I am sorry to say that due to copyright and trade marks I am not selling a bobbin to commemorate the event. This is due to the numerous restrictions enforced by the organizers of the event. Please see the web sites below which basically says, you cannot do anything if it can be interpreted as being associated in anyway whatsoever as being linked with the Olympics.
Sorry I cannot make this bobbin.
http://www.london2012.com/about-us/our-brand/using-the-brand.php
http://www.london2012.com/documents/brand-guidelines/guide-to-protected-games-marks.pdf