By Trevor Morris A backward-looking mindset is stopping London’s film industry from thriving, writes Trevor Morriss Although the set designs of Wonka and House of the Dragon are so fantastical you’d be forgiven for thinking they came from another world, both titles were in fact filmed right here in the UK. Thanks to a supportive tax regime, access to talent and demand for historic, often iconic filming locations (think Bridget Jones’s Borough Market apartment, or a certain fictional platform at a major London train station), Hollywood has long enjoyed a love affair with the UK – and this is no…