Mullaco; based in UK, offer Halal Meat and chicken delivery to the Island. https://www.mullaco.com
Cimandis- Must specify halal meat/chicken before ordering (St. Saviour), orders required a day before collection to process Halal orders first thing in the morning. http://cimandis.com
Tesco Alliance (Sand Street, Broad Street, Halkett Street) only sells halal boneless chicken please always check the packaging for details.