Billy Vunipola says a recent ticking off from his Tongan aunties back in Australia will help him to keep his cool in Saturday’s European Champions Cup final against Clermont-Auvergne at Murrayfield.

Vunipola admitted that he had allowed his temper to “boil over” on a couple of occasions recently, notably in last month’s 27-25 comeback victory at Northampton and before that against Harlequins at Wembley.

Those losses of temper prompted a dressing down from his aunties Down Under, where he was born. They told him to “stop being so arrogant and spoiled”.