Last weekend we found these posters marooned in a blocked off pedestrian underpass in Leeds city centre. A little investigation shows they are both 23 years old (the Hula Hoops poster has an 'offer ends' date on the bottom and the Radio Times began covering all channels, not just the BBC, in 1991). Graphic design of this sort often has a very limited shelf life and it's usually only 'classic' designs that last any length of time. It's good to see some more pedestrian examples slipping through the net.