Also known as an aurora, the Northern Lights appear around both poles, which pull electromagnetic energy through the atmosphere by the Earth's magnetic field. The recent solar flare, or Coronal Mass Ejection (CME), boosted the usual activity by plying it with additional electromagnetic radiation from 92 million miles away.
Pictures captured the rare display as it descended further south, showing a band of green light stretching across the horizon.
The solar flare hit the Earth on Friday, penetrating the skies above Sun-facing South America.
While the continent experienced its immediate effects via widespread radio outages, people couldn't watch the aurora.
The CME only augmented the Northern Lights enough to drag them further south from their usual perch around the Arctic Circle.
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People captured the light show in Scotland, but also as far south as Wales and the Midlands.
According to the Met Office, what people could see changes the further south they live.
The chances of catching the full display are much higher further north of Dundee and Loch Lomond.
Those living on the periphery south of the Scottish border are more likely to see the lights as a dull glow.
In Europe, people could also see the aurora from Iceland and Norway.
In the past, the solar spectacle has extended further south.
Where they end up depends on the strength of the CME that hits the Earth.
The Sun has five sunspot clusters that could eject electromagnetic particles at the planet, and each one comes with an assigned strength.
NASA slots CMEs into one of five categories from weakest to strongest.
The Geomagnetic storm (GS) strength scale wracks as follows:
The October 29 CME ranked as a G2, with auroras drifting to "mid-latitudes" seen yesterday.
The strongest G4 storms can create auroras as far south as Alabama in the US and Spain in Europe.