Eas a’ Chual Aluinn is a 658ft waterfall said to be the highest in the UK, which I managed to see from a boat tour in Kylesku in the Highlands of Scotland.
The ‘Ardvreck Castle Waterfall’ is an obscure 20-30ft waterfall emptying into Loch Assynt almost right by the historic castle ruins in Sutherland, Scotland.
Smoo Cave is a cave with a waterfall near the top end of Scotland by the town of Durness. The waterfall was inaccessible during our visit due to storm damage.
The Clashnessie Waterfall is a 15m falls that we reached via a deceptively long (and dangerous) out-and-back detour from the Loch Assynt vicinity in Scotland.