Image source, Getty Images

Titanic clashes all around the pitch today.

The coming-together of the two numbers eights is almost inter-planetary though.

Ross Moriarty, who played age-grade rugby for England but was always destined for the red of Wales, meets Billy Vunipola, born in Australia, brought up in Wales, but decked in white.

When the year ends in a nine and England play Wales away in a Six Nations match, it only ends one way...

Scottie Gibbs dancing across the Wembley turf like Sir Stanley Matthews on Cup Final day.

Twenty years ago, saw perhaps the most memorable of all Wales' wins over England.

It denied England the Grand Slam, handed Scotland the title and provided a story to be handed down for generations to come.

And who better to tell it than Max Boyce. Click above for a glorious snifter of nostalgia.

Becky Grey
BBC Sport in Cardiff

Principality karaoke has begun and the crowd is, of course, in good voice.

No lyrics were needed on the big screen for Delilah though!

Image source, BBC Sport

Dafydd Pritchard
BBC Sport Wales at the Principality Stadium

Image source, Rex

The Wales players have returned to their changing room after their warm-ups and the male voice choir is helping turn the volume up to 11 inside the Principality Stadium.

England are still out there and are enjoying one last huddle before going back indoors.

With 'Delilah' ringing out around the ground, it will be difficult for their players to make themselves heard in that huddle.

BBC Radio 5 live

England head coach Eddie Jones has been speaking to Chris Jones on BBC Radio 5 live. Here's what he said:

"We didn't see any tractors on the M4 - I'm sure there are some still waiting though," he said after being asked whether there had been any problems getting to the stadium.

"There have been 138 years of matches between Wales and England - we're honoured to be part of it and are ready to play well. The players know their jobs and I have no doubt they will be able to execute their jobs.

"We've had a good prep and we're ready to take them. It's a fantastic occasion, one of the historic games in world rugby and we're lucky to be part of it."

Image source, Getty

If Alex Cuthbert had been the hero in 2013, he was left exposed for England's smash-and-grab winning try in the 2017 contest.

The visitors had been bullied by Wales for much of the match, but kept within range and, with five minutes left, George Ford and Owen Farrell punished Jonathan Davies wayward clearance, releasing Elliot Daly to scamper round Cuthbert and in for a the knockout score.

Martin Johnson
Former England captain and coach on BBC One

We quite enjoy it here, we pretend we don’t but we do. Days like this are what make this tournament.

Sam Warburton
Former Wales captain on BBC One

Excluding World Cups, this is the biggest game in Welsh rugby and it happens every two years. Everyone knows about it in the country, whether you are a rugby fan or not. It is just on everybody's lips.

BBC One

Live television coverage on BBC One is under way.

Click on the top of this page to get Cardiff in glorious technicolor and tenor-rich sound.

Image source, Getty

England captain Owen Farrell is confident that any similar shennanigans will not throw his team off their stride.

"If anything does get thrown at us, I'd expect or hope we would be calm enough to deal with it, whatever," Farrell said.

"I am sure they Wales will be up for this game, we have got to make sure we are in the right place. But want to be right for kick-off, not before that."

Never mind the Brynglas tunnel.

Four years ago, it was the Millennium Stadium tunnel that got feisty.

England captain Chris Robshaw refused to lead his team out until assured that Wales would follow soon after and not leave them waiting amid the cold air and hot atmosphere of the Millennium Stadium.

Mike Brown told referee Jerome Garces that England would head back inside if Wales were not on the pitch in 60 seconds time.

Wales were prompt enough to prevent any diplomatic incident, but were beaten 21-16.

Jerry Guscott
Former Lions and England centre

England are favourites, they’ve overtaken Wales in the world rankings, from four to three. Wales have gone backwards, the Welsh performance has been average. In my eyes the win against France was gifted to them. There was a turnaround against Italy, but it wasn’t accomplished,

England are favourites by their performances and the way they played – that is the reality. No-one should shy away from it, and I can’t understand why Eddie does.

Becky Grey
BBC Sport in Cardiff

It’s been a particularly rowdy atmosphere for BBC Radio 5 live’s broadcasts this afternoon...

The team were sat on a balcony in the Angel hotel overlooking rugby fans who were getting a few drinks in before they head down the road to the Principality.

Image source, BBC Sport

Image source, BBC Sport

There will be live commentary of this match on BBC Radio 5 live. Click at the top of this page to listen in.

Image source, Getty Images

The day before that match, in Colwyn Bay, England's Under-20 side did what their senior counterparts couldn't.

A team containing Kyle Sinckler, Henry Slade and Jack Nowell, all starters today, along with future England internationals Anthony Watson and Jack Clifford, beat Wales 28-15 to clinch their age-grade Six Nations.

Nowell looks like a mascot that tripped in the mud.

Image source, Getty

Seismic.

England came to the Millennium Stadium aiming for the Grand Slam. They departed with mocking chants of 'Easy! Easy!' echoing in their ears.

Wales racked up a record win over England, running out 30-3 victors to snatch the pot and leave England coach Stuart Lancaster with a sobering reality check on the quality of his young squad.

Matthew Hobbs
BBC Sport reporter at the Principality Stadium

Image source, getty

A smattering of fans had taken their seats a full two-and-a-half hours before kick-off, such is the anticipation for this match.

The roof is open and grey skies line the higher reaches of the Principality Stadium, but the day is mild, dry and calm; perfect for rugby.

A penny for the thoughts of England team-mates Ben Moon, Mark Wilson, Tom Curry and Henry Slade, who will walk out to face Wales on home turf for the first time. A sold-out crowd is unlikely to let them settle.

Image source, Getty

Today's prize bout takes the front page of the Daily Telegraph's dedicated rugby supplement, with Alun Wyn Jones and Owen Farrell making eyes at each other.

Image source, Daily Telegraph

England's fly-half comes up so flat on the Guardian sport supplement he is over the gain line and stealing inches off football.

Image source, The Guardian

The Western Mail meanwhile have noticed a statistical quirk...

Image source, Western Mail

Smallsy: I love this match. How is it possible to wake up the day of a game kicking off at 1645 already nervous? Come on England.#bbcrugby #WALvENG

Simon Gleave
Head of sports analysis, Gracenote

Image source, Getty Images

With neither Sergio Parisse nor Stuart Hogg playing this weekend, Owen Farrell will be the only player to have started every one of his team's Six Nations matches since the 2015 Rugby World Cup. Farrell missed the whole of the 2015 competition through injury so his streak of 18 straight starts in the competition is the current longest.

Ben Moon is the oldest loosehead prop to start for England in the Six Nations Championship since Andrew Sheridan in 2011.