I used to see a lovely young girl called Anna a couple of years ago (London area). She was very fruity and we enjoyed OWO, CIM as well as protected vaginal and anal.
She used to go to (paid) all-night parties somewhere south of London where there were all sorts of dodgy types, with drugs, all sorts. I found I couldn't book her for around 6 weeks and when I finally got hold of her again she was very vanilla. I asked her why: she'd got oral gonorrhea and it took her ages to shift it, even though she presented asap at a GUM clinic and they'd given her antibiotics. It took several types to rid her of it, finally she was clean. She disappeared off the radar soon after.
And what I've noticed while noodling around on AW, is a preponderance of BB providers in Yorkshire and the general area. So whilst rather shocking, the above BBC News link doesn't surprise me in the slightest.