The win surpassed England's 50-10 Six Nations victory over Wales at Twickenham in March 2002, with only their 62-5 success in a World Cup warm-up game in 2007 standing as a bigger triumph in the fixture's 144-year history.
Head coach Borthwick said: “I wanted the players to play big and fast, aggressive with the ball and that's exactly what they did.
“That's a sign this young team just embraces challenges and it is growing and developing fast.
“I think the team has been progressing for a period of time. You can see that growth.
“We were just falling short before of getting those actual wins but the team has stuck to the process.
“The next thing for these players is that hopefully a lot of them will get picked for the Lions.
“It was Kevin Sinfield (skills and kicking coach) who proposed that part of our role is to get as many of them on that plane as possible.
“Our job is to help them do that and hopefully there will be a lot of England players heading Down Under in a couple of months’ time on that Lions plane.”
Alex Mitchell insists England have set the standard for future performances after dismantling the Welsh.
“We had a great mixture of our attacking game and our kicking game. And then we wanted to move the ball. That's a good blueprint to push forward with,” said the Northampton s...