Arthur Simpson-Kent, the partner of former EastEnders actress Sian Blake who was murdered alongside her two young sons, has been filmed in police custody in Accra. br Mr Simpson-Kent was arrested at a coastal area in Ghana popular with tourists and had been cutting a coconut when armed police surrounded him. br The bodies of Sian Blake, 43, Zachary, eight, and Amon, four, were discovered in the garden of their London home.