Camryn Melby recommends being mindful of where you toss your magnet if you decide to fish anywhere that has metal, like a bridge, do not trespass, and research the relevant rules and regulations in your area.

A magnet fisher said he felt "amazing" after pulling his 150th trolley from rivers in a city centre since starting the hobby four years ago. Lewis Bright has attracted almost 100,000 followers on Instagram, where he documents his finds from the murky depths in Chelmsford.