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The F Class were intended to work freight trains over the Metropolitan Railway mainline.
Withdrawal
All remained with London Transport until they were withdrawn and scrapped between 1957 and 1962. L52 was planned to be preserved by the Met Tank Appeal Fund but when it was found that the engine had a cracked mainframe, Metropolitan Railway E Class No.1 Was Chosen instead for preservation. Which lead to L52 being scrapped and No members of the F class being around today.