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
Reactions to the 2005 London bombings though with several further security alerts and a reduced service on the Underground. The first indication of the attacks came at 9:15 a.m., when Sky News, during its "Sunrise" breakfast show, flashed a report of an explosion at Liverpool Street Station in the City of London. The main UK TV networks (BBC One and ITV) dropped programming and carried news solidly within 30 minutes of the first reports. Initially, the BBC's response was slow. At 9:20 a.m., a graphic appeared on BBC News 24 reporting an explosion in the City of London, only for it to be removed and go