Historians had previously thought that such chemical tests in the UK were less extensive but new research has revealed how widespread they were, including the discovery of one of the Tube in the 1960s (pictured)

How British government carried out secret biological warfare tests on London Tube passengers in 1960s during Cold War

New research suggests Britons were exposed to chemical tests Biological warfare tests apparently more widespread than once thought Professor Ulf Schmidt said there were secret trials on the Tube in 1964 ‘Mock’ chemical warfare tests on thousands of Britons from 1953 to 1964 By EMMA GLANFIELD FOR MAILONLINE Hundreds of thousands of …