(16 Oct 2013, 4:55 pm)JakeSavage wrote I'd imagine light running through the tunnel won't be cheap on those short 9s.
It is possible to interwork short services with long services, it just requires timings to be altered slightly and drivers will be given less layover.
Of course, as ever, this is subject to change. I personally would have had the 9 go to Deptford fully, but this is a PVR increase of 7 to Deptford and a decrease of 4 to Percy Main...