Wigan Warriors winger Josh Charnley has insisted that he and his teammates will have to be on their best form to defeat the London Broncos in the Challenge Cup semi-final.

Wigan head into the July 27 contest as favourites following their 48-4 victory over the Widnes Vikings in the quarter-finals on Monday.

"London are a tricky team," Charnley told BBC Radio Manchester. "They've got some good players so we'll need to play well to get the win against them."

Broncos are currently at the bottom of the Super League table.