England's Cumbrian forwards coach Steve Borthwick has revealed replacement scrum-half Dan Robson is undergoing medical checks after being ruled out of their Six Nations finale against Scotland.

Robson was poised to win his third cap as Ben Youngs’ understudy for the climax to the tournament at Twickenham on Saturday but will now be replaced on the bench by Saracens’ Ben Spencer.

“Dan is not available and has left camp,” said Carlisle-born Borthwick.

“He’s got some investigations and consultations going on. We’re trying to investigate exactly what’s wrong.”

Spencer won both of his caps as a replacement on last year’s tour to South Africa and Borthwick views his former Saracens team-mate as a ready-made replacement for Robson.

The 39-year-old said: “I was fortunate enough to play with Ben. He’s a good player. 

“He’s fast, fit and has real good fundamentals of the game. He can pass well and kicks well.

“He’s had time with us last year and knows our principles of play. He’s played with and against a lot of the players here, so knows them well.”

Yesterday, Mark Wilson, who began his career in Penrith, was named in England’s 26-man squad.

Heading into the final weekend, Wales lead the championship, sitting a point ahead of Eddie Jones’ team.