Following their agonising defeat away at Ulster last weekend, Harlequins centre James Lang insists his side are determined to exact revenge on their Irish rivals back on home soil.

Quins held a slender, two-point lead in the teams’ Heineken Champions Cup clash with just a minute to go at the Kingspan, but John Cooney’s last-ditch penalty stole the points at the death.

Victory for Ulster extended their unbeaten run in Pool 3 to three games, while the Gallagher Premiership side face a battle for a spot in the quarter-finals with just one win and two defeats so far.

But, having run the Guinness PRO14 high-flyers so close last time out, Lang, 24, is confident the pain of the result in Belfast can drive Quins to a win in front of their home fans on Friday night.

“We’ve taken that hurt into training and we’ll take it on to the field as well,” he said. “It was tough to fall short and it really hurt all of the boys, but now we’re all focused on turning it around.

“It was always going to be a tough game at their place. Ulster played really well, and I thought the boys put in a great performance.

“You can’t fault the spirit or the energy we showed. We made a couple of mistakes that let them back into it, but that’s rugby and we’ve got a great chance of putting it right straight away.”

Despite acknowledging his team are undoubtedly in for a tough test at The Stoop, teammate Michele Campagnaro is similarly optimistic that he and his side can get over the line in what is a largely do-or-die tie for the Londoners.

And having joined Quins following his Rugby World Cup exploits with Italy, the 26-year-old is hopeful another positive performance in Europe can held kick-start their somewhat stuttering form so far on the domestic front.

He said: “Ulster are a very good side - particularly at home - and I think we played really well. That gives us a lot of confidence going into this game.

“In these back-to-back European matches, you can learn a lot from the previous game. They’re unbeaten in the pool and we know it’s going to be a battle, but we’ve tried to implement improvements that will get the win.

“I think there’s a lot for us to learn and achieve moving forwards. I’ve gradually got to know the club and the boys since the World Cup and things look positive going forwards.”