Following an abysmal first-half showing, Wales produced a stunning second-half fightback against Scotland but were ultimately beaten 27-26 by Gregor Townsend’s troops in Cardiff.
Wales have not beaten England at Twickenham since a memorable 28-25 triumph over Stuart Lancaster’s side at the 2015 World Cup.
But former England international King – now attack coach under Warren Gatland with Wales – believes Steve Borthwick’s men are beatable.
“They’ve (England) certainly had a shift in mindset in their defence. They bring a huge amount of line speed, we saw that against Italy,” said King.
“They’re always going to have a good forward pack, it’s in their DNA, with George Ford controlling things at 10. They’ve got a decent team, finishing third in the World Cup is testament to that.
“But we need to show a no fear policy going there and try to establish our game early on and put the pressure back on them.”
Brighton-born King won five caps for England and is clearly only too aware of the talents in Borthwick’s squad.
But the 49-year-old stressed he will be bleeding the red of Wales upon his return to Twickenham against an England side that survived a real scare in their tournament opener against Italy last time out.
“I feel myself as an honorary Welshman now. I’ve been here in the job over a year,” he added. “The World Cup was an incredible experience and I’ve started to learn a few of the Welsh songs as well.
“It’s important to show the lads that England are a good team, but that they’re not unbeatable. That’s the reality.
“But we’re honest, we can’t have another half like that first-half against Scotland at Twickenham.”
Wales will be without flanker James Botham at Twickenham due to a knee injury sustained last weekend. Harlequins prop Dillon Lewis and lock Seb Davies have been added to Gatland’s squad ahead of the trip up the M4.
And the visitors expect to be boosted by the return of Ospreys centre George North who missed the defeat to Scotland with a shoulder injury, although there is still a doubt over outside half Sam Costelow after he had to be replaced with a neck injury at the weekend.
When asked about the availability of North, King responded: “Fingers crossed. He’s training well.
“It’s good to have him back. He had a great World Cup. His relationship with Nick (Tompkins) in that midfield was one of the highlights of the campaign.
“It’s frustrating he wasn’t around last week. It’s good we’ve got some competition for those places.”