Knife violence has become so rife in London that the capital's main newspaper, The Evening Standard, now has a dedicated 'Stabbing' page on its website: https://www.standard.co.uk/topic/stabbing

It's a very busy page:

So far this year, more than 30 people have been stabbed to death in London:

(Source: The Sun.)

Youth gang culture feeds knife crime, and three south London boroughs - Lambeth, Wandsworth and Merton - have taken the unprecedented step of installing knife arches in schools.

However, a shortage of beat officers has restricted the police's ability to tackle the stabbing epidemic on the streets; and political constraints on stop-and-search have prevented them targeting youth minorities statistically most likely to be carrying and using knives.

Both issues must be rectified urgently to prevent further carnage in the capital.