THOSE up early enough this morning were met with an unusual sight.

Rather than grey or blue skies Oxfordshire had a distinctly purple-tinge.

Amy Oliver shared this picture after being baffled by the phenomenon.

The Oxford Times:

Picture by: Amy Oliver 

She said: "I went and opened the blinds in the office this morning. Couldn’t believe my eyes when I saw that the sky was purple."

The Oxford Times:

Picture by: Pete Grant

Tony Brett sent us this tweet.

The Oxford Times:

The Oxford Times:

Pictures - Tony Brett

Oxford's colleges were also bathed in the strange glow. Here's St Cross College, as taken by The College Chef and shared on Twitter.

The Oxford Times:

And Blackbird Leys took on a new hue as people headed out to work this morning.

The Oxford Times:

Picture - Donna Johnston

The Oxford Times:

Picture. Claire Quy

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