This is the moment a teenager unwittingly discovered a live WW2 bomb packed with 250kg of explosives on a riverbed - before crashing his underwater drone into it.

Cameron Makewell, 14, was driving his underwater drone in the popular River Ure, in Yorkshire, when he came across a strange cylindrical object in the murky low-visibility water.

The young explorer believed it to be a gas canister until his dad, Adam Makwell, 47, told him that he had stumbled across a WW2 bomb - at the time they didn't know was live.