To be honest I don't see the point. Anyone committing a crime goes around in a balaclava these days so facial recognition won't be much use. They'd have much more success just banning face coverings and there would be plenty of support for it.

The problems we have are much deeper though. Petty crime is out of control and it's impacting society in obvious ways. Just go to a shop to see the measures they have to take to try to reduce theft. We don't have enough police due to a decade or two of underfunding. And even if we did we don't have enough prison space to even let harder criminals finish out their sentences - so what's the point in arresting petty criminals?

Saying that London is still one of the safest major cities in the world. Safer than any major US city. I've been living here a long time and the worst I've seen is a few phone thefts. I can walk pretty much anywhere safely at any time of the day or night. Don't let the fear mongering online fool you.