My 2p: I have been to London on several occasions since 1999. I love the small island and intend to visit again. I remember seeing knife drop off boxes at the tube stations for the first time in 2007.
One of my daily news sources slightly less reputable: https://www.bbc.com/news/uk-england-london-46095279
From the liberal wiki: There were 607,083 Muslims reported in the 2001 census in the Greater London area.<sup id=”cite_ref-1″ class=”reference”>[1]</sup> In the 2011 census Office for National Statistics, the proportion of Muslims in London had risen to 12.4% of the population (21% of England’s Muslims). In the boroughs of Newham and Tower Hamlets, the percentages of Muslims were over 30%.