England boss Eddie Jones insists his team weren't rewarded enough for their scrum dominance of Ireland at Twickenham.
The visitors produced a record 32-15 victory at the home of English rugby, but the Red Rose earned six scrum penalties - Ireland conceded 15 overall.
The collapse of the Irish scrum kept the hosts in the game despite being reduced to 14 men in the second minute.
"I’m a bit disappointed the referee didn’t allow us to scrum fully, that would be my only complaint - and we weren’t allowed to play advantage away from the scrum," said Jones.
"There was no sign of a yellow card. If World Rugby wants to have a scrum in the game they have got to allow strong scrums to allow themselves to dominate.
"We’re a bit disappointed we didn’t get a lot more out of that."
Jones insisted there was no blame put on lock Charlie Ewels for getting sent off in the opening exchanges after a high tackle on James Lowe.
"He's disappointed," said the Red Rose boss. "No-one apportions blame.
"It was a genuine attempt to make a good tackle.
"His head was just in the wrong spot and we’ve got no questions about the red card."
England skipper Courtney Laws commented: "I’m incredibly proud of the boys.
"To be honest we got very excited when the challenge was presented to us.
"That just shows you where we are as a group. I don’t think for a minute we ever gave up. We can take loads out of that game.
"Obviously there’s bits and bobs we can learn from but for the most part we did everything we said we wanted to do - and that was play for each other and give it everything we’ve got."
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