Dylan Hartley motivated by Heineken Cup 'hurt'

England and Northampton Saints hooker Dylan Hartley tells how the "hurt" of losing last year's Heineken Cup final is extra motivation as Twickenham, the venue for this year's final, hosts the launch for this season's tournament.

Northampton begin their campaign away to two-time winners Munster before facing Castres and Scarlets in Pool 1 of European rugby union's elite club competition.