Home Office research published in 2005...
"...showed that over 80% of respondents supported the use of CCTV to deal with crime in their neighbourhood."
"Finally, although the public for the most part did not feel safer, and despite their perceiving
CCTV as less effective than they initially thought, they were still predominantly in favour of
its use. Even though they concluded that it did not reduce crime, there was no pressure to
have it removed, and there were no major concerns, once people had experienced CCTV,
about infringement of civil liberties."
That sounds like less than a ringing endorsement to me. Also look at Appendix A which is rather critical of the methodology and the lack of control groups for much of the data.
And from the conclusions: "Assessed on the evidence presented in this report, CCTV cannot be deemed a success. It has cost a lot of money and it has not produced the anticipated benefits"
Basically (unsurprisingly) the Home Office has spun the results to give the answers they want.