After the first four housemates to arrive at the Big Brother 9 house were given secret missions, they had to test their nerve on the rest of the new arrivals.

The fifth contestant into the house, and the first to put the couple’s cover story to the test was actress Rachel, 24. She did not suspect fake couple Mario and Stephanie, and said: “All the other boys are going to be so jealous, because you’re hot.”

Sixth in was Dale, 21, from Liverpool, who was a former Manchester United youth trialist. Next was Sylvia, 21, originally from Sierra Leone but now living in south London.

Eighth contestant was dance student Dennis, 23, from Edinburgh, who skipped into the house wearing a sparkly feather hat. He was followed by blind contestant Michael, who told his fellow Scot: “We’ll get on fine.”

Next in was non-practising Muslim Alexandra, 23, from Croydon. Eleventh housemate, Rex, 24, an executive chef from London who says he is secretly shy, showed no signs of bashfulness as he posed on the steps.

The next housemate, Mohamed, 23, from London introduced himself to TV audiences by saying: “Not everybody called Mohamed is a terrorist.”

Thirteenth housemate Rebecca, 21, a nursery nurse from Coventry, seemed overwhelmed by her entrance.

Fourteenth into the Big Brother house was albino songwriter Darnell, 26, from London. Next in was Jennifer, 22, a part-time model and mother from Durham.

The final contestant was cookie-obsessive Kathreya, 30, a massage therapist originally from Thailand.