In 2017, Liam Allan, a criminology student at Greenwich University, was charged with six counts of
rape and six of
sexual assault.
During the trial, the contents came to light of mobile telephone
messages sent by the complainant including messages asking Mr Allan for
sex. This material had been held electronically by the Police even though Mr Allan had maintained all along that the sex was consensual. The
outcome was that prosecuting counsel (Mr Jerry Hayes) offered no
evidence against Mr Allan and the case against him ended.
The investigative role of the Police gives them almost a monopoly
over the collection of information. Several lines of enquiry might have
been followed and a considerable volume of information obtained but the prosecution may not need to use all of it in a particular case. There is often so-called "UNUSED" material and it is possible that there is unused material which is capable of of undermining the case for the prosecution against the accused, or of assisting the case for the accused.