Rob Herring and Sean Reidy grab a brace of tries as Ulster romp past rotated Harlequins

Ulster will return to England on Saturday night to take on Northampton Saints at Franklin Gardens in the last eight

Ulster's Sean Reidy on his way to scoring his side's eighth try of the game at Twickenham Stoop. Picture: Adam Davy/PA 

HARLEQUINS 21 ULSTER 57 

Ulster romped into the European Challenge Cup quarter-finals as they swept aside Harlequins on Sunday night at The Stoop scoring eight tries in a dominant 57-21 victory.