[arethuza]

There is Trees for Life in Scotland:

https://treesforlife.org.uk/

Edit: Most of the Scottish Highlands are a particularly bizarre landscape that people generally think of as natural but is really rather artificial as deer, lacking natural predators and being popular for hunting, tend to eat young trees.

[mrec]

Bit like Dartmoor - looks spectacularly wild and romantic, but used to be forested until Bronze Age farmers cleared it for agriculture and the soil turned acidic.

[desas]

The Lakes and the Peaks are in the same boat too, probably the other national parks.

[radicalbyte]

It would be fantastic if it could be re-planted with trees.