Overview
The City of London was a United Kingdom parliamentary constituency. It was a constituency of the House of Commons of the Parliament of England then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1950.
Boundaries and boundary changes
This borough constituency (or 'parliamentary borough/burgh') consisted of the City of London, which is at the very centre of Greater London. The only change by the Parliamentary Boundaries Act 1832 was to include The Temple.
Bounded south by the Thames, the City adjoins Westminster westward, enfranchised in 1545. In other directions a web of tiny liberties and parishes of diverse size adjoined from medieval times until the 20th century. Most of the population of Middlesex was beyond the city's boundaries. From the 17th century three of four new 'divisions' of Ossulstone Hundred adjoined the city reflecting their relative density – Holborn division and Finsbury division to the north and Tower division to the north-east and the east, all enfranchised in 1832.
London is first known to have been enfranchised and represented in Parliament in 1298. Because it was the most important city in England it received four seats in Parliament instead of the normal two for a constituency. Previous to 1298 from the middle of that century, the intermittent first parliaments, the area's households, officially, could turn to their Middlesex "two knights of the shire" – two members of the Commons – as to their interests in Parliament as the City formed part of the geographic county yet from early times wielded independent administration, its corporation.
From Wikipedia (CC BY-SA 4.0).