World Championships in London

How many World Championship events have been held in London? Here's what I found on my World Championship site (see link in the sidebar). From the 19th century:-

• 1834 Labourdonnais - McDonnell Matches
• 1843 Staunton - Saint-Amant Matches
• 1846 Staunton - Horwitz Match
• 1851 London Tournament
• 1858-59 Paul Morphy Matches
• 1861 Anderssen - Kolisch Match
• 1862 London Tournament
• 1862 Anderssen - Paulsen Match
• 1866-76 Wilhelm Steinitz matches
• 1883 London Tournament
• Background, 1886 Steinitz - Zukertort Title Match (USA); 'After 1883 London...'

After 1883 London we have to skip ahead a full century to find the next events:-

• 1982-84 Candidates Matches; semifinals
• 1985 Montpellier Candidates Tournament; 'Candidates Reserve; London, IX, 1985.'
• 1986 Kasparov - Karpov Title Match; London/Leningrad
• 1988-90 Candidates Matches; quarterfinal match x 1; semifinal matches x 2
• 1991-93 Candidates Matches; preliminary match x 1
• 1993 Kasparov - Short PCA Title Match
• FIDE/PCA Chronology; 1993 - 1996
• 2000 Kramnik - Kasparov
• 2012 Anand - Gelfand; 'London given option for World Championship 2012'
• 2012-2013 Grand Prix; London, IX-X, 2012
• 2013 Candidates Tournament
• 2018 Carlsen - Caruana

On top of those, London has hosted a few restricted events:-

• World Chess Championship for Women; 1927 London; Menchik 1st
• World Chess Championship (Women) : 1927-39 Title Tournaments; 1927 London crosstable
  
  
• Computer Chess; 1980 & 2000
• 17th WMCCC - 2000 London; crosstable

Taking all of that into consideration, it's appropriate that London was awarded the venue for the 2018 Carlsen - Caruana match.