A series of broadcast interviews with RMT union leader Mick Lynch have led many to question the effectiveness of more combative interview styles.

Broadcasters like Robin Day and then Jeremy Paxman pioneered a less deferential, more forthright interviewing style than had previously been the norm, as a way of countering stone-walling from media-trained politicians.

But many believe Lynch came out on top when a confrontational approach was adopted by broadcaster interviewers.