Glasgow is Scotland's biggest city and its most underrated filming location. Victorian architecture, industrial grit, art deco cinemas, brutalist towers, and green spaces that don't feel like they belong in a city of 600,000 people. It's doubled for everywhere from Philadelphia to Moscow on screen, most famously for the Indiana Jones, Fast & Furious and Captain America productions that have used the city centre as a stand-in for the United States.
The city has a deep crew base, well-stocked equipment houses, and a council that's genuinely production-friendly. Glasgow Film Office (run by Glasgow City Council) actively supports incoming productions, holds a free location library of council-owned buildings, and can fast-track permits when a brief is reasonable and properly scoped. For most international productions, Glasgow is faster to permit and cheaper to base in than Edinburgh.
What Glasgow really gives you that the rest of Scotland doesn't is variety inside a single postcode. You can move a unit from a Victorian sandstone tenement to a brutalist subway station to a Clyde-side former shipyard in twenty minutes. For productions where every set-up needs to feel like a different city, that compression is the whole point.