The Metropolitan Borough of Holborn was a metropolitan borough in the County of London between 1900 and 1965. The borough included most of Holborn (the parts outside the City of London) as well as Bloomsbury and St Giles.
In 1965 the borough amalgamated with the Metropolitan Borough of St Pancras and the Metropolitan Borough of Hampstead to form the new London Borough of Camden.
The London Borough of Camden (/ˈkæmdən/ ) is a borough in Inner London, England. Camden Town Hall, on Euston Road, lies 1.4 mi (2.3 km) north of Charing Cross. The borough was established on 1 April 1965 from the former metropolitan boroughs of Holborn, St Pancras and Hampstead.
To the south it shares with the City of Westminster parts of the West End, where it also borders the City of London. The cultural and commercial land uses in the south contrast with the bustling mixed-use districts such as Camden Town and Kentish Town in the centre and leafy residential areas around Hampstead Heath in the north. Well known attractions include The British Museum, The British Library, the famous views from Parliament Hill, the London Zoo, the BT Tower, the converted Roundhouse entertainment venue, and Camden Market. As of 2021 it has a population of 210,136. Politically, its local authority is Camden London Borough Council.