Wales claim comfortable win against sloppy England in Rugby World Cup warm-up match
Second-half tries by Wales scrum-half Gareth Davies and centre George North proved the difference at the Principality Stadium.
England failed to cross the hosts' line and arguably more players harmed their World Cup chances than booked their place in a tournament squad due to be announced by coach Steve Borthwick on Monday.
"I was looking for a performance and that was a good start," Wales boss Warren Gatland told Amazon Prime.
"It was the performance (not the result) I was interested in and I thought we looked comfortable in the last 20 minutes."
"I thought (number eight) Aaron Wainwright was excellent, (captain) Jac Morgan was excellent, I thought our two second rows were outstanding.
"Scrums were a bit messy, we need a bit more clarification around that, and I thought young (flyhalf) Sam Costelow grew into the game and he'll learn from that experience.
"One of the things about test match rugby is you can't coach experience."
Arguably, more England players harmed their World Cup chances in a lacklustre display featuring 22 turnovers and numerous handling errors than booked their place in a tournament squad due to be announced by coach Steve Borthwick on Monday.
"In the first half we created lots of opportunities, we turned over too much ball in the opposition 22, we can't do that in Test rugby," said Borthwick.
"Immediately there are some areas for improvement, but the positives were how many entries we got into the opposition's scoring zone."
The former England captain added: "Credit to Wales in that 50-65 minute period, they were very, very good."
Full-back Leigh Halfpenny won his 100th Wales cap in a side led for the first time by 23-year-old Ospreys flanker Jac Morgan and featuring three new caps in props Corey Domachowski and Keiron Assiratti and centre Max Llewellyn.
England, 20-10 Six Nations winners at Cardiff in February, started with Marcus Smith at fly-half, rather than regular captain Owen Farrell, as Northampton flanker Tom Pearson won his first cap.
A host of new combinations contributed to an error-strewn start by both teams and Wales hooker Ryan Elias went off injured early on.
England led 9-6 at half-time, Smith kicking three penalties to Halfpenny's two after both teams had gone close to a try.
But it was Wales who broke the game open in the 47th minute.
Fly-half Sam Costelow's crossfield kick found Aaron Wainwright, with the No 8 passing to Morgan before the skipper beat two defenders and released Davies for a score Halfpenny converted.
Wales pulled further clear with another converted try approaching the hour mark.
Senior fly-half Dan Biggar, on as a replacement, produced a clever chip that bounced kindly for wing Louis Rees-Zammit
The ball was spread wide to the right and unmarked powerhouse midfielder North went in between the posts.
Rees-Zammit went close to a third try late on as he chased his own kick but was ruled to have knocked on.
The teams meet again for another warm-up match at Twickenham a week on Saturday.