Back in March (2015) a UK parliamentary select committee published a report  which expounded, amongst other things, its views on the police uploading arrest photographs, including those of people not subsequently convicted, into a facial recognition database. The police started doing this on the quiet, without any public announcement or public debate on their reasons for doing it or its impact on individual freedoms.
Here is what the Select Committee had to say:
“We fully appreciate the positive impact that facial recognition software could have on the detection and prevention of crime. However, it is troubling that the governance arrangements were not fully considered and implemented prior to the software being `switched on’. This appears to be a further example of a lack of oversight by the Government where biometrics is concerned; a situation that could have been avoided had a comprehensive biometrics strategy been developed and published.”
[‘Current and future uses of biometric data and technologies’ report, House of Commons Science and Technology select committee, 2015]