Oh wow, very short time until the 315s are all gone, best get a ride on one asap!
Not all gone for ages. End of 2019.
surely the 315s have to be gone well before the core opens? I thought it wouldn't take that long to replace them as there aren't that many required to run the service? 11 345s by September sounds like that's most of the off peak service?
Full length 345s can't run into Liverpool Street until after the tunnel section is in operation. (The 7 car 345s are longer than the 8 car 315s.) Peak hour services to Liverpool Street remain even after the full through service is running.
Once the initial trains from Shenfield are running through the tunnel space to allow platforms at Liverpool Street to be lengthened is created.
There are 22 x 8 car trains allocated to the existing service (44 units)
Don't forget 345s will be needed to start the Abbey Wood - Paddington service.