AquaFonte lists 3 verified thermal springs in United Kingdom, each with its own page: temperature, minerals, treatments, and directions.
Water types found
ChlorinatedSulphurousFerruginousSaunaRuralTraditional
Springs
Horsehouse Sauna at Inshriach
Cairngorms, Highland · 80°C
A wood-fired sauna in a converted Victorian horsehouse at Inshriach Estate in the Cairngorms National Park — followed by a cold plunge in the River Feshie, one of Scotland's most pristine Highland rivers.
Roman Baths & Thermae
Somerset, England · 45°C
Britain's only naturally hot spring — feeding the Roman Baths for 2,000 years, now also the modern Thermae Bath Spa.
Strathpeffer Spa
Scottish Highlands · 12°C
A Victorian spa village in the Scottish Highlands, whose sulphurous and chalybeate springs drew fashionable society from across Britain and Europe in the 19th century.