The U.K. government has provided provisional approval to the creation of a second runway at Gatwick Airport outside London.

London Gatwick Airport expansion is expected to get a green light today which would boost its capacity by 30 million more passengers a year. The UK’s second-biggest airport is expected to welcome a decision from the Transport Secretary Heidi Alexander this morning to bring its emergency runway into permanent use.

Transport Secretary Heidi Alexander has “set out a path to approving” Gatwick Airport’s expansion project, a Government source has said.This comes after the Planning Inspectorate initially rejected the West Sussex airport’s application to bring its emergency runway into routine use.

Britain is inclined to approve the expansion of its second largest airport Gatwick, the government said on Thursday, over objections from environmentalists and during a push on infrastructure to drive economic growth.