Survey from U.S. bank Citi and pollsters YouGov showed on Friday that british households' expectations for inflation in the year ahead rose in August to their highest level since 2013, possibly reflecting the rising chance of a no-deal Brexit.

The public expects inflation over the next 12 months to rise to 3.2%, up from 2.9% in July.

"Such high levels have previously usually been associated with high energy prices," economists at Citi said in a research note.

"However, in the absence of those at the moment, the increase could be driven by rising chances of a rupture with the EU on Oct. 31, which could lead to higher consumer prices via tariffs, supply disruptions and weaker sterling."