Even the jubilee lines trains are restricted to 70% and that's the newest line
They're pretty quick on 70% power. Were they always restricted or was it a recent thing?
Also, aren't Swiss Cottage and St Johns Wood old a lot older than the other 'underground' stations on the Jubilee Line? They look as old as Colliers Wood and Tooting Broadway Stations on the Northern Line.
I used to think it was a completely new line but later learnt that Baker Street to Stanmore was once a Bakerloo Line branch until sometime in the 70s.
Someone did tell me that they were restricted from new but not to sure about it
My underground train runs from Mile End to Ealing, From Brixton to Bounds Green