[BIG-BRO-FAN]

Big Brother is planning a week of surprises to mark its tenth birthday, according to its programme descriptions.

The Daily Star reports that the housemates will be subjected to "shocking" and "unexpected" twists during the week-long celebration, beginning on Monday, July 13.

The weekday shows have been billed as having "surprises aplenty" to celebrate the date, while the Friday eviction night promises "extravagant surprises".

The description for Friday's second show reads: "With an evening of birthday surprises in store, the second part of eviction night will see Big Brother celebrate ten years with some shocking turns and unexpected excitement."

Rumours have suggested that the winners of previous series may enter the house.