Oh, I wouldn't suggest you refrain. But as the Worboys case (http://www.judiciary.gov.uk/Resources/JCO/Documents/Judgments/dsd-and-nbv-v-met-police.pdf) shows, it may take 100 more rapes for your complaint to be taken seriously and for you not to be written off as "a drunk or an addict". The particularly telling evidence in that case is where the judge praises the MPS rape complaint handbook - and then takes on board the evidence of an MPS officer to the effect

The officers – as was accepted in court – were affected by pressure… to dismiss allegations so as to improve their clear up rates"