Proper noun
The hill on which St. Paul’s Cathedral in London is built.
A street in the City of London that runs from St Paul's Churchyard, joining Fleet Street at Ludgate Circus. There was once a railway station named Ludgate Hill.
Source: en.wiktionary.orgOrdnance Survey data Two small but notable hills are within the historic core, Ludgate Hill to the west and Cornhill to the east. Source: Internet