Apparently due in part to collapse of Sterling which meant that the cost of raw materials went up. That of course could reverse. However I think since the cost overshoot was announced, Sterling has fallen much further so the overshoot could be much worse than has been disclosed.
remember Wembley. Millenium Dome. major projects like these are renowned for budget overshoots.
You would have thought that if a builder is contracted to build the stadium, they carry the cost. That's what I would do to mitigate risk. Tbh I don't really know what I am talking about here so I will stop here, but just shows that Spurs are under financial pressure. They'll claim they have the financial resources in place to deal with that, and it doesn't impact on their transfer activity, but it is very noticeable just how quiet Spurs have been in the transfer mkt
How is the builder going to take a £400m extra expenditure? If it were due to delays brought on by the builders themselves fucking up, maybe, but raw materials costs?