The pair have teased the potential return of former housemates for this year’s series, which will use time to play with the housemates’ minds.
Teasing the series recently, Willis said: “Days will turn into nights, time will stop, rewind and tasks will get turned on their heads.”
Clark added: “It means Big Brother can control time in all of its elements. As an ex-housemate, I know that in the house, time is the only structure you have to your day. It’s the only thing that keeps you sane in that house.
“With this series, time doesn’t mean anything. We could also revisit any Big Brother series if we wanted to which means we could even see some familiar faces…”
Asked which housemates she would love to see again, Willis replied: “Someone I would have liked to see more of - and I don’t know whether it would have been a good or bad thing – was Sally Axl.
“She was so hardcore. We may have missed out on a great housemate by her leaving after a week. I wonder what she might have given us!”
Meanwhile, Clark called for the return of classic housemates like Nikki Grahame, Aisleyne Horgan-Wallace and Makosi Musambasi.
Channel 5 recently unveiled a first look at the Big Brother: Timebomb house, which has taken inspiration from hit US drama Mad Men.
Big Brother: Timebomb starts Tuesday May 12th, at 9pm on Channel 5.