planned strike action.

The London Underground will shut down from 6.30pm today until Friday morning as members of unions RMT, Aslef, TSSA and Unite walk out over changes to shift patterns.

London Mayor Boris Johnson hopes to launch the new “Night Tube” on the Piccadilly, Northern, Jubilee and Victoria lines on September 12.