Bank of England Governor Mark Carney spoke at a press conference following the U.K. central bank's latest monetary policy decision.
The BOE kept interest rates unchanged Thursday, in line with analyst expectations.
Investors listened into Carney's speech for any comments around Brexit and the economic uncertainty surrounding it.
"The fog of Brexit is creating tension in financial markets," Carney said during the press conference.
"Now, how these tensions are reconciled once the fog lifts will have consequences for the path of monetary policy in ways that cannot be predicted in advance," he added.