London restaurants are being asked to donate their waste grease, oil and fat, to help run a special power station.
Thames Water is one of the architects of the plan.
As Martin Stew reports, it hopes it could also lead to restaurants pouring less fat away, which clogs up the capital's sewers:
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A man reportedly armed with several knives has been arrested in Whitehall on suspicion of planning a terror attack, police have said.
Metropolitan Police officer, Tom Harrison, has been crawling the course since the race began on Sunday morning.
The Old Bailey heard how Syed tried to get weapons online, including a bomb vest, and trawled the web to find a busy area launch an attack.