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) Protectorate Parliaments, before reverting to four for the Third Protectorate Parliament. "Key to parties: T Tory; W Whig." "Dates of general and by-elections from 1660 (excluding some general elections at which no new MP was returned)." City of London (elections to the Parliament of England) The City of London was a Parliamentary constituency of the Parliament of England until 1707. This borough constituency consisted of the City of London, which was the historic core of the modern Greater London. In the twenty-first century, the City forms part of the London Region of England. The southern boundary of the City is