Pub customers frequently threaten to leave bad TripAdvisor reviews over unfair complaints, a landlord has disclosed, as he accused a diner of trying to blackmail him unless he gave them a refund.

Piers Baker, 41, spoke of his anger after the diner claimed to have suffered food poisoning after eating at The Sun Inn, in Dedham, on the Essex-Suffolk border.

Mr Baker said he was called three days after a meal by a member of a party who ate lamb at the historic 15th century former coaching inn.

The pub owner said they told him they had fallen very ill and demanded their money back after the visit in November.