"Lights, cameras... tariffs?" - This is a question that the film industry has been asking after an unexpected intervention by US President Donald Trump.

Trump wrote on his truth social platform last Sunday that foreign films were planned to be made with 100% tariffs as he tried to stop Hollywood deaths "very fast."

His threat is because studios are increasingly moving foreign works to places like the UK.

After that, the White House clarified that no "final decision" was made and that they were "exploring all options" to revitalize the American film industry.

But Trump’s advice alone has a shock wave on the industry as a whole – from Hollywood to Hertfordshire – so what might that mean in practice?

In 2014, Star Wars: Awakening was filmed at Pinewood Studios in Buckinghamshire, and Hollywood has been getting closer to the UK.

The British Film Academy said last year alone that 65% of UK production spending comes from five major U.S. film studios and three U.S. streaming giants - Netflix, Apple and Amazon. That totaled £1.37 billion (US$1.71 billion), with an increase of nearly 50% in 2023.

In Hollywood, by comparison, film and television production in Los Angeles has dropped by nearly 40% over the past decade.

reason? To a large extent Making movies in the UK is cheaper. This is thanks to generous tax incentives such as movie tax breaks, which provide a 25% tax refund – as well as lower labor costs and movie funding for movies concentrated.

As British actor Brian Cox told Time Radio on Tuesday: “Reality is a movie that is affordable.”

For Universal Studios' Jurassic World: Dominion, these incentives reportedly provided £8.91 million ($111.38 million) in savings.

In the U.S., tax incentives operate at the state level – Hollywood has relatively poor tax relief, which can provide 10% not only compared to the UK, but also other states such as New York and Georgia.

Fixing this is by no means easy. Trump has appointed 86-year-old Jon Voight as Hollywood's special ambassador and meets him before giving up the lightweight detailed proposal.

But it is not clear how tariffs solve the internal tax problems in the United States. One possible solution proposed by Voight is a federal tax incentive that can reflect the UK.

Jeremy Fuster, a film journalist at the Packaging Box, told the BBC that in the current highly charged climate, Republicans “support federal tax incentives, which are easily portrayed as handouts that “wake Hollywood”.

If the taxation continues to move forward, what impact will it have on the movie audience?

As with any other benefit received, the cost will be passed to the audience through ticket prices, on-demand growth or subscription rates through ticket prices.

How exactly will this show "thing that no one knows".

It's not all about the money, because while U.S. production can benefit some parts of the industry, some projects still need to be filmed abroad. "Amazon will not completely attribute the next James Bond to the United States," Fuster noted.

Culture Minister Sir Chris Bryant said the British government was having an active discussion with the top of the U.S. government on the “very smooth situation” situation.

With all this in mind, do you know what movies have been made in the UK in recent years? BBC News has seen some of the following - they may be closer to home than you think.

Warner Bros. of Hertfordshire left the studio and was known for making the Harry Potter Movie and has been used as a set for numerous Hollywood blockbusters, including Barbie, Mickey 17, Venom: The Last Dance and Betley Juggis Betley Jump.

The nearby Sky Studios Elstree of Borehamwood welcomed its first work, Wicked, into Oz's magical world in 2023.

Apart from Hertfordshire, cities like Glasgow have long been used as a shooting hub for Hollywood movies.

The opening scenes of Brad Pitt's zombie thriller World War I may look like Philadelphia, but the film was actually shot in George Square in the Scottish city.

In November, the city turned into a dystopian New York as Glen Powell was spotted as filming the upcoming thriller The Running Man.

It’s not just dystopian films shot in Glasgow – in 2021, the cutting edges of Stars and Stripes, Colored Banners and vintage storefronts decorate the streets and the Dial of Destiny in the heart of Glasgow’s Indiana Jones.

The city was used for parade scenes, and as Apollo astronauts returned home, it appeared to occupy New York in the 1960s.

The latest Indiana Jones film is also filmed in North England, with Bamburgh Castle in Northumberland being used in the opening scene.

The castle doubled in Nazi Germany in 1944.

Other scenes are shot along the North York Moors Railway in Grosmont on the Leadingfoot viaduct on the Tweed River near Melrose, the Scottish border.

In 2022, Batman created the New York-based city of Gotham using the Glasgow Cathedral, Cemetery and Bridge of Sighs.

Director Matt Reeves said in 2022 that shooting at the BBC said it was important to shoot at a location with "beautiful Gothic architecture".

"I wish it was like a Gothic American city, but you've never been there," he said. "So we went to Glasgow and honestly, it was so beautiful."

"Just like Gotham looks great, Gotham would think of all the cities in the world, Glasgow is Gotham?"

The Central St. Martins School of Art in London is also used as a building in Gotham City, and some parts of Liverpool are also used as buildings.

A keen fan will find that the Gotham City Police Department is actually the bell tower of the Liver Building, despite the giant liver bird being squirted out.

Spider-Man spin-off Morbius filmed in Manchester's North Side, and in 2010, the city became Captain America in Brooklyn in the 1940s: the first Avenger starring Chris Evans.

Liverpool's early 20th-century architecture also made it a popular stand-in for New York's older skyscrapers. Liverpool was transformed into New York in the 1920s to find the wonderful beasts and where to find them, which led Eddie Redmayne to search for the magical beasts he escaped in the city.

Disney's recent live-action Snow White movie is almost entirely filmed in the UK, with Pinewood Studios being used in many indoor scenes and scenes.

A quarry in the Lake District, beaches in Pembrokeshire, Wales and the nature reserve in Burnham are all used as shooting sites.

Netflix's Snow White and Tom Hardy's new thriller Netflix filmed an American city in Wales, who wanted to be named.

The film's Welsh director Gareth Evans said it was "challenging" to recreate an American city in South Wales, but he wanted to bring more work to the region.

Swansea’s Brangwyn Hall doubled, as the appearance of a fictional city police station, Cardiff’s Bute Street turned into an American Avenue with 30 cm (12 inches) of fake snow used in one of Havoc’s night scenes.

Other recent Hollywood blockbusters in the UK (called Main Photography - Main Photography) include:

• Jurassic World Rebirth (2025)
• Task: Impossible - Final Estimation (2025)
• Back to Action (2025)
• A quiet place: Day 1 (2024)
• Sonic Hedgehog 3 (2024)
• Aquaman and the Lost Kingdom (2023)