I think the French already do something like this. Films are to be assessed for their “Britishness” to see if they qualify for tax breaks.

To qualify as British, and be eligible for tax breaks, film projects must score enough points across three categories: cultural hubs; cultural practitioners; and cultural content.

“Cultural hubs” determines whether the production and filming will take place in the UK; to qualify in the “cultural practitioners” category, a project will have to show that its cast, crew and/or producers come from within the European Economic Area; and “cultural content” looks at whether the film is set in the UK and has British characters.

Technorati tag: Film