What could be cooler than finding 50-year-old posters, that were forgotten in a sealed off corridor in Notting Hill Gate tube station in London? Uh, well probably a lot of things, but this is pretty damned cool, don't you think! Here's the statement from Transport for London's Mike Ashworth who photographed them:
Work at (Notting Hill Gate) station has recently uncovered these amazing advertising posters in non-public areas and that date from c1956 - 1959 when the station's lifts were removed and replaced by escalators. These are in an old lift passageway. We will be leaving these intact - and please do not pester the station staff as the posters are wholly inaccessible - which is why they've probably survived 50 odd years!
You can see the full set of posters on Mike's Flickr page.