Tyne and Wear Newcastle, Fenham Barracks Loophole. LOOPHOLED WALL: e10300 by Colin|Updated 12th May 2019
Killingworth Barrage Balloon Depot. Pictures from 2006, sadly this has been demolished to make way for housing.
PILLBOX (TYPE FW3/22): e11739 (Extant) Located in Holywell and clad in local stone. Normally completely overgrown, this pillbox was briefly visible back in 2010.