Q.B.I. was in operation at Croydon or Heston.

Ad: This forum contains affiliate links to products on Amazon and eBay. More information in Terms and rules

pgarwood

Recruit
4
0
Oct 12, 2015
I am researching the early days of WWII. In 1939 the London Balloon Barrage was instructed not to fly if-"Q.B.I. was in operation at Croydon or Heston." Can anyone help my tired brain with the acronym Q.B.I.?? Thanks
 

Users who are viewing this thread