England bowler Stuart Broad insists the team now have a ruthless quality which makes them daunting for their opponents.
With England entering the final Test of the Ashes series at the Oval with an unassailable 3-0 lead, the team are hoping to inflict another psychological blow on Australia with their winter tour Down Under looming.
And Broad, the hero of the thrilling 74-run victory at Chester-le-Street with match-winning figures of 6-50 on the fourth day, is relishing the prospect of England building on their new reputation.
"There's one thing for sure about this England team and that's we're tough," Broad said.
"We've come through tricky times and stand up when we need to be counted, which is quite an un-English thing. We want that to continue.
"There's no doubt the country is proud of this team and what we've achieved because fans like winning teams. We want to win and make them happy.
"We do have a win at all costs mentality. I think we're quite an unpleasant team to play against at the moment.
"Teams won't play against us and enjoy the experience. That's what we want.
"You always have a responsibility to the fans and youngsters because you're role models. You have to play hard but fair, that's how the spirit of the game is defined.
"We've been accused of all sorts, but those things aren't remembered, it's winning the series that will be remembered."