Roman Schmidt explains "Milk from the west country was brought up to the Capital late evening and overnight.From Clapham Junction the tankers were taken to Vauxhall's Platform 1 on the north side of the running lines and from where milk was piped to the nearby United Dairies creamery and bottling plant.

Because Platform 1 could only be accessed from the Up Windsor line, after internal cleaning on the platform the empty tankers were tripped to Waterloo to access the Down local and back to Clapham Junction, where they were made ready for their weekday afternoon return to the west country"