Three London friends are preparing to run 39 marathons in just 30 days, across nine countries in eastern Europe, to help the fight against child trafficking.
Rob Martineau, Tom Stancliffe and Guy Hacking told Nina Hossain why they were taking up the challenge.
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Higher temperatures are expected over the next few days and parts of the South East could reach 30C.
After being locked up in a police cell volunteers from a scheme called Divert do their best to guide inmates away from a life of crime.
The space will be a centre for 18 to 30-year-olds who are starting their creative careers.