Wales warn England over illegal scrummaging ahead of showdown

Wales plan to be "pointing a finger" at England loosehead prop Joe Marler should he scrummage illegally during Saturday's Six Nations showdown at Twickenham.

Warren Gatland's men felt they were harshly penalised at times during the teams' last encounter at the World Cup in September, when England forward Marler's angle of scrummaging was the subject of much debate.

Wales assistant coach Robin McBryde believes Marler subsequently got "found out" when England subsquently took on Australia and were dumped out of the tournament.

"He needs to scrummage legally, otherwise we will be pointing a finger," said McBryde.

"You have to measure each scrum on its own merits with regards to who gets the upper hand. It was very disappointing, especially against England, when we fell on the wrong sides of decisions and we felt the problem lay elsewhere."

South African referee Craig Joubert will be in charge on Saturday - making his first Test appearance since the controversial World Cup quarter-final between Scotland and Australia - but McBryde expects the official to deal with the scrummaging issue accordingly.

"We have a very experienced referee in Craig Joubert. He's an extremely good communicator with the players, and [Wales captain] Sam Warburton enjoys working with him.

"I can't see it being a problem on the day, because both teams have a positive attitude to scrummaging. That is what we will be focusing on.

"All we can hope to do is build a relationship with Craig Joubert so we have a better understanding of where he is coming from and what he is looking at."

McBryde also revealed that he felt Marler's technique was a significant problem for Wales against England at the World Cup.

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"That was the feedback we had after the World Cup, in particular, and he got found out against Australia," he added.

"We've come on a long way since then, not just the players, but me as a coach. It's one thing trying to appease the officials, but we have to be careful we don't leave ourselves exposed as well in that area."