@Bolanghoy 13 January 2022 more from that month

The United Kingdom has a stockpile of approximately 200 nuclear weapons. 40 of these are warheads deployed on one of its four submarines, one of which is always on patrol under the ocean ready to deliver the UK nuclear weapons anywhere in the world in as little as a manner of minutes. The 2021 BBC TV series Vigil is set on board a fictional Vanguard-class submarine named HMS Vigil.