Jason Roy and Alex Hales give England upper hand in Royal London Series

Hales (133no) and Roy (112no) each produced career-bests, with their maiden one-day international hundreds on home soil, as England trounced Sri Lanka with 15.5 overs to spare.

The hosts are therefore 1-0 up with three to play, and have already sealed the inaugural cross-format Super Series - Andrew Strauss' brainchild to ensure interest is sustained on bi-lateral tours.

Judging by the second successive full-house in this series, following the dramatic tie at Trent Bridge on Tuesday, that is not an especially pressing issue in any case.

As if to make sure, though, Hales and Roy provided a crowd-pleasing conclusion to a mismatch in which England did the most important work by restricting Sri Lanka to 254 for seven on a belter of a pitch.

Hales and Roy then took rich advantage, surging past England's highest opening stand of 200 and then also putting in the shade Strauss' own partnership of 250 for the second wicket alongside Jonathan Trott against Bangladesh at this same venue six years ago.

Eoin Morgan was a hugely appreciative spectator as England won by 10 wickets for the sixth time in their history, and prevailed - by any margin - for the first time in their last five ODIs.

"I think the chase was absolutely remarkable," he said.

"I've never experienced anything like that, where we were so in control without being reckless.

"I thought the two boys were outstanding, very imposing. They just played brilliant cricket, very entertaining."

England's openers hit 10 sixes and 17 fours between them.

Roy was modest in his self-assessment afterwards, but admitted he would be tuning into the highlights later - if only to check out his celebration, a roar with arms aloft, on reaching his second ODI hundred.

"A lot of hard work goes into batting, and a lot of emotions," he said.

"So once those runs came to me, it all came out.

"It will be interesting to see my celebration (on the TV highlights) - because I don't really know what happened.

"I'm just super-happy we got over the line in such an imposing way."

Morgan's opposite number Angelo Mathews must ponder how to re-energise his team after their hammering, in time for the next match on Sunday - when another home win would mean England can no longer lose the series.

He said: "We have to try to flush it out of the system and forget about this game as quickly as possible - because we've got only one day to come back and play pretty well."

  Jason Roy celebrates his century at Edgbaston
Jason Roy celebrates his century at Edgbaston