ACID ATTACK!!!

431 Acid chucking cases were reported in London last year, the highest it has ever been in the capital. This year things are looking even worse as a new influx of individuals armed with sulphuric acid, a typical drain cleaner, which can also dissolve human flesh are running rampant throughout the city. Read more...

Sources:
My own knowledge being a citizen of London.

http://www.standard.co.uk/news/crime/acid-attacks-soar-in-london-everything-you-need-to-know-about-the-crime-wave-a3588076.html

https://www.thesun.co.uk/news/4016850/acid-attacks-london-uk-latest-incidents/