England coach Stuart Lancaster admitted his side "didn't turn up" as they surrendered the Six Nations title and their unbeaten record to Wales.
England trailed 9-3 at half-time before capitulating to a record 30-3 defeat at the Millennium Stadium.
But Lancaster insisted: "I don't think it was a psychological thing, Wales played well, we didn't turn up and didn't match their physicality. It was better than ours.
"Going into half-time, we realised we hadn't got all the execution right - and set-pieces were a problem.
"We still felt we were going OK, but the first quarter of the second half wasn't good enough and Wales thoroughly deserved the win, no complaints."
Assistant coach Andy Farrell admitted the defeat was a bitter pill to swallow, but claimed some good may come out of it.
"It is hard to take," he said. "But after 65 minutes the game was over. It is perhaps a good experience for our guys to stand there and see what it is like to (see a team) lift the Six Nations trophy.
"Momentum is a great thing and we couldn't get any at all, especially in the first half.
"All credit to Wales. I thought they were strong in every single department. We can only learn from that."