Where there was space on a factory building site, an external shelter was likely to be the favoured solution, reducing the likelihood of the staff air raid shelter being crushed by the building above collapsing on it or the escape route being blocked by post-impact debris. At the Littlewoods site in Edge Hill, the shelter was built at the eastern edge of Wavertree Park and was aligned parallel to the factory building to allow rapid filling via several gateways. The factory itself is an attractive 1938 art deco building, which surprisingly for its date was not built with an integral heavily protected basement shelter.
Im reckoning they were simply an artist who retreated down here & sketched various people in the vicinity but whatever the reasoning they are an amazing piece of history that really should be saved.
Thanks For looking