This BBC article from 2011 details some statistics on "honour" attacks: https://www.bbc.co.uk/news/uk-16014368. Including that London's Metropolitan Police ("MET") reported about 500 Islamic honour related acid attacks for 2010.
Now this search: https://www.google.com/search?q=%22honour+attack%22+acid+Mus... returns as the first hit an article in which the MET claims [1] that Islamic honour attacks are basically a myth.
I wonder how the MET managed to report up to 500 per year to 2010 (first link above), then only one for the subsequent 15 years [1]?
It's curious that there are charities set up to aid acid attack victims[2] which report that in relative terms a lot of "honour attacks" happen in Pakistan; and that with a large UK Pakistani population there's only one attack in London in 15 years.
So, what's going on there.
Obviously it's fantastic if somehow such "honour attacks" were reduced by nearly 100% in one year yet highly disturbing if the police report that and it's not true.
Aside from that question, what I did find is a huge increase in use by gangs and a much wider use than I imagined for "revenge attacks" (spurned lovers, stalkers, etc.).
[1] https://www.bbc.co.uk/bbcthree/article/5d38c003-c54a-4513-a3...