Yes, Minister, Series Three (1982)

[Bernard is waiting at the Hackers' flat for the Minister to come home]

Annie Hacker:
He's obviously been held up. You can stamp some of these cards for me while you're waiting if you like.

Bernard Woolley:
Oh, but aren't they to constituents?

Annie:
Yes.

Bernard:
Well, that's not government business, Mrs Hacker, that's political activity. I'm not allowed to help with the Minister's political activities.

Annie:
Suppose they were all to journalists?

Bernard:
Oh, that would be alright.

Annie:
They're all to journalists.

Bernard:
Fine. I suppose licking is an essential part of relationships with the press.