I was reminded by an article in edition 14 of Coastal View and Moor News that I had visited this Auxiliary Unit site way back in 2003 with a very low res digital camera before I ever thought of creating Hidden Teesside.

Auxiliary Units were going to form a resistance force should Germany have invaded during the war.

A plan of the bunker can be found on Auxunit News although unfortunately its now little more than a depression in the ground.