Why? 'I’m a bit hungover,' he admitted, having lived it up at London Fashion Week over the last few days.
Despite that, he assured us that he’s really not as big a party animal as it may appear.
'It’s a big misconception that I’m partying all the time,' he said, adding that he’s got to get up for his Radio 1 breakfast show every morning.
As host, though, it was down to him as host to get our guests in the mood. A hard job?
No. 'It’s really easy to get a party started because everyone’s always up for it in London,' he said.