Inside Britain’s top secret research laboratory - BBC News
The BBC was given access inside Porton Down, where some of the world's deadliest viruses are researched.
Welcome to Britain’s top secret laboratory where defences against chemical weapons, ballistics, explosives and cyber-security are researched.

The BBC was given access inside Porton Down to see what the highly secretive facility was like and, for the first time ever, entered a cleansed version of a level four laboratory. This level is where the Defence Science and Technology Laboratory team analyse some of the world’s deadliest viruses - Ebola and Marburg.

Frank Gardner, the BBC’s security correspondent, went to meet one of the scientists working there.

Filmed and produced by Samantha Everett and Imogen Anderson