Earlier, official data showed Britain's budget deficit fell by much more than expected last month, helped by an unusually large credit from the European Union and the strongest value-added tax receipts on record.

Despite an uncertain outlook for self-assessment income tax receipts and local authority borrowing, the Office for Budget Responsibility struck an upbeat tone about the government's fiscal progress in the current 2017/18 financial year.

"It appears that the underlying improvement in borrowing so far this year is a little faster than would be consistent with our November forecast," the Office for Budget Responsibility said in its monthly response to the official data.

(Reporting by Andy Bruce; Editing by Robin Pomeroy)