Police National Computer - Yorkshire Ripper Inquiry
Following a request from Detective Chief Superintendent Domaille on On the 26th April 1978 it was agreed to arrange for the results of the vehicle observations in "red light" areas to be processed on the Police National Computer.
Observations on vehicles in notable "red light" areas had by this time been commenced in other Northern cities within and outside West Yorkshire so that possible leads might be available to investigating officers in the event of a further Ripper crime.