Asim Javed, 21, who pleaded guilty to two rapes, was caught after a highly accurate picture of him was released by police using a cutting-edge computer program called EvoFIT. Officers hunting the rapist, who preyed on university students, were inundated with calls from people who recognised Javed from the picture, produced from witness descriptions.

The case was a dramatic demonstration of the accuracy of EvoFIT pictures, a far cry from those produced with older e-fit technology.

The EvoFIT was constructed by the latest victim seven days after the attack.