Almost three weeks ago the massive 'port' explosion which devastated a large swathe of the Lebanese capital Beirut sent shock waves through the world.

But could such a tragedy ever happen here?

The SS Richard Montgomery ran aground and sank just off Sheerness back in 1944.

And as Channel 4's News chief correspondent Alex Thomson has been finding out – the ship’s wreck still contains thousands of tons of explosive ordinance.

For more see the footage on the story here.