In message , Clive D. W. Feather
writes
If you're planning to detrain a southbound service at Finchley Central
and run it empty to Highgate depot, why not let it continue in service
to East Finchley and detrain it there? That way you won't hold up all
the following trains while the driver walks all the way down to the
back and then to the front again.

Or is there a logical explanation for this instruction?

Perhaps the train was withdrawn as defective?
--
Steve Fitzgerald has now left the building.
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