Airports of London cannot be expanded due to the docks on either side. It is also the only airport serving London which does not operate at night. A light rail service from London City Airport DLR station, which adjoins the terminal building of London City Airport, links it to the financial district of the City of London at Bank and Monument stations, which offer interchanges with London Underground. Located in the London Borough of Hillingdon, Heathrow is by far the largest of London's airports and considered the main gateway into the United Kingdom for non-European visitors. Heathrow has four terminals and two parallel
City of London (elections to the Parliament of England) London election thus took place in a single day. If the Recorder resigned during a Parliament or a Citizen was elected an Alderman, he was disqualified and the new Recorder or another Citizen (as the case might require) was elected. At some point after 1603 the City adopted a more normal system for nominations and elections. The two London Sheriffs appointed a day for candidates nominations to be submitted, at a meeting in the Guildhall. If there were more than four candidates a poll was held at a later date which usually extended for several weeks. Although it was no