"The police have impounded the ambulance for forensic examination, which is going to be a hell of a job considering the state of our motors." I can just picture the police reading the forensics report... "well, there are more than 50 blood stains of varying sizes, that they've identified as coming from 14 different people... hair samples from another 20 or so... and more fibre samples than we can count..." And if the attack happened in Bounds Green, why on earth is the incident room down in Lewisham?