Sonja McLaughlan
Rugby union reporter on BBC One

As both sets of players left the field after warming up they came off the pitch together and there was a scuffle at the mouth of the tunnel.

Owen Farrell was involved, Scotland captain John Barclay had to pull away a number of his players and Farrell was pulled away by some of his teammates. A real edge and you wonder if some of that might now spill over into this game.

Hang on a second...

Big news from down on the touchline coming your way.

The teams are out a little early to be presented to the Princess Royal, the patron of the Scottish Rugby Union.

She starts the flesh-press with England to a backdrop of whining pipes.

Nathan Hughes drops to one knee as the royal hand is extended.

Not seen that before. It almost looked like a proposal of marriage.

Image source, Getty Images

Martin Johnson
Former Lions and England captain on BBC One

The captain is still very important in modern rugby, and Dylan Hartley sets the example. So, even though he plays 50-60 minutes per game, he's still out there long enough to make a big impact. For him to play that long - is a hell of an achievement.

Hartley becomes England's second-most capped player today.

Joe Launchbury - England's second row - get the dubious pleasure of a solo sprint onto the Murrayfield pitch as the organisers recognise his 50th cap for the visitors.

The reaction from the home fans seems to be pure ambivalence. At best.

Launchbury looks a little sheepish.

The two teams soon put him out of his misery, trotting out side by side.

Jeremy Guscott
Former Lions and England centre on BBC One

In a game of international rugby these days, there's so much kicking, so you need a guy you can be confident in at full-back, and Mike Brown is one of the very best under the high ball.

Image source, Reuters

Martin Johnson
Former England captain on BBC One

Speed is a gift, but you have to be able to play rugby as well. If you give Jonny May an inch of space he can destroy you - you know if you're facing a guy like May in space you haven't got a chance.

Image source, Getty Images

England make only one change from the team that beat Wales last time out, and it is an enforced one with Nathan Hughes replacing Sam Simmonds at number eight.

The Wasps back row has recovered ahead of schedule from a knee injury to take his place in the starting XV.

Elsewhere prop Joe Marler is among the replacements after serving a suspension, but Sam Underhill is preferred to James Haskell as back row cover on the bench.

England: Brown; Watson, Joseph, Farrell, May; Ford, Care; Vunipola, Hartley, Cole, Launchbury, Itoje, Lawes, Robshaw, Hughes.

Replacements:George, Marler, Williams, Kruis, Underhill, Wigglesworth, Te'o, Nowell

Chris Paterson
Former Scotland international on BBC One

Peter Horne brings a lot of balance to the Scottish attack, so if Scotland want to hurt England, he'll be key, because he brings that second direction of attack.

There are a lot of similarities between him and Owen Farrell, they can both kick, they can both tackle and they're both very, very aggressive.

Ugo Monye
Former Lions and England winger speaking on Rugby Union Weekly

"Finn Russell is going to be under incredible heat from the England back row and the backs.

"They're going to get stuck into him, because they know he can be a flaky player at times.

"If he wants to come and chuck the ball around and play, and chip and chase and all the rest of it, I just think England will swallow it up and I think they'll force him off the pitch."

Image source, Getty Images

Gregor Townsend resists the temptation to throw prop WP Nel straight back into the starting line-up and instead keeps faith with the starting XV who accounted for France last weekend.

Nel, 31, has not played since breaking his arm against Samoa in November, but is included on the bench alongside lock Tim Swinson and centre Nick Grigg.

Prop Jon Welsh and centre Chris Harris - both of Newcastle - plus Edinburgh lock Ben Toolis drop out of the 23.

Greig Laidlaw continues at scrum-half ahead of Ali Price with Sean Maitland, Tommy Seymour and Stuart Hogg making up the back three.

Scotland team: Stuart Hogg, Tommy Seymour, Huw Jones, Peter Horne (all Glasgow), Sean Maitland (Saracens), Finn Russell (Glasgow), Greig Laidlaw (Clermont Auvergne); Gordon Reid (London Irish), Stuart McInally, Simon Berghan, Grant Gilchrist (all Edinburgh), Jonny Gray (Glasgow), John Barclay (Scarlets, capt), Hamish Watson (Edinburgh), Ryan Wilson (Glasgow).

Replacements: Scott Lawson (Newcastle), Jamie Bhatti (Glasgow), Willem Nel (Edinburgh), Tim Swinson (Glasgow), Dave Denton (Worcester), Ali Price, Nick Grigg (both Glasgow), Blair Kinghorn (Edinburgh).

This is the battle of the babies...

Image source, Twitter

And the opposition...

Image source, Twitter

Dai Trembath: I know Scotland won in 1990. If that is all they can look back to it says everything about the sorry state of Scottish rugby.

Kate: Feel very conflicted during the Calcutta Cup due to my Scottish genes. However the English side of me always wins - here’s hoping the team do too!!

Ian Robertson will be commentating on his final Calcutta Cup match today as he retires from broadcasting at the end of the season after 46 years with the BBC.

He has picked out his five favourite moments from the fixture and a whole lot of them involve England being sent homeward tae think again.

Read Robbo's most cherished memories here.

Image source, Rex Features

When it comes to England at Murrayfield, wherever the conversations roams, whatever memories are dredged up, it all ends in the same place.

March 1990.

Some of England's fans turned up wearing t-shirts pre-emptively declaring themselves as Grand Slam champions.

But it was Scotland, inspired variously and to varying degrees by skipper David Sole's slow march, the early imposition of the Poll Tax and a revved-up tabloid press, that walked away with the clean sweep and the title.

Relive it all here.

JK Rowling - author of the Harry Potter series - is on her way to the match.

I think she sees this one in as stark terms as a Gryffindor v Slytherin Quidditch cup final.

Martin Johnson
Former England captain on BBC One

Scotland will want to play, that might play into England's hands, but if they get it right that is Scotland's best chance. It is intriguing.

Jeremy Guscott
Former Lions and England centre on BBC One

The conditions are ideal, it is a nice fast surface and it is build for a wonderful game.

Image source, Getty Images

Rhys Patchell a fortnight ago, Finn Russell this time around.

England coach Eddie Jones sowed some seeds of doubt around the Wales fly-half before the teams' meeting at Twickenham.

But he left it to Courtney Lawes to spell out what lies in store for Russell today.

"Finn is a confidence player so if you let him get confidence early then he's probably going to have a good game," said Lawes.

"Are we going to target him any more than any other 10? No, but we are going to target him.

"He is very good player, a quality player, and we don't want him to have a sniff at all."

Jules Plisson can attest to just how much Lawes' high opinion can hurt.

Image source, Getty Images

Image source, Getty Images

It is lucky that Nigel Owens, a referee long of experience and short of shrift, is in charge of this one.

The Welshman has already had Scotland coach Gregor Townsend whispering sweet nothings about England encroachment during his pre-match press conference.

“It will be interesting to see whether they stay onside," said Townsend when asked about England's bullwhip-quick defensive line.

And just in case Owens needed a little precis of the lawbook, he added:

“To generate that line speed, especially off first phase, you have to make sure you stay ten-metres back off line-outs before the ball is delivered. And you don’t get beyond the back foot of the ruck in phase play."