My ID guide is rubbish, what could this Bird be...?

I saw it in my Garden a few times throughout the day, I managed to get a couple, or three photos of it.

It was alone, and eating heartily from my new bird table and the ground, sparrows eventually chased it away...

It has a slightly mottled breast, sort of black band from beak straight down the throat.  When it flew up it had those white banded tail feathers, bit like a chaffinch tail, like a fan.

Also had a slight 'tail bobbing' action. I have never see one like it before, garden or otherwise.

Ive blown up the pics.....

 

 Any idea..?