Ahmed Khalil had to re-record all of his lines, as the lip plate in his mouth made it almost impossible to speak.
The stunt in which George Cranleigh plummets off the roof went awry, with stuntman Gareth Milne missing his cushioned target and striking the ground with his legs. Fortunately, Milne was not hurt in the incident.
This episode was watched by 10.1 million viewers on its original transmission.