Six Nations 2017: Scotland 'more than capable' of Twickenham win - Stuart Hogg

“Two wins is great so far but England pose toughest challenge,” says Barclay The Scrum

Scotland's last win at Twickenham came in the 1983 Five Nations, but they appear an improving team and England are yet to reach the level with which they consistently excelled previous year.

England coach Eddie Jones, in the course of a tetchy press conference on Thursday, tried to downplay Farrell's injury by saying he had run into his dog at the squad's training base in Bagshot, southwest of London.

"He could be in doubt", said Jones when asked about the 25-year-old Farrell's fitness.

He may be trailing England's Mike Brown in metres made (Brown has 266, while Hogg is on 207) but he has beaten more defenders and his breaks have resulted in more points being scored for Scotland.

After wins against Ireland and Wales, Scotland could take the Triple Crown as well as the Calcutta Cup.

The Red Rose camp left key tactical information on view at a training session on Tuesday - and it gifted the Auld Enemy crucial insight for the crunch Calcutta Cup clash.

Now they have their sights set on stopping England from equalling the All Blacks' world record of 18 successive victories on their home patch.

England's Grand Slam defence resumes against Scotland at Twickenham on Saturday.

Even so, it's still expected that Farrell will be passed fit for the game, where he will possibly join reinstated teammates Ben Young, Jonathan Joseph, and Jack Nowell.

"The kind of impact he's going to bring is huge for us, it'll lift the team". The last couple of weeks we have played exciting rugby.

"When we defend we know we will have to do so resiliently, and when we get our hands on the ball we have players who are very keen to express themselves".

Scotland make one change with back-row Hamish Watson replacing the injured John Hardie with South African-born Cornell du Preez on the bench for the first time.

Despite the winning run, England have not been at their best in the their three championship wins this year and have yet to lead any of the games at halftime.

But after naming his side he said: "We want to give our fans a really good performance".

England certainly look worth taking on after some less than convincing displays and best price 9/2 (Betfair) for a Scotland victory can't be sniffed at. "The crowd will get behind him and he's a great player to play alongside".