Kemp had entered the Diary Room to discuss Julie Goodyear, who has recently caused controversy in the house for her "two-faced" behaviour, and most recently for appearing to discuss nominations with MC Harvey.
Kemp said: "Julie is a powerful figure in the house. People might find it almost rude to nominate her.
"She's 70-odd, a television icon... people tread carefully around her."
However, while Kemp said she has a "vicious tongue", he said he was more concerned with others in the house: "What worries me is the young 'uns. They have this gang going on; all they ever talk about is that they have each other's backs.
"I know how that's working. Those three will get themselves into the final as they've got each other's votes."
Kemp has criticised the behaviour of the younger housemates before, denouncing what he identified as Danica's "bed-hopping" last week.
Celebrity Big Brother continues tonight at 9pm on Channel 5.
Photo gallery - Celebrity Big Brother Day 17:
Copyright: Channel 5