A man who found the skin of an enormous Boa Constrictor on the banks of the Thames in Barnes has made another ominous discovery.

Mudlark, Jason Sandy, has photographed what appears to be the head of a mysterious sea creature poking out of the river.

He’s asked his 93,000 Instagram followers if they have any ideas what the object could be.

Guesses so far range from a python and catfish to the Loch Ness Monster of the River Thames.