Construction is on schedule on the East London Line extension, Transport for London said this week.
Balfour Beatty and Carillion are building four new stations – at Dalston Junction (pictured), Shoreditch High Street, Haggerston and Hoxton – as well as the line itself as part of the £1 billion first phase of the extension.
Dalston station, in north east London, will be connected to Crystal Palace and West Croydon in the south of the city by 2010.
There is also scope to construct a high-rise building on top of the station and it has been strengthened below ground accordingly.
A further extension north to Highbury and Islington is scheduled for completion in 2011.