London Marathon 2024: The reason why Dave Lock is running for a 25th time

Dave Lock is running his 25th London Marathon for the Samaritans this year, a cause that has taken on further significance for him after the death of his brother, Steven, in 2023.

Warning: This video contains references to suicide and mental health issues.

READ MORE: 'Samaritans Running Telephone' Dave Lock set for 25th run

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