Castres up 8-0 after 4 minutes.

A 1-2 at the front of the lineout as Barlot plays Kockett at the front of the lineout and Kockett sends the hooker away down the touchline and he scores.

Botica sets up the lineout inside the Quins 22

Whetton fields the restart and Kockett sends it long with a box kick. Lynagh starts the counter but again Harlequins concede the penalty at the breakdown.

Castres take an early lead

Botica gets the game underway. Dombrant spills the ball and a Quins player plays the ball in front of another who knocks the ball on. Penalty to Castres

Castres make their way out.

And here we go...

The final round of the pool stages kicks off with Harlequins hosting Castres at the Stoop. Quins head into the encounter with a place in the round of 16 sown up while Castres are in need of a win to make the knockouts.

Harlequins claimed their third straight win over Castres the last time the two sides faced off in round one of the competition.

Stay with us for live updates as they happen.