Date: 23rd December 2013
Location: Lambeth (Railway bridge)
Audience: Anyone driving or passing by that area - it is pretty impossible to miss.
Unfortunately this image is very unclear and I didn't get the images I had hoped to, as I was in a moving car at the time. However, you can just about make out the four billboard advertisements for The Hobbit. This whole area was just absolutely bombarded with 'The Hobbit' advertisements and the opposite side of this bridge was the similarly set. Here is a picture of the area itself, and so you can see the amount of billboards available (in this photo similarly, Kick-Ass 2 have taken up all of the billboards)
Both of these photos were found by myself on Google Maps after I tracked down the location of the photo I took, to enhance my description of the area.