Again with the speculation. :roll:
My earlier post linking to the TfL Board report was here and in two other prominent forums so I don't know where you got your info from. As for the "current hunger for cuts", we have a Spending Review due with the Autumn Statement on 25 November. The Treasury is focusing on revenue spending for the cuts you mention - capital spending, i.e. the type that will fund the Metropolitan line extension, is safe for now.
The final authorisation for the-then CRL was signed off by Partick McLoughlin in March, just prior to this year's General Election; if the project was going to be canned, that would have been the time to do it. What has happened since is that, following DfT instruction, HCC has ceded control to TfL and the latter organisation is securing all necessary internal approvals and authorisations before starting construction. TfL has agreed to underwrite any additional project spending above the P50 risk level - the £284.4m cited in my earlier post - and so will undertake a detailed cost review imminently to try and cut, if possible, the level of funding required to deliver the extension.
THC