Updated

Britain's Foreign Office says U.K. veterans who served on hazardous Arctic convoy duty during World War II may not accept bravery medals offered by Russia.

The convoys that sailed from Britain to northern ports in what was then the Soviet Union provided vital support to Soviet troops fighting Hitler's forces on the eastern front.

Officials said Friday it would violate British rules to accept the Ushakov Medal because the veterans are in line to receive a British medal for their service and because the service took place more than five years ago.

Prime Minister David Cameron said last year that the Arctic Convoy veterans would be honored with a medal, but officials say details are still being worked out.