Crackdown seems to be working well - despite the numpties who write letters to the local press saying that it is a grotesque invasion of privacy, or that it will only be used by maliciously-minded individuals who are upset that someone has overtaken them (I kid you not). Funnily enough, a week after one of these letters appeared in the paper, there was an article about a young chap who, after being caught speeding through a local village at 60 mph (past a school, no less) had his licence taken away. This same article mentioned that the individual had been reported to Crackdown
eleven times already. So I suspect the plod had a strong incentive to look out for him (but of course, all those reports were probably 'malicious'
).
The problem - as others have mentioned - is consistently getting these kind of schemes rolled out across the country. From reading Martin Porter's blog, it doesn't seem as if there is any website for his locality. Likewise (IIRC) there is nothing in Hampshire.