Why has my avatar photo loaded sideways?

Hi, My avatar photo only loads sideways even though the original is the right way up. Any suggestions please?

 

It's peculiar, but I know sometimes computers "work out" what way up a photo goes from the metadata on the photo (ie, what way you were holding the camera when the photo was taken is stored in the photo file and the computer reads that before displaying it), so it might be that the photo isn't actually the right way up! If you want me to have a look at it, shout, and I'll send you my email address so you can send it to me to fix

 

Thank you, Fiona, I'll try flipping it on my laptop and see if that works. X

 

Oh, I've just noticed it's done itself