It happens to me occassionally on busy bustling streets by people wearing charity bibs and carrying clipboards but I wouldn't classify Upland Road as a busy street, I don't get abused when I deny them my time and they are not normally on bikes. Is it just me or does anyone else find it difficult to identify/understand a motive for the person's behaviour?! Burglary/mugging?! Another thing to consider here is mental illness and there are certainly plenty of people walking the streets with behavioural issues which we might consider, and certainly appear to be, threatening but are attributes of this person's condition.