Kick-off: 17:30 BST
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Winners to face Toulouse in the semi-finals
FT: Exeter 38-25 Northampton
That's it from us - thanks for joining our live text coverage as Exeter booked their place in the European Cup semi-final.
They join Toulouse, Racing 92 and fellow Premiership side Saracens in the last four.
Chiefs will face Toulouse, while Sarries will play Racing - with a potential all-English final on the cards.
Until next time...
FT: Exeter 38-15 Northampton
Northampton head Chris Boyd speaking to BT Sport: "We can't fault the effort, but we had to work too hard to get our poitns and they did not have to work hard enough to get their's. Manny is a great kid and it was remarkable to survive out there for 70 minutes so well."
FT: Exeter 38-15 Northampton
Exeter's director of rugby Rob Baxter speaking to BT Sport: "It felt like we struggled to get the consistency in our game that we have had before. Northampton showed great energy and enthusiasm. But credit to our players who had the expectation on them and everything to lose."
FT: Exeter 38-15 Northampton
Slidin' into the European Cup semi-final...
Image source, Getty ImagesFT: Exeter 38-15 Northampton
Northampton Saints were written off before the game but they battled on until the final minute.
Ultimately, Premiership leaders Exeter were too good and they will face four-time winners Toulouse in their first European Cup semi-final.
Gareth Steenson pumps the ball into touch and Exter book their place in a first European Cup semi-final.
Jacques Vermeulen (con Joe Simmonds)
Job (definitely) done!
Jacques Vermeulen bashes his way through in midfield before stretching his legs and running in his second try.
It's Exeter's fifth try and victory is now assured, as Joe Simmonds adds another couple of points from the tee.
Exeter 31-15 Northampton
Time for bit of aerial ping pong as Stuart Hogg and Alex Mitchell exchange a couple of kicks.
These are valuable seconds being lost by Saints and Exeter are edging closer to that first European Cup semi-final.
Exeter 31-15 Northampton
Nineteen-year-old prop Emmanuel Iyogun is making a name for himself this evening.
He is influential as Saints win another scrum against the head.
It's the teenager's last act as he is replaced by Alex Seville for the final eight minutes.
Well played that man!
Exeter 31-15 Northampton
Saints overthrow the ball in the line-out and Exeter have possession on their own try line.
The chance disappears again and Exeter can clear the ball.
Exeter 31-15 Northampton
Tackle after tackle.
Saints roll through the phases close to the Exeter line but they eventually win the penalty for an offside in the defence.
Dan Biggar nudges the ball into touch and here comes the squeeze.
Exeter 31-15 Northampton
Saints have just not gone away and they're still battling hard in the Devon sunset.
Teenage debutant Emmanuel Iyogun is congratulated by his teammates for his part in another successful scrummage.
Dan Biggar pops the ball into touch and Saints roll towards the Exeter line, but they're just held up short.
Joe Simmonds
The Exeter fly-half makes no mistake and the hosts extend their lead to beyond two converted tries.
Exeter 28-15 Northampton
Exeter win the penalty inside the Saints half and this would be a welcome cushion.
Exeter 28-15 Northampton
Natasha Hunt
England World Cup winning scrum-half on BBC Radio 5 Live Sports Extra
That was such a good angle from Fraser Dingwall.
Fraser Dingwall
Now then.
Is there a glimmer of hopes for Saints?
It's a move straight off the traning field as the visitors win the line-out before it's fed to Fraser Dingwall in midfield.
The centre cuts a line back against the traffic and it's a great try. Dan Biggar misses the conversion.
Exeter 28-10 Northampton
Natasha Hunt
England World Cup winning scrum-half on BBC Radio 5 Live Sports Extra
Exeter had Stuart Hogg and Jack Nowell lurking wide and their threat means that that Northampton couldn't line up too narrow.
If Exeter don't get you one way, they will get you the other.
Jonny Hill (con Joe Simmonds)
Job (all but) done!
Jonny Hill powers over from close range against a tiring Saints defence, who have been up against it since the break.
Joe Simmonds adds the conversion as Exeter near the last four.
Exeter 21-10 Northampton
Crash. Bang. Wallop.
The lilac line is relentless in it's pursuit of a first Champions Cup semi-final.
Saints are defending well but they're having to take a lot of contact.
Exeter 21-10 Northampton
That might just be the difference between the two sides.
Northampton respond well to going further behind and they have the line-out deep in the Exeter half.
But they lack that clinical edge and Exeter win the scrum after getting their hands on the ball.
Chance blown.