Hi,
Yeah, that's true and I do agree benefits (of running) outweigh the risks. I haven't found Birmingham to FEEL that unsafe all the time I've been here (5 years).
However, when you can still run but not alone in the dark, around some city park, then that's what's preferable! Some of them have a lot of youths hanging about, and I hate getting comments shouted (which is what happened specifically every time I went to one of them, in the autumn). I prefer to run along well lit main roads with plenty of cars around and students (although statistically, I don't know how the risk compares). Having said that, the one girl I do know who was raped whilst running was running in the day time.
As far as headtorches go, I've seen one advertised in Bournesports (mail order). You can probably get lightweight ones so I wouldn't have thought they were cumbersome.