PPP Arbiter Chris Bolt has said he will publish draft findings next month into how much extra Metronet should have been paid to carry out its works due to changes in the scope of works.
Under Bolt's proposed timetable into the extraordinary review of Metronet's upgrade of Bakerloo, Central and Victoria Lines, draft directions on the change in costs and revenues that would have been incurred by an efficient and economic Tube contractor will be published on 12 November.
Metronet and London Underground (LUL) will be able to comment on Bolt's draft findings by December before final directions are published on 18 January.
Metronet went into administration in July after its request to the arbiter for a lump sum of more than £500M to keep the contract going was refused.
Instead Metronet was granted £121M which effectively sent it into administration. Meanwhile, Metronet's administrator Ernst & Young said that Rothschild's valuation of Metronet was now complete and bids for the company are expected soon.