BRUSSELS, Nov 30 (Reuters) - The European Union has agreed a financial settlement with Britain, a senior EU official told Reuters on Thursday, under which London has committed to paying a set share of EU budgets after Britain has left the bloc.

"The official offer has not been submitted, but unofficially it has been agreed to such an extent that if no one decides to stage a last minute complete turnaround everything will be OK," the official said.

Britain has committed to meeting an agreed share of the vast bulk of the future budget items which the EU asked for, the official said, adding: "It is a deal on what percentage share Britain will cover and on what items." (Reporting by Jan Strupczewski; Editing by Matthew Mpoke Bigg)