Peter Masson wrote:
TfL also hope to extend the Barking -
Gospel Oak service to Clapham Junction, taking over the WLL, and this
implies acquiring a fleet of diesel units (as well as alterations at Gospel
Oak), unless TfL can get someone to pay for wiring Barking to Gospel Oak.

Electrification of the GOBLIN route is envisaged as part of the opening
of the new Thames Gateway Container Port on the former Shell site in
Thurrock. The governmet approved the port last month. TfL will not
however get a totally free ride on this IIAIC

This could release two emu diagrams from the WLL. But the real need on
the
NLL is for longer trains, and this requires platform lengthening, notably at
Willesden Junction HL. Options in the procurement from Bombardier presumably
allow for the NLL units to be extended to 4 car.

Options in the press release speak of further trains and additional
coaches