Mandarin that is not a mandarin

Mandarin that is not a mandarin

Observation - Mandarin that is not a mandarin - UK and Ireland. Description: I first thought it was a mandarin but I looked at British bird books and European bird books and my photo and saw that the Duck in my photo doesn't have a speckled breast which would be visible when the bird was in the water. It's eye line is also below t

I first thought it was a mandarin but I looked at British bird books and European bird books and my photo and saw that the Duck in my photo doesn't have a speckled breast which would be visible when the bird was in the water. It's eye line is also below the eye not across the eye.
I also considered Wood duck but that also has a speckled breast. Any idea what it is??