The Secretary of State for Transport Lord Adonis has approved a £695 million upgrade of Victoria Underground station.
The decision comes eight months after a three-month public inquiry, which ended in January this year.
When complete, the scheme will increase the size of the station by about 50 per cent with a new ticket hall, lifts and additional escalators to ease congestion, and step-free access from street level to all platforms and for interchange.
Mayor of London Boris Johnson said: “For many people, Victoria Station is the gateway to central London, and for a long time it has been creaking under pressure from the sheer number who use it every day.
“This key upgrade will transform the experience for those using the station - making life easier and more convenient.
“It exemplifies our commitment to invest in our future to ensure our infrastructure can meet the needs of the 21st century.”
London Underground managing director Richard Parry said: ‘Victoria Underground stations is one of the busiest stations in the country with around 80 million people passing through its gates every year.
“This number is set to grow especially when we increase capacity on the Victoria, District and Circle lines, and these works will ensure the station can handle the additional volume of customers.”