Waterloo Station, London.
Railway workers lay preassembled units of track to minimise disruption for rail passengers.
L/S of men working on track, a train passes in background. M/S of men lowering track into position. L/S of section of track being lowered to ground. M/S of crowd of onlookers. M/S of man lowering crane. L/S of completed section being raised and being moved towards position. C/U of man giving clear signal. More shots of completed sections of track being lowered into position. C/U of man tightening bolts. Various shots of man hammering rivet home. General shot of men working on sections of track.