We know the Olympics gave the captial a huge boost in tourism, but how can that surge be sustained?
Well for the next few days London's economy is set for a multi-million pound boost, simply by hosting an exhibition.
That exhibition brings together 180 countries all showing off their tourist credentials - so can the capital compete with the likes of Floridia and the Carribean? Dan Hewit has been finding out.
Boris Johnson will today deliver a key note speech to the World Islamic Economic Forum which is currently underway at the Excel Centre in east London.
The venue is the first outside of Asia to host the major international conference - bolstering the capital's standing as the largest Islamic financial centre in the West.
Europe's biggest exhibition of comics and science fiction opens at Excel today with over 80,000 visitors expected. The conference is a celebration of sci- fi shows, video games and comics.
There are a host of special guests including Thomas Jane who starred in The Punisher and Sydney White from Young Dracula
Two companies have been ejected from the arms fair in east London for promoting illegal torture weapons. The firms are:
- French firm, MagForce International
- Chinese company, Tianjin MyWay International Trading
The action came after Green Party MP Caroline Lucas raised the issue in the House of Commons. The companies were promoting handheld projectile electric shock weapons, weighted leg cuffs, and stun batons, according to the website of Caroline Lucas.
The world's largest, and most controversial arms fair opened its doors in London today, showcasing the latest defence technology.
The threat of U.S military action in Syria hangs heavy over this year's event, with protesters saying London has a moral duty not to host the exhibition. From there our Political Correspondent Simon Harris reports.
Sharon Irvine I can't even find the words to describe both the anger and resignation I feel about this and most of the other things the government is allowing to fuel hatred, discrimination and destruction.
Sarah Waldron of the Campaign Against the Arms Trade claimed that the event would welcome "some of the most authoritarian regimes in the world".