On 3 Feb, 11:41, "Paul Scott" wrote:
You have to look at the plans for the whole area though. The re-design for
Kings Cross didn't need to allow for longer or more suburban platforms,
because the greater proportion will be diverted to Thameslink, and
lengthened to 12 car at that time.

Thameslink will only have room for 8 of them per hour. While that
should mean 12 car platform provision at KX is adequate in 2015, it
won't have room for any serious growth in IC or outer suburban
frequency.

(though granted, neither does Welwyn viaduct)

There is no case for spare long platforms in case of weekend engineering
works on Thameslink etc either...

If the majority of the Thameslink fleet is indivisible 12 car trains,
then yes there is.

U