Here are my picks for awesome prints commemorating the London Olympics. Love them all & if I didn't already have a ton of prints waiting to be framed & hung, I would get myself a copy (my favorite is at the bottom) in a heartbeat.
2012 London Olympics by Andrew Maunders & inspired by the 1948 London Olympic games poster. Get it here.
17 Days of Summer by Jordan Cheung. There are no official Olympics branding elements but you'd be pretty daft not to know. More of Jordan's work here.
East End Prints: London Olympics by Dieter Braun. This one is by far my favorite. You can get it here.