Could London have a new underground line by 2030? And does it need it?
Plans for a diagonal route from the north east to the south west went on show today, with the catchy title of Crossrail 2.
Our Political Correspondent Simon Harris has more.
More top news
The Foreign Secretary has defended his decision to miss a crucial Commons vote on Heathrow expansion.
The 15-year-old from Grays in Essex was killed after a fight started at a birthday party.
Launching on 27 June, the exhibition will include works from renowned artists including Sarah Lucas, Thomas J Price and Sean Scully.