Live facial recognition deployments cost a lot of money. Just in Cardiff alone the police spent 3 million pounds in this technology. And they have more than 25 police officers and with brand new iPads surveilling people in real time. (I was there.)
Imagine how much money they're going to spend in London now. So besides the obvious human rights related questions, the other not so obvious one is: Who is getting these contracts? Where is that money going?