Roberts frustrated by defeat
Jamie Roberts underlined Wales' sense of frustration after conceding "two soft tries" that meant they began their World Cup warm-up campaign on a losing note.
Wales almost wiped out a 13-point deficit at Twickenham, dominating the final quarter against an England side that required Jonny Wilkinson's trademark drop-goal accuracy to claim a 23-19 success.
"We were certainly the fitter team come the end of the match," said Cardiff Blues centre Roberts. "To come back from where we did and almost clinch it showed we are a strong side."
He added: "But we are disappointed to have conceded two soft tries. (James) Haskell's try off the back of a scrum, maybe we got our defensive set-up wrong there.
"And it was a good line from Manu (Tuilagi) for his try, but our defence was quite weak under our posts, so two soft tries were conceded, really."
Overall, it proved an encouraging afternoon for Wales coach Warren Gatland, whose players showed the benefits of two punishing summer training camps in Poland by finishing strongly.
Roberts' midfield partner Jonathan Davies added: "If we had been playing for another five minutes then we felt we would have won that match.
"We finished the game strongly, but it was frustrating we conceded all the unforced errors and the soft tries we gave away.
"We were disappointed by that, but this was our first game of the season and we can be reasonably pleased with the way we played. We just need to cut out the little mistakes, but we are going in the right direction."
Wales face England again next Saturday, this time in Cardiff, then host Argentina before Gatland unveils his World Cup squad.