A British national was on board a helicopter which crashed in Norway on Friday although their fate is unknown, a rescue team said.

Some 13 people were travelling on the helicopter which was on its way to shore from Statoil's Gullfaks B platform in the North Sea when it crashed, killing 11.

A Briton and an Italian were among those on board, although it is not known whether they are among the dead, a local broadcaster reported.

The other passengers are said to be Norwegian.