Royal Mint Court the 1960s little of the original mint remained apart from the Smirke building and gatehouses. The Royal Mint was based at the site until 1967, when it began moving to its current site in Llantrisant, Wales. Minting ceased at Royal Mint Court in 1975. Two new office buildings were constructed on the site in the 1980s. Designed by Sheppard Robson, they were subsequently known as Murray House and Dexter House. This brought the site's total office space to 460,000 square feet. After the Mint vacated the Murray House building on the site it was used as commercial offices by Barclays
Royal Mint mint were ceremoniously delivered to the Constable of the Tower. Facing the front of the site stood the Johnson Smirke Building whose namesake comes from its designer James Johnson and builder Robert Smirke. This building was flanked on both sides by gatehouses behind which another building housed the mint's new machinery. A number of other smaller buildings were also erected which housed mint officers and staff members. The entire site was protected by a boundary wall which was patrolled by the Royal Mint's military guard. By 1856, the mint was beginning to prove inefficient, suffering from irregularities in minted coins'