Probably not the Aurora Borealis

From time to time, the Aurora Borealis can be visible from the UK, and the Twitter accounts AuroraWatch UK and BGS Aurora Alert can be useful in getting warning of this. It is relatively rare that it is visible as far south as Cornwall, but I did have a look at around 11pm BST on 8th October and took some not very convincing pictures of the northern sky, where there was mist illuminated by artificial lights.

More pictures at my Google+ album.