According to a BBC News article there were 458 acid attacks in London during 2016.  This G&M article reports that "Metropolitan Police Commissioner Cressida Dick said the number of acid attacks appeared to have risen in the capital, though they remained relatively rare."  Really?

Both the BBC and G&M articles provide no information whatsoever about who the perpetrators are or what are their motives, which is information rather conspicuous by its absence.   No doubt the police and victims know, so that begs the question as to why this is not being reported.