So not dependent on Brexit then
You’re right, it was nothing to do with Brexit. Driven by US studios looking for additional UK production space - there has been a lack of UK sites available:
Britain has in recent years faced a production space crunch, leading to plans for new studio complexes, including one from Comcast/NBCUniversal/Sky, and expansion plans for existing facilities
www.hollywoodreporter.com/news/atlantas-blackhall-studios-develop-studio-complex-west-london-1279747
... the new Global Talent Visa has been introduced because of Brexit
This replaces the current Exceptional Talent visa and is split into Exceptional Talent (as now) for current world leaders and Exceptional Promise for those who have the potential to become world leaders.
But ...
Those who work in the film, television, animation, post production and visual effects industries can also apply for Exceptional Talent. These applications are assessed by the Producers' Alliance for Film and Television (PACT) on our behalf. However, you cannot apply for Exceptional Promise if you work in these fields.
www.artscouncil.org.uk/global-talent-visa
Oops.
Good to see such joined up thinking between those pillars of intellect, Lis Truss and Priti Patel.