Thanks all.
She is a Togg/AN cross although her colouring is completely Togg, she does have big floppy ears that stick out half way between a Togg and an AN. The father is a cross breed as well, apparently mainly saanen but my neighbour who owns him wasn't sure of the rest (and other than being mainly white he doesn't look much like a saanen to me!). He has a tiny patch of black on his head so was surprised at how colourful the kids turned out.
They are so much fun and hopefully some of the spots will come through on daughters next year