Work on widening the northern platform is on schedule and is expected to be completed in time for the opening of the new Westfield London in October.
A spokeswoman for Westfield, which is carrying out the project, said that ‘work is underway and progressing well’.
It had been revealed last November that the opening of the new station would be delayed when it emerged the platform was 18 inches too narrow for the number of people expected to use the station.
Shepherds Bush Central Line underground station closed for a massive overhaul in February, with no sign of the new train station as an alternative link.
Westfield have been moving a huge retaining wall and widening the northbound platform by just over a foot so that it will more than meet rail requirements.
The new overground station is part of a package of transport improvements to the area which includes a new underground station – called Wood Lane – on the Hammersmith & City Line, a new bus depot and complete refurbishment of the Shepherds Bush Central Line tube station.
Cllr Botterill said: “The regeneration of Shepherds Bush, with the White City opportunity area and the Westfield centre, is central to our plans in creating a borough of opportunity.
“The new transport links, including this station, will have a positive impact for everyone and will reinvigorate this part west London.”