Update by ESW Project Manager
Feedback on the recent archaeological investigations has been received and it appears to be most likely that the flint wall was part of an old drainage wind pump, as the historical records suggested, although no dating material was recovered during the investigation to provide solid proof. Historic maps of 1879 and 1881 show a wind pump slightly to the east of the location of the wall but close enough that it may have been directly associated. The drainage pump did not feature on the 1905 OS map so it had likely disappeared long before the modern intake was created (approx. 1960s). The original Mill was probably similar to the Boardman's Drainage Pump, details of which can be viewed on Wikipedia at the address below:
https://en.wikipedia.org/wiki/Boardman%27s_Windmill
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