There will be a minute's silence and a pre-match wreath-laying ceremony for the victims of the  Westminster attack in central London on Wednesday , while the stadium's arch will be lit up in red and white and England will wear black armbands.

Tributes will also be paid to former England manager Graham Taylor  who died in January .

Terminally ill five-year-old Bradley Lowery  will be mascot , and Gareth Southgate has urged players and supporters to represent England in the right way at Wembley.

"We know how important the national football team is for the feeling of the nation and it's a great opportunity for everybody to pay their respects and to show that as a country we go on," said Southgate.

Image source, Getty Images

The St George's Cross flags outside Wembley are flying at half mast today in tribute to the victims of the Westminster attack and former England manager Graham Taylor, who died aged 72 in January.

Christian Reilly: A 34 year old striker leading the line? Doesn't really bode well for Russia 2018, does it?

Matt Harding: Rashford for Defoe and that is one young starting XI - good signs for the future... (although we've said that before).

Darren W: That's the best team we can muster today... shows how backwards we have gone. No strength in depth at all.

Richard:  Barkley on the bench is another insult to him but, from an Everton point of view, I'm delighted.

England boss Gareth Southgate on ITV: "Jermain Defoe is very excited. He's a senior player with a point to prove. He's impressed us all this week.

"The formation we had already decided on. It was a plus how Michael Keane played in Germany. It's a great day for him - I think it's his Wembley debut."

On the tributes to Graham Taylor: "The one regret is that I hope he understood how well revered he was. Hopefully this is a special day for his family."

Back to Wembley. Gareth Southgate, still sporting his well-trimmed designer beard, looks and sounds remarkably relaxed as he faces the TV cameras in the tunnel.

Here's what the gaffer has to say...

Image source, Getty Images

Scotland are four points adrift of Slovenia, the visitors lying second behind leaders England - who host Lithuania on Sunday - in  World Cup qualifying Group F.

And Gordon Strachan's side, who are 16 places below Slovenia in the world rankings in 67th place, have gone four games without a win.

Will Strach's P45 be in the post if his team loses tonight?

Image source, PA

Celtic striker Leigh Griffiths will lead the line for Scotland against Slovenia on Sunday night and his club-mate Kieran Tierney will start at right-back, BBC Scotland has learned.

The duo are among a host of Celtic players who were rested for the  1-1 friendly draw  with Canada.

Craig Gordon, Scott Brown, James Forrest and Stuart Armstrong are also pushing to be involved.

Image source, Getty Images

West Brom veteran Gareth McAuley is certain to start in defence and netting his 10th international goal would move the 37-year-old above George Best in the Northern Ireland goalscoring charts.  

A win will be just the ticket for Norn Iron tonight. A ticket to the 2018 World Cup play-offs perhaps? The Northern Irish are second in Group C, way adrift of leaders Germany, but a win against Norway will consolidate their place behind the world champions.

Josh Magennis looks likely to join Corry Evans and Aaron Hughes in missing Northern Ireland's World Cup qualifier against Norway on Sunday.

Charlton's Magennis, 27, is said to be "extremely doubtful" because of a hamstring problem while Evans (groin) and Hughes (calf) are ruled out.

Magennis' injury and Kyle Lafferty's ongoing struggles at Norwich may lead to Conor Washington starting in attack.

QPR striker Washington, 24, has scored in both his starts at Windsor Park.

Image source, Getty Images

While the smell of greasy burgers and oily onions wafts under the nose of England fans shuffling down Wembley Way, only the car park attendants have turned up so far at Parks Hampden and Windsor.

Scotland and Northern Ireland both kick off at 19:45 BST remember.

So Danny Mills reckons the Ox will sit alongside Eric Dier, while Phil McNulty thinks the Arsenal man will play out wide. Who knows. Hopefully Oxlade-Chamberlain.

Welcome to the latest episode of Guess Pep's Formation, hosted this week by guest presenter Gareth Southgate.

Phil McNulty
BBC Sport chief football writer at Wembley

England will face a packed Lithuania defence today - so just the occasion for an expert marksman to make his first international appearance since they faced Chile in November 2013.

Sunderland's striker may by 34 but his Premier League pedigree remains undimmed and he is part of an attacking selection by manager Gareth Southgate.

No surprise to see John Stones back alongside Burnley's Michael Keane with Gary Cahill suspended and Manchester United pair Phil Jones and Chris Smalling injured.

Alex Oxlade-Chamberlain and Raheem Sterling will provide the width as England go for goals.

Danny Mills
Ex-Leeds defender on BBC Radio 5 live

Image source, .

Suddenly England managers pick players on form and it’s a surprise.

Dele Alli will play just off sole striker Jermain Defoe, just like he does at Tottenham alongside Harry Kane. 

There's Raheem Sterling on one side of the attacking midfield and Adam Lallana will drift from the other side.

Eric Dier will be the main sitting midfielder, but he might drop into central defence to make a three if the full-backs want to attack more.

That's a vote of no-confidence from Zezti then... Everton midfielder Ross Barkley is among the substitutes. 

Image source, Reuters

Andy White:  Considering England's current identity is abject failure, any other identity would be an improvement.

Zezti:  If Barkley, one of the best performers from the club topping the form table, doesnt start then I'll lose all faith in Southgate.

Jay:  Super excited to see Defoe score lots of goals, carry England to the WC and, in line with tradition, fail miserably at the WC 

That was the question posed by BBC Sport's Dan Walker earlier, answered by ex-England international Andy Cole and former Wales man John Hartson.

Those two certainly know a thing about sticking the ball in the onion bag.

Here they preview Sunday's international matches including England v Lithuania, Northern Ireland v Norway, and Scotland v Slovenia.  

As we suspected, Jermain Defoe starts for England. It is the 34-year-old striker's first cap since he played against Chile in November 2013.

Four changes from the side which started over in Germany on Wednesday.

Full team news to come...

As well as our live text commentary, you can listen to England v Lithuania on BBC Radio 5 live from 17:00 BST. John Murray and Ian Dennis are joined by ex-England captain Terry Butcher and former England defender Danny Mills.

Jason Mohammad and Robbie Savage will then be taking your calls after the game on 606, before commentary of Scotland 's game against Slovenia begins at 19:45 BST.

Northern Ireland 's Group C qualifier against Norway will be on BBC Radio Ulster from 19:30 BST.