Hollywood actress Carey Mulligan and Olympian and British sprinter Adam Gemili are taking part in the Run to the Beat half marathon.
The race powered by Nike+ is London's biggest half marathon, with 19,000 runners set to make their way around the 13.1 mile course.
It starts and finishes in Greenwich Park.
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A 15-year-old school boy has been stabbed 'five or six times' on his first day back at school in north London after the summer holidays.
Today's showers should clear overnight - and tomorrow will be more settled, but temperatures still feeling cool.
The pair have been poring over old maps and records in their bid to convince the council the warehouse should not be converted into flats.