History of the London Underground to determine the cause. Following the incident, a system that stops a train automatically if the driver fails to brake was introduced at dead-ends on the London Underground. The Northern City Line was connected to British Rail tracks at Finsbury Park in the 1970s. The last tube train ran in October 1975, and British Rail services began in 1976. In 1977, the Piccadilly line was extended from Hounslow to Heathrow Airport, and in 1986 a platform serving Terminal 4 opened on a loop line. The Fleet line through central London was first proposed in 1965, taking over the Bakerloo line's
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