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
Airports of London - the airport has a single runway, which is very short. As a result, no large aircraft are permitted to use the airport, which initially prevented all long-haul flights. However, since 2009, British Airways has operated a flight to New York JFK, via Shannon, using an Airbus A318. The largest aircraft currently handled at the airport is the Airbus A220-100, with the first commercial flight completed in August 2017 from Zurich. Located only four miles from Canary Wharf, London City Airport is often used by business travellers, with many flights serving destinations across the UK and northern Europe. The airport