Currently over 155,000 people use Bond Street Tube station each day and that's expected to increase to more than 225,000 when Crossrail is finished.
London Underground's work will focus on the north side of Oxford Street in an attempt to increase capacity and create step free access to the station.
A new contract will be awarded by Crossrail in due course. This work will involve constructing two new ticket halls, excavations for two east-west platform tunnels with interconnecting additional access routes and escalator shafts. The western ticket hall at Davis Street (south of Oxford Street) will be built underground. The eastern ticket hall (an artist's impression pictured above) will be in Hanover Square.
The station will also get the benefit of improved pedestrian areas with new seating and lighting.
If you're worried this is going to stop people shopping in the West One centre, don't be. Work is due to start next year and the operations manager of the shopping centre said: "We will remain as we are. They will do the work around us. We are not closing."