RSPCA inspectors had to deal with a slippery customer when an uninvited guest arrived at a Thurrock freight firm.

"The staff weren't sure if the snake was dangerous or not but our staff at RSPCA Brighton Reptile Rescue, which is now looking after the 1ft-long snake, believe he's an Indian cat-eyed snake, or boiga, which is mildly venomous," said a spokesperson for the animal charity.

It is thought the reptile had travelled more than 4,700 miles in a lorry before being discovered in Purfleet, but despite that, it was in good health.

"Luckily, this snake survived a very long journey, despite no obvious signs that he had access to food, water or appropriate heat", said RSPCA collection officer David Eckworth.

Mr Eckworth added: "We get a number of calls every year to freight companies and holidaymakers returning from their travels when they find a secret stowaway stashed in their suitcase or hidden in their packages.

"We've been called to snakes, lizards, frogs, spiders and even scorpions!

"That's why we urge all lorry drivers and tourists to check their packages and bags before closing up to head home."