These are so cool! I like that London saved them and are keeping them in tact. If you have never travelled via London Tube, it is the only way to go.
Work at the 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 and will be safe.
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!
The photos were taken officially - please do credit London Underground in any links.