The U.K. and European Union are heading for a final battle over fishing rights as trade talks reach a climax, with officials cautiously predicting a deal within days.

The pound climbed against the dollar on Wednesday amid optimism that the focus on fish is a sign the two sides have largely settled their differences over the other major obstacle to an accord: the level competitive playing field for business.

And U.K. Prime Minister Boris Johnson’s office said that Parliament, which will go into recess Thursday, could be recalled as soon as next week to approve any deal that is reached. "Parliament has long shown it can move at pace and the country would expect nothing less,” his office said in a statement.