Your photo looks a lot like the Sun Disc photo from Tony James on daffseek.
Tom
Ian,
There is always a bit of confusion about these three that you mention. The one you photographed is Sun Disc, perhaps smaller than usual. Sun Disc has broad petals, overlapping in back. Normall it has one flower to the stem. Sundial does not have petals that are as broad, more of an oval shape and usually has two to the stem. Clare has the petals plane and the sepals strongly recurved and one to a stem. Hope it helps.
Your photo looks a lot like the Sun Disc photo from Tony James on daffseek.
Tom