on google londons blitz 1941..put), may 10th and 11th may 41 heaverist last, apart from the one in 1944.6 nights,,sorry ,about lack of intrest on blitz as bombers were not my fav, planes,.my dad was in the blitz,coventry was one his BIRTHDAY 15TH NOV 40.WHAT A NIGHT AIR RAID SIRENS AT 11PM,BUT HELL, IT WAS,,NEVER STOPED HERE HE TELLS ME,JUST,NOW, ANTI AIRCRAFT FIRE BOOMBOOM whistlin bombs SEARCH LIGHTS,,ALL NIGHT NO SLEEP.AND SCHOOL WAS OUT,....HOPE IT HELPS GARY.