I have just had a look at the London’s arms fair website to see what chemical weapons are on sale, as no one is meant to use them. However in order to see what displays, exhibits and merchandise they have,  you have to register and be vetted before given the security log in.

http://www.dsei.co.uk/page.cfm/action=ExhibList/ListID=1/t=m/goSection=15_99

Just what are they selling in there!