I don't do this landscape stuff (it's to slow) lol. Sarah, you are right about the foreground, due to using a long lens there is much compression making the scene look more compressed than it is. I was up the mountain with the dogs and camera, I turned around and this scene was before me, no time to get a better composition as the clouds were moving quite quickly and the light on Pen Y Fan was changing just as fast, plus it was getting dark.
Andy, I take on board your comment and thank you for taking the time to look. If we get another reshoot I might just go back and recompose the shot.
Allan