London is a mess nowadays. Acid attacks are common and disfigure you for life. You will need literally hundreds of cosmetic procedures to look even close to normal again. This guy threw acid on his three year old son's face last year to get back at his estranged wife.
The problem is sentencing is very lax in the UK. They get like a few years for this.
Knife crime in London is like an epidemic now. Most are not caught and those that are get short sentences. My brother's murderer only got 20 years even though he stabbed him 59 many times and the evidence against him was so strong. That is considered a lengthy sentence in the UK. Most get much less and are out in 5 years.