Upvote:6
In the case of Rehder v Air Baltic, heard by the European Court of Justice, 9th July 2009 (Case C-204/08), the ECJ ruled that the jurisdiction in these cases is:
in respect of a contract for air transport services from one member state to another member state which is made with one sole airline as the operating carrier, the court having jurisdiction to deal with a claim for compensation founded on that air transport contract and on the Passenger Rights Regulation is the court having jurisdiction over the place of departure, or over the place of arrival of the aircraft.
So no, you cannot claim in the UK for something that happened in either Poland or Germany.