British & Irish Lions centre Jamie Roberts has warned semi-final opponents London Wasps that his Cardiff Blues side "will be confident wherever we go" in the Amlin Challenge Cup.
Roberts grabbed one of the Blues' seven tries in their 55-20 demolition job on another English Premiership outfit, Newcastle Falcons, in the quarter-final to reach the last four of a European tournament for the second successive season.
"We will be confident wherever we have to go in this tournament. We always knew we would have to go away in the semi-finals and while that is never easy, we have shown we are capable of going away and playing well this season," said Roberts.
"We were doing all the hard work in the first-half against the falcons, but then coughing up the ball too easily. But in the first 20 minutes of the second half we played some excellent rugby.
"On top of that Ben Blair didn't miss a kick and we really killed them off then. But let's not get carried away.
"We've got a huge game next weekend against the Scarlets in what is a do-or-die game for them. It is also hugely important for us because if we win it will guarantee us Heineken Cup rugby.
"I'm sure the Scarlets will be up for the game and will be hurting from what happened to them in Toulon in the Amlin quarter-final."
Blues coach Dai Young was full of praise for the way his side adapted their tactics at the start of the second half and notched 31 unanswered points in 18 minutes to secure victory.
Having seen his side score 88 points on the road in Ulster and Newcastle in their last two games, he isn't worried about making another trip in the semi-finals. His only concern is that Wasps head coach Shaun Edwards might know too much about some of his players because of his involvement with Wales.
"Shaun will know all about the strengths, and perhaps one or two weaknesses, of a number of our Welsh players, so we are hardly going to be a surprise package to him," admitted Young.
"It is up to us to think outside the box a bit for this game. We know that Wasps are used to cup rugby and that they always manage to pull something out of the bag each season.
"They may not be as strong as they used to be, but they are still winning games and have a lot of player who we respect.
"We know we will have to play top quality rugby to beat them, although it is a game to which we are really looking forward. We are a different team now we have all our international players back with us."
While Wasps were beating Gloucester 42-26, Young was able to applaud the endeavor of his side as they ran in seven tries and conceded only two at Kingston Park.
"It's always nice to get a result like that on the back of a good performance. In the first 30 minutes we tried to push the passes too much, so I told them to go through a few extra phases in the second half," said Young.
"That helped and we scored a lot of points very quickly. It was a difficult message to get across because I didn't want to stop them playing.
"We just needed to tighten things up a little bit. But we did play well and there is no doubt about that.
"We've scored 88 points in our last two away matches and that is good in anyone's book. But we are keeping our feet on the ground - things went for us today, with a few kind bounces of the ball, and a couple of passes stuck."