Food businesses have been warned to take allergies seriously after a restaurateur was imprisoned for six years for killing a customer by selling him a curry containing peanuts.

In a legal first, Mohammed Zaman, 53, was convicted of manslaughter after 38-year-old Paul Wilson suffered a fatal allergic reaction to the peanuts.

Paul Wilson's parents Margaret and Keith said he loved curry but was always clear with staff about his allergy, asking for his meals not to contain any peanuts

Mr Wilson, who was meticulous about his condition, had asked for a chicken tikka masala with "no nuts" but his takeaway curry from the Indian Garden in Easingwold, North Yorkshire, was cooked with a groundnut mix containing peanuts.

Police and prosecutors said the case sent a very clear message to the catering industry.