Court of Justice of the European Union

"If we held the vote tomorrow, the deal would be rejected by a significant margin," the U.K. prime minister admitted, hours after a European Union court ruled the U.K. can still back out of Brexit.

Since going into effect in July, nearly a third of Poland's judges have been ousted. Friday's ruling orders officials to reinstate justices and raise the mandatory retirement age from 65 back to 70.

The decision is a setback for the ride-hailing company which has been in a battle internationally with taxi companies. Regular cab firms say Uber gets a regulatory free ride that they don't enjoy.