Zeus, a.k.a. Halfwit, has been told that this week’s shopping task is a phoney, and that this week’s actual task is in his hands.

One viewer will enter the house as part of this week’s shopping task, for which housemates will embrace all things Greek.

The housemates have failed this week’s special birthday shopping task, forcing them to live on basic rations for a second week.

Karly was set her Birthday Week task yesterday, taking on ex-Big Brother 7 housemate Nikki Grahame at the silent disco.

Craig and Makosi from Big Brother 6 returned to the house last night to compete against Siavash in the infamous box task.

The birthday week tasks continue with housemates from BB7 and BB8 returning to the show today

UPDATED: BB2’s Dean faces off against Lisa before housemates bet on BB3 Egg and Spoon race featuring Alex, Lee and Sophie

This week’s shopping task, in which the housemates will complete nine classic Big Brother challenges, has begun.