Desert Wheatear ?

I reckon I know an unusual bird when I see one and this morning in our garden I spied this one. It was smaller than a blackbird but bigger than a robin. I think, after perusing Bird ID websites, that it might be a Desert Wheatear. If so it is a very rare sighting of a bird that is WAY off course. So any birders out there can confirm my ID - or tell me I am completely wrong!

Addendum; Later ID'd as a Female Northern Wheatear !