The first statistic quoted about the fact that 2 women are killed every week in England and Wales includes the information that 94% are related to stalking. I suppose that fits with the majority of murders being perpetrated by partners or ex partners, but I hadn't realised that stalking featured so frequently.
The sheer incompetence and inaction of the police in the face of overwhelming evidence and red flags is blamed on lack of training. I would say it is down to misogyny and indifference.