OSLO (Reuters) - Norway's central bank assumes that Britain will vote to remain in the European Union, but stands ready to handle any market turmoil resulting from the opposite outcome, Governor Oeystein Olsen said on Thursday.

"We have assumed Britain will remain (in the EU) and that things will calm down," Olsen told a news conference following a decision to keep Norwegian interest rates on hold.

(Reporting by Gwladys Fouche, writing by Terje Solsvik)