Mouritz Botha and Matt Kvesic have been added to England's Six Nations training camp as injury cover.

The duo have been called up amid worries over the fitness of Tom Johnson and Calum Clark.

"I have been fortunate to have a run of games at Warriors, and now I am delighted to get the call from England," Kvesic told Worcester Warriors' official website.

"It would be fantastic to get the opportunity to feature in the Six Nations, but my priority now is meeting up with the team, keeping my head down and working hard to try and make that a reality."

Kvesic has never made a senior appearance for England, while Botha has won 10 caps.