A thirteenth-century customs book from the Cathedral Priory of St Andrew full of vivid details not just of the lives of the monks but also offering valuable insight into the servants of the priory.

One of the most important of all medieval manuscripts, it is actually two books in one compiled in the early 1120s, containing a compilation of early English laws dating as far back as the year 600 and a collection of charters relating to the Cathedral Priory of St Andrew, Rochester.