Viewers have been won over by the quick-witted and quirky former England international. But do they all know about the groin-grabbing and that ‘horse’ of his?

It’s difficult to know where to begin with a not-so-quick guide to Celebrity Traitors’ breakout star, Joe Marler. The BBC series has introduced a wider public to the tattooed, 18-stone-plus former England rugby union player – fans won over by his quick-witted humour, allied to a direct, confrontational form of questioning and an uncanny knack for detective work.

Not all viewers, though, will be au fait with his backstory; the 35-year-old dungaree-wearing ex-prop forward admitted he was mistaken for a sound technician by his fellow celebrities when first on set, and then asked whether he played rugby league when he revealed his previous 15-year career. For those who know rugby union, however, Marler’s style on the show has come as little surprise, save it being slightly toned down for a wider public audience.

Marler, from Heathfield in East Sussex, started out playing for Haywards Heath, captained England at under-18 level and went on to a career with Harlequins on the outskirts of south-west London, a stone’s throw from Twickenham. His shtick was the loud front-rower with a slightly edgy undertone, a dollop of eccentricity and a penchant for winding people up; including his own teammates.