There are a lot of electrics and switches down there and lights on the wall. A big table and lots of silt that could contain anything from back then.”
Chris, who works as a managing director, currently lives nearby with his wife and three-week-old daughter while the house undergoes extensive reonvations.
It is thought the bunker had been built for up to 100 local residents to take shelter from Nazi air raids.
Middlesbrough had the unfortunate distinction of being the first major British town to be attacked by Luftwaffe bombers during the Blitz on the evening of May 25 1940