Rhona Martin's team need to win both remaining matches

The defending champions, who earlier beat Italy 9-5, were two points down going into the ninth end.

Skip Rhona Martin missed a pressure shot to get back on terms, and the Norwegians picked up two to hand Britain their third loss in Turin.

They must win both their remaining matches against Japan and the US to guarantee a chance of qualifying.

The all-Scotland team share fourth place in the standings with Canada, who suffered a surprise 5-2 defeat to Japan in the morning, as they look to make it to Tuesday's tie-breaker for a semi-final place.

There are two tough games ahead of us and we are going to have to perform well to win GB skip Rhona Martin

Martin admitted inconsistent shots were the reason for Great Britain's below par performance against Norway.

"You play one good one and one bad one," said Martin. "You can't do that at this stage of competition.

"There are two tough games ahead of us and we are going to have to perform well to win."

Things had looked much brighter earlier in the day, when after a slow start, the team moved up a gear to beat Italy.

Martin shot a perfect double takeout in the ninth end to take the score to 8-5 and effectively seal the match.