Freakonomics blogs about how only 1 out of every thousand cameras in London lead to a crime being solved.
Dan Davis, MP says that this creates:
…a huge intrusion on privacy, yet … little or no improvement in security.
But what’s the evidence of the latter. If Freakonomics is also correct in reporting that there are over a million cameras in London, then over 1000 crimes in London have been solved in London this year by cameras. The obvious question that nobody seems to be asking is whether the money could have been spent more efficiently elsewhere.