The scrum took an age to set, then Antoine Dupont ran it and chipped to the right. It bounces tantalisingly bi#ut it just goes over Juan Cruz Mallia.

Paul Grayson
Former Northampton and England fly-half on BBC Radio 5 Sports Extra

The city is all about rugby, it has an enormous heritage, and the city is united behind the team. It's a magnificent place for rugby as well as a magnificent place to play rugby.

Romain Ntamack gets the game under way as the smoke clears.

Quins barrel back to halfway with Louis Lynagh hauled down, then the hosts run it right back and eventually they get the scrum near their 22 for a knock-on.

The players are out at the Stadium de Toulouse on a warm, but not quite scorching, afternoon. The music's loud, the crowd are louder and the mini-flame machines are in full effect - here we go!

BBC Radio 5 Sports Extra

Don't forget you can listen to commentary from Stadium de Toulouse from BBC Radio 5 Sports Extra - via the website, the BBC Sounds app or even on a radio!

Harlequins head coach Danny Wilson on TNT Sports: "We're trying to balance excitement and nerves. It's a brilliant occasion, we are very much the underdogs but we have come here to have a good crack. The pressure is very much on them."

On their heavy defeat to Toulouse in the pool stage: "It was a long time ago. We've learnt a lot from that. Toulouse are a world-class team with world-class individuals so we have to get a lot right like we did in Bordeaux.

"We want to play it the Quins way. The boys are very excited to have this chance."

One thing in Quins' favour is that they have the tournament's highest scorer in the form of Marcus Smith, who has racked up 74 points so far by landing 28 out of his 31 kicks at goal.

Image source, Getty Images

Toulouse have an impressive record in Europe, they are the five-times winners of this competition, this year's number one seeds and they thrashed Exeter Chiefs 64-26 in the quarters.

Image source, Getty Images

Quins are aiming for their first Champions Cup final, but they face the toughest of tasks, against many of the side that beat them 47-19 at The Stoop back in December.

But they turned in one of the great away performances to overcome Bordeaux 42-41 in the quarter-finals, so anything is possible today.

Image source, Getty Images

The Top 14 side have named a strong side which contains the dangerous half-back duo of Antoine Dupont and Romain Ntamack, with Scotland full-back Blair Kinghorn also named in the starting XV.

Toulouse: Kinghorn; Cruz Mallia, Costes, Ahki, Lebel; Ntamack, Dupont (capt); Baille, Mauvaka, Aldegheri, Flament, Meafou, Cros, Willis, Roumat.

Replacements: Marchand, Neti, Merkler, Arnold, Castro-Ferreira, Graou, Chocobares, Ramos.

Image source, Reuters

Veteran scrum-half Danny Care comes in for Will Porter. Centre Luke Northmore is the second change and replaces Oscar Beard, while prop Joe Marler comes on to the bench after missing the victory in Bordeaux.

Harlequins: Green; Lynagh, Northmore, Esterhuizen, Murley; Smith, Care; Baxter, Walker, Collier, Herbst, Lewies (capt), Cunningham-South, Evans, Dombrandt.

Replacements: Riley, Marler, Kerrod, Hammond, Chisholm, Porter, Evans, Beard.

Good afternoon, welcome to our coverage of Toulouse v Harlequins. At stake is a place in the final of the Investec Champions Cup, with Leinster lying in wait.

This could be an absolute belter, so let's crack on with the team news, shall we?