Boris Johnson has raised concerns about funding for the Crossrail project Mayor of London Boris Johnson is to stand for re-election in 2012, the BBC has learnt.
There had been speculation Mr Johnson might choose not to run in protest at the funding cuts being made by the coalition government.
He has raised concerns about the threat to the £17bn Crossrail project.
BBC political correspondent Norman Smith said Mr Johnson was expected to announce his decision later.
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