Original sentence: CCTV evidence certainly has been useful in many prosecutions, for example in determining the killers of Jamie Bulger, and catching David Copeland, the Soho nail bomber.The justification for the growth of CCTV in towns is that it deters crime - although critics claim there is still no clear evidence that the widespread use of CCTV reduces crime
Edited sentence: The justification for the growth of CCTV in towns is that it deters crime - although there is still no clear evidence that the widespread use of CCTV reduces crime