Group given 'task with no name'

The group have been given a 'task with no name', which will allow them the opportunity to increase their prize fund by £10,000.

They have not been told what the task is, only that they will pass if the Pass Or Fail meter in the large task room reaches the 'pass' mark.

The group are unaware that to pass the task, all they must do is leave the task room. Each time one of them leaves, the Pass Or Fail meter will move one step closer to the 'pass' mark.

When they received the task instructions, the group went to the task room where they found puzzles and challenges such as a padlock with 200 keys and a large knotted rope.

They set about trying to complete the challenges but when David managed to find a key that opened the padlock, the Pass or Fail meter failed to move.

Siavash said: "There is something going on that we aren't getting right."

The group has four hours to complete the task.