Many competitors in the London Marathon are taking part to raise money for the good work of charities that have affected their lives personally, writes Tony Green.
Doug Paterson from Esher will be running the 26.2 mile route in memory of his brother James, who suddenly died in 2002 from a previously undetected heart condition. James was a 24-year-old fit young man training to be a navigator in the RAF.
This tragic loss was the initial reason why Doug decided to raise money and awareness of the Surrey-based charity Cardiac Risk in the Young (CRY).