Just a thought - and folks more knowledgeable than I will be able to explain why this is an unworkable option - but why not terminate some / most / all* 'fast line' scheduled services at Ealing Broadway (
EAL▸ )? The fast line platforms are available for use so passengers would be able to transfer to Elizabeth, District & Central line
TfL» services with comparative ease. East of EAL there are crossovers which would allow bimode
IET▸ 's access to (temporary?) fuelling / stabling facilities in Acton Yard should this be required. Fully electric trains could be stabled on the presumably
OOU▸ fast lines between EAL & AML with perhaps (a) new temporary crossover(s) to permit the departure order of
RDG‡-bound
ECS▸ trains to be changed.
If required additional stabling capacity could be made available at Southall and near West Ealing.
There would be little conflict with relief line services and this would surely be easier than trying to 'shoehorn'
GWML▸ trains into either WAT or EUS train plans.
*I believe fast line services from/to
PAD» run at roughly 3 minute intervals, how about 50% to EAL and 50% terminating at/starting from RDG?
Of course an additional option would be to run all
EXD» <>WAT services as 9-coach trains, and temporarily reinstate as many
BRI» <>WAT trains as possible, and encourage passengers via publicity campaigns to use these thereby reducing pressure on the route east of RDG.