I live in London and theres definitely no lack of conference facilities or tourist activities, as well as an extensive if occasionally unreliable public transport system. If this is over a weekend of course, there is a large chance that several lines or sections of lines on the Tube will shut down for engineering work.

Is there space for an external links section on the nomination page?
wikitravel.org/en/London , tfl.gov.uk and visitlondon.com etc