Given the revenues at stake and that Eng have a chance to prevent series loss, not to mention the high levels of entertainment from closely fought and top quality cricket, I doubt ECB would want to call off unless absolutely needed.
I think Eng will come really hard in this game, and wouldn't be surprised if the series ends in a draw. OT is an England fortress. Don't believe this Ind team is better than the Eng team, both are quite even IMO.
Indian camp reporting niggles to several batsmen and bowlers, so interesting to see what team they field tomorrow.