The Dumfries campus of the U of Glasgow will provide something like a tiny LAC experience and they offer an Environmental Science and Sustainability degree:
https://www.gla.ac.uk/undergraduate/degrees/environmentalsciencesustainability/
It’s suppose to be in a beautiful part of Scotland.
Something similar would be the MacDonald campus of McGill.
Or you could just attend an actual LAC in the US and go on exchange in Europe.