The southern site, adjacent to the pre-existing First Capital Connect (FCC) EMU depot, would include CET facilities, another  train-washing building, a  underfloor cleaning building, and shunter's cabins. Wheel-lathe facilities were to be shared with a pre-existing installation at the FCC depot.
The southern site, located near the existing First Capital Connect (FCC) EMU depot, would house CET facilities, another train-washing building, a underfloor cleaning building, and shunter's cabins. Wheel-lathe facilities would be shared with an existing facility at the FCC depot.