Gordon in the morning: Phone blocked

It's all about responsibility:

ONE DIRECTION aren't allowed to have Simon Cowell's phone number in case they put it on Twitter.

Yeah, that'd be it. Because he'd love to hear from them, all the time, any time. It's just, you know, the worry about the number turning up on Twitter.
"What about your address, boss?"
"Um... oh, if I give you that... erm... you might... get confused. Yes, that's it, you might get confused and use it by mistake when you're delivering pizza."
"Don't you mean 'ordering pizza', boss?"
"I know what I meant."