The project start for the first studies on the second dreadnought class of the Royal Navy began in May 2011. On July 18, 2016, Parliament approved the development and construction of the four-boat class. The first steel cuts were made a few months later on October 5th of that year.
The compartment with the nuclear missile silos is identical to the Columbia class of the United States Navy , the so-called Common Missile Compartment (CMC). However, the compartment on the British boats only contains eight missile silos compared to 16 on the approximately 17 m longer Columbia , so that a boat can carry a total of 40 nuclear warheads.