With the release of the nuclear submarine TV series, Vigil, Dr Nick Ritchie, Senior Lecturer at the University of York and the UK’s leading expert on Trident, joins James for this episode of our sibling podcast Warfare. Nick gives us a step-by-step history on the multilayered missile system, which is said to act as deterrence. Earlier this year, Boris Johnson’s government agreed to increase the amount of nuclear weapons in the UK by around 40%, and it’s still unknown where the warheads would be stored if Scotland secure a second referendum and vote to leave the union. Hear why the UK first got nuclear weapons, whether they actually work as a deterrence, and find out the many challenges which lie ahead.

Nick’s book, A Nuclear Weapons-Free World?: Britain, Trident and the Challenges Ahead, is available now.