The City of Westminster website is serialising the diary of a mid-nineteenth century wharf clerk named Nathaniel Bryceson.
Highlights include visits to the gallows to watch executions, the purchasing of cheese, and Bryceson’s meetings with his romantic interest Ann Fox (it is noted in the introduction that some of these episodes are written in “surprisingly explicit language”, though the nearest I’ve found so far is an entry from 2 January 1846 in which he ‘tastes her puddings’).