Nick Clegg's comments that the Coalition had made a mistake by not spending enough on infrastructure came ahead of the latest growth figures, which will be announced today.
He said the figures will reveal what happened in the last three months of 2012 are likely to be "considerably weaker" than over the summer.
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The signs were encouraging to commuters going about the transport network the day after a terror attack in Westminster.
Faith leaders from across London say religious communities will "stand together" in the wake of the Westminster terror attack.
Pc Keith Palmer was among the three people killed yesterday in the Westminster terror attack.