When the UK’s offensive chemical and biological weapons programmes were terminated in the 1950s, work at the high-security military research centre in Porton Down, Wiltshire switched to defensive strategies. These included developing chemicals for use in riot control and countermeasures to the evolving threat of chemical and biological weapons.
Before being tested on military personnel, potential riot control compounds had to go through an informal preliminary screening. According to a 2006 history of Porton Down published by the Ministry of Defence (MoD), this would sometimes involve laboratory staff “cautiously sniffing” new compounds in order to “eliminate the less promising ones”.
Today’s scientists working inside the Defence Science and Technology Laboratory (DSTL), which is headquartered at Porton Down, won’t be doing any sniff tests. But according to an anonymous whistleblower, Porton’s CEO, Paul Hollinshead, has warned that the laboratory needs to improve its health and safety record, or risk losing its operating licence.