Campaigners fighting fire station closures claim to have unearthed a major flaw in the plans.
New figures reveal that, in 40 neighbourhoods across the capital, firefighters will reach emergencies outside the official response time.
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If approved the increase would trigger a county-wide referendum.
Martin Gallagher was in Euston station when he saw Grace Georgina crying - she had lost her ticket and was unable to get home to Liverpool.
Always bound to raise a few eyebrows, the fourth plinth in Trafalgar square is one of the capital's most famous places to display artwork.