Northampton booked their place in the Heineken Cup quarter-finals with a 33-23 win over Glasgow at Franklin’s Gardens.

Bruce Reihana crossed twice as the Saints were forced to stage a second-half comeback  to clinch a place behind Toulouse in Pool 3 as one of the best runners-up.

Glasgow had threatened to scupper their qualification hopes when they lead 13-5 at half-time thanks to a near length of the field interception try by wing Sean Lamont. Outside-half Dan Parks booted the conversion and two penalties as the Scottish outfit searched for a surprise first win in this season’s competition.

But with qualification hanging in the balance, Northampton struck back after the break.

Mark Soden and Ben Cohen went over to take the lead for the first time before Kiwi Reihana glided through Glasgow’s clutches to secure the crucial bonus point.

Hooker Steve Thompson, who scored the late winning try against Llanelli last weekend, pulled off another sparkling try when he galloped 70 metres to score after intercepting Parks’ pass.

Glasgow at least ended a bitterly disappointing campaign with a try when scrum-half Greame Beveridge emerged from a driving surge over the line with the ball.