Finally the favourites settled an opened their account when Wilkinson pinned Samoa into their own 22 with a penalty and the lineout win was driven 15 yards with Back claiming the score.
Wilkinson drilled over the conversion from wide on the left and he added a penalty in the 28th minute to level the scores.
Va’a, though, was in terrific form with the boot as Samoa kept up the pressure with penalties in the 32nd and 34th minutes – while Wilkinson hit the post from point-blank range to show he is mortal after all.
England were still stuttering but their best period of pressure came shortly before the break with Wilkinson pulling his side back to 13-16 down with a second penalty from in front of the uprights.
And after the interval Samoa started to feel the squeeze and they were penned back for a five-minute spell as the big men battered away at their line. Samoa knocked on close to their line and collapsed the scrum that followed to give away a penalty try that Wilkinson converted.
The Islanders kept on playing, though, and their disjointed opponents lost a couple of lineouts and gave away a pair of penalties to Va’a in the 55th and 61st minutes. When England did get going, Ben Cohen and Balshaw surging down the right flank, all they came away with was a Wilkinson drop-goal for a meagre 23-22 lead 16 minutes from time.