I think that he also addressed a question I've been banging on about - the current timetable is based on simply moving the DfT Crossrail budget to HS2. This asks the question:
"How much HS2 can I build next year for £2bn?"
rather than
"Work out the most efficient way of building HS2, and tell me how much it will cost next year."
No one has suggested a major engineering reason that there couldn't be multiple bits of the build happening at once, though there is a legal/political one: the hybrid bill covers only phase 1, so the phase 2 plan / build will be later. But there's no reason why phase 2 shouldn't include the Scottish link, and be built as efficiently as possible.
Tobbes
"How much HS2 can I build next year for £2bn?"
rather than
"Work out the most efficient way of building HS2, and tell me how much it will cost next year."
No one has suggested a major engineering reason that there couldn't be multiple bits of the build happening at once, though there is a legal/political one: the hybrid bill covers only phase 1, so the phase 2 plan / build will be later. But there's no reason why phase 2 shouldn't include the Scottish link, and be built as efficiently as possible.
Tobbes