Paul Scott wrote:

I suspect the 'public' shortening of the routes north of the Thames can only
be a matter of time - you may recall how the Kings Lynn route suddenly
appeared in line for the IEP half sets a few months back, pointing to a
change of plans.

Ah yes - the ECML (Phase 2) option. If it is exercised then the IEP half
sets are currently expected to be delivered between March 2015 and
October 2015, so they could well be fully operational before Key Output 2.