Manager Martin Johnson believes there is plenty to improve on after England opened their Six Nations campaign with a first win over Wales in Cardiff since 2003.
Wing Chris Ashton scored a try in either half of 27-16 victory. Man of the match Toby Flood added 13 points with the boot and replacement Jonny Wilkinson kicked a late penalty.
Wales launched a spirited fightback from 23-9 down as Morgan Stoddart crossed and James Hook kicked a penalty to narrow the deficit, but England held out for a deserved win.
England now have three home games in a row and have the chance to set up a Grand Slam clash with Ireland in Dublin on the final weekend of the championship.
But Johnson is not looking beyond next weekend's Twickenham assignment with Italy.
"I am really, really happy with the win as that's what we came here for," he said.
"We have not won away from home for a while in the Six Nations so it's good, but if we play badly next week against Italy what would that feel like?
"So we have to keep going and keep improving and the great thing is there is a lot we can improve on.
"Winning- that's the main thing. Some of the guys thought we won a little ugly today, and I'll go with that. We put away the chances we had, but, believe me, there will be a number of rollickings handed out come Monday morning."
"Traditionally we've not played too well against the blitz defences, however detail makes the difference sand we executed a lot better under pressure today, adding another layer of understanding in the ten days build up.
"The great thing is when you get the same guys back in camp as you had on the summer tour and in the autumn, you get that continuity and you can go from putting foundations in place to putting more detail on to your plans and ensuring we execute under pressure and there is plenty more to come.
"We left some chances out there but that composure is getting there game on game."
The build-up to the game had been dominated by the comments Wales coach Warren Gatland had made about England hooker Dylan Hartley, in which he criticised the Northampton man's temperament.
But Hartley was immaculate in the line-out and his usual physical self around the field, and Johnson praised the way his side had coped with the heated atmosphere.
"They did not rise to any bait in the last 10 days," said Johnson of his squad.
"They had a good excitement about coming here and they were relaxed, almost too relaxed for my liking which I found a bit worrying!"
Johnson also paid tribute to the performance of Flood, who kept his composure admirably amidst the Millennium Stadium maelstrom.
"Toby is a very smart guy," he said.
"He wants to get better and learn. He did a great job, a fantastic job overall and we have Jonny there as well. You can see them getting better week on week."
