The Lockdown season's second Head of House challenge ended with housemate, Lucy beating other housemates to the winning dice.

Prior to her win, there was a tie among Neo, Ozo and Lucy for the ultimate dice but Big Brother threw in a twist that saw the housemate with the highest number emerge winner.

It is a critical time for the housemates this week after Big Brother revealed on Sunday, that all housemates will now be up for possible eviction asides the week's head of house and deputy.

Lucy chose Prince after a 20-minute break to think about her option who must be a member of the opposite sex. However, during her private session with Biggie, she selected Laycon and Neo as her second and third options.

Asides Lucy and Prince, housemates who are now up for eviction have also been instructed by Big Brother not to canvass for votes. Voting opens immediately and closes Thursday, July 31.