Unidentified little flower

I might possibly have been the most northerly person in Britain when I took this photo. We were on the headland north of Skaw (which boasts Britain's most northerly house - and very pretty it is too), which isn't actually the most northerly spot on Unst. The Hermaness headland, with its nature reserve, takes that particular prize. We went over that way later on, but the car park was so full on what might well be the best day of the summer here on Unst that we decided to leave walking out to Hermaness, to see the Muckle Flugga lighthouse, to another day (we've more or less decided this will be our holiday destination next year, so taken were we with Unst). Anyway, I was certainly the most northerly person lying on the ground amongst buttercups and other wildflowers taking a photo of a flower I don't recall seeing before, which was absolutely tiny and very pretty indeed. Can anyone in blipland identify it?

We're stealing some wifi at the Wind Dog Cafe back on Yell now to blip. We're not sure where it emanates from. Possibly from the cafe, or possibly from the ferry terminal itself. The ferries don't appear to charge once you paid to come north from Mainland to Yell. We've been over from Yell to Unst and back without paying and I deliberately offered the man on the last ferry some money which he turned down. Bizarre. One of the many good things about Shetland is that there is free wifi at ferry terminals, and it seems to be a pretty good signal.

Update - according to a local it's known locally as an eyebright. Lovely flower - part of the euphrasia family, apparently.