England captain Martin Corry paid tribute to his forward pack as they outmuscled Australia at Twickenham.
The home side dominated up front as England powered to a 26-16 victory against the old enemy.
"That's just huge," said Corry. "We always get talked up for our pack but rarely have we delivered and exceeded expectations. Today they did.
"The important thing now is to back up our performance. We've got a massive game [against New Zealand] next week."
Number eight Corry added: "We had the pressure and the scores didn't come as quickly as we hoped but we knew that if we kept our composure, which we did, the scores would come in the end."
England coach Andy Robinson was also pleased with the performance of his pack, and singled out Corry and scrum-half Matt Dawson for the way they kept their heads when Australia hit back.
"To start with I thought we attacked their line-out and won three or four balls," said Robinson.
"Then the power of the scrum really came through and enabled the forwards to run with the ball as well.
"We've been in tight situations several times towards the end of recent games but we kept hold of the ball and didn't panic.
"That's where this team has grown, under the leadership of Martin Corry and Matt Dawson - they took real control of that game.
"It was a good try by Mark Cueto and I thought our defence was superb in the last 10 minutes.
"It was a huge challenge to play Australia and I thought they played pretty well at times."
Andrew Sheridan, the giant Sale prop who demolished the Australian front row, was also praised by Robinson.
"He had a top game," Robinson added. "He has been waiting for this occasion.
"It's an opportunity he has earned from his performances in the last six months and he really hit the ground running right from the start."
But Robinson sounded a note of warning as he looked ahead to the visit of the All Blacks, who are two wins into completing a home nations "grand slam".
"We've got to improve," said the former England flanker.
"We think know how we can do that for next week but all in all it's a very pleasing start."
Robinson also had a word for Australian prop Matt Dunning, who was stretchered off with his neck in a brace after a scrum collapsed.
"Safety is paramount in this game and if we do have to go to uncontested scrums that is right," he said.
"We all hope Matt is OK, our thoughts are with him.
"Yes, we want to get domination in the scrum and have a really powerful scrum but we don't want to see injuries that are career and life-threatening."
England wing Cueto sealed the game with a try in the left corner in the 75th minute after the home side had been hammering Australia's line for some time.
He said: "There's been a lot said about England and a lot of expectations and to get a win like we did is fantastic.
"It's going to be a hell of a challenge for us next week. We'll enjoy tonight and then get our heads down and prepare for next week."