9 times out of 10 its the person themselves off the record, or the manager or best mate. These people are walking circuses, you dont need to make it up.
That scene in the last episode where the journo calls him up to get news for his own column was quite interesting.
The one where he said he didnt want to talk "gossip" anymore, or the one where he said he didnt want to use the word "horny"
Of course Claire Powell lets him loose to discuss with journalists what to say in his column and doesnt write it for him