Unbuilt London: The Central Metropolitan Railway

Long before the Northern line could carry people from St Pancras to the Embankment, plans were made for a sub-surface railway in the same style as the Metropolitan line along a similar route.
This was the Central Metropolitan Railway, planned in 1881 and blocked by Parliament in 1882 — so it didn’t last long.
In 1881, the Central Metropolitan Railway proposed a cut-and-cover line running from Parliament Square to St Pancras/King’s Cross. At the southern end, the line was to run