Malcolm Robertson Tribute

Malcolm Robertson, from East Sussex, and his wife Linda were attacked off Satun, the Foreign Office confirmed.

Thai Police have arrested three Burmese men in connection with the incident.

Police Captain Suparak Pongkarnjana said Mr Robertson shouted for help but the men "slit his throat with a knife and hit him".

So far no body has been found but it is understood the 64-year-old was killed on Monday while sailing with his wife near Koh Dong, an island about 45 miles west of Satun.