Two yellow cards and 18 penalties cost them a chance of victory in Ireland last weekend, meaning England have had 10 players sin-binned in just four Tests.

Johnson called top referee Wayne Barnes into the camp last week and the starting XV from Croke Park - the 17 other members of the senior squad had been released for club duty - were put through collective training.

"We all know it had got to the point where we had to look at the problem slightly differently anyway," said forwards coach John Wells.

"There was a positive reinforcement. We related the conditioning work to the number of penalties we gave away in the last game.

"It meant everybody did the same. Everybody suffered at the weekend so everybody did the same thing in training. You can't just point individuals out because they have all contributed.

"It was just some running exercises which you could do any number of repetitions of and we just related it to the number of penalties we gave away in Dublin. It was a re-emphasis."