Ooh! Lots of comments - I'm being spoiled - glad you all seem to like it . I did want the reflection of the trees showing in the ice, which is why I cropped where I did - you could have had quite a bit more too. I look at it too and wonder whether it's quite level, but without a proper horizon to go on, who knows. I'm usually pretty good at getting the camera lined up, so I think in this instance it's the distant bank receding into the distance that's creating the 'not quite level' effect.
It was cold by the way. The weather had been like you see it for a week before I was up there and the ice was more than thick enough to walk on, especially to the right where the sun just never rose far enough above the fells to shine on it.