Has this ever been considered? Trains could run from
Barking/Whitechapel to Edgware Road and then on to either Hammersmith
or Wimbledon. Abolish the Circle Line to get the extra C stock
necessary, and use the spare D stock trains for Kensington
Olympia-Tower Hill-Barking District Line services.
Would there be enough C stock trains to do this? Probably have to
terminate some at Edgware Road.

--
Paul