Built by Metro - Cammell, and almost identical to the GWR-owned type (these and the first batch of BR wagons were unfitted). They were used for tipping ballast from an adjacent line onto the trackbed, before laying the track. The opposite side of the wagon to the tipping direction was clipped to the rail, and the body moved sideways on rollers. The end chains attached to arms on the door opened it as the body tipped. Tipping too many wagons at once could tip the track as well!

LIVERY: 1st livery: up to about 1967 was black overall with yellow lettering. 2nd livery: 196783 was olive green body work & solebars with white lettering. 3rd livery: dark grey body & solebars with white lettering, and a 6" yellow stripe on the top edge of the sides. Generally running gear and buffer heads were black. Footstep & brakelever handle white. Buffer shanks (thinnest part) silver. Electrification warning flashes were fitted to wagons used 'under the wires', e.g. LMR & ER stock.