The Importance of Knowing When It's Time to Step Down

Ligland General chief executive Nigel Hoyle is stepping down this week. He says the decision was not that difficult and he's looking forward to his next challenge. The average tenure of a chief executive is 3-4 years, but there are two new bosses coming in at Ligland - Nicola Sturgeon and Dave Rennie. Do you think they'll cling on too long? "I don't know whether there's a point"