Well , I suspect there'll be a fair amount of renewing. IMO
tho extending the ELL south is a bad idea anyway. It should
have been kept as a self contained LUL line with a northern
extension, making it run on the crowded south london network
rail tracks is only going to make a timetable disaster whatever
they brag about 10 trains an hour (or whatever it is this week).
Would have been far easier (and cheaper , they could have
kept the same trains, saved on 3rd rail conversion etc etc) to
just make better interconnecting services at New Cross and
New Cross Gate. Next they'll be having C2C takiing over
the District line to Upminster.

B2003