It would take nearly 7 years at £10000 per day to burn through £25m.
Presumably the quoted £10k per day is the current levels, and represents the worst position so far. One would assume that the other shareholders (the councils) would have access to more detailed information as to where exactly £25m has been spent (I glanced quickly at the last 5 years accounts, but can't see any evidence of that level of investment in any form (whether as capital or loss-support)).