Mr Jopson will cover around 2,500 miles (4,023 km) in 50 days while raising money for Prostate Cancer UK and the Queenscourt Hospice, where his uncle received end-of-life care - watch his video update on the challenge.
A gunman has been jailed for nearly seven years after police recovered two shotguns from his home - despite saying he'd never seen a gun in his life.
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