Previous recipients include Jeremy Thomas, Christine Vachon and David Linde.
Long-time Locarno Pro collaborator Duffner was announced on Monday as the new head of the industry programme.
Screen speaks to producers who have been through the industry platform.
Heritage Online connects rights holders of classics with online content platforms.
Platform to launch in Australia on August 11.
The live panel featuring Tim Bevan, Iain Canning and Alison Owen will take place online at 9:30am BST on May 19.
Projects are by UK-based filmmakers with non-English language scripts.
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