Stuart Lancaster has warned his Six Nations title hopefuls that only victories over Wales and Italy will see them crowned champions.

Since losing to France on the opening weekend, the Red Rose have posted impressive wins over Scotland and Ireland to propel them back into contention.

Warren Gatland’s reigning champions Wales visit Twickenham on Sunday before England end a Six Nations that is likely to be decided by points difference against Italy in Rome on March 15.

“I agree that we need to close the deal and win the tournament. It was the objective at the outset to try to win the tournament,” Lancaster said.

“We didn’t quite achieve what we wanted to against France. That put us on the back foot.

“From that point on we’ve used Wales as motivation after they lost their first game against Ireland last year but went on to win the title.

“To win a championship you have got to win four straight from there. Three wins won’t do.

“If we can get the win on Sunday it is still within our capability.”

Manu Tuilagi and Marland Yarde have joined England’s extended training squad for the first time in this Six Nations following lengthy spells in the treatment room.

Centre Tuilagi made his comeback from a torn pectoral muscle for Leicester against Newcastle on Sunday while London Irish wing Yarde is two matches into his return from a hip problem.