It sounds like that was a partner / ex-partner that's done that as he was in the car with them, so presumably police know exactly who they're looking for. Strange that they don't seem to be asking for the public's help in locating them by giving us a description though, maybe later today.
Surely the attacker has to have known that they will likely be relatively easily identified, if it is someone known to the victims?
I thought and hoped we had got past something as cruel as acid attacks, by handing out ultra long sentences for it after the spate of them a few years ago, is that not the case?