Can you Identify this Dahlia Please

Hi can anyone offer name of the Dahlia bottom right of the picture. It was purchased along with others as Bishop Of Dover. But according to my research Bishop of Dover is White.
The ones Top Left are Bishop of Auckland and they are correct. I have checked several pictures of Bishop Of " Dahlias" but cannot find anything with this colour flower. It has green stems and foliage  where as the B Of A has Browner steams and foliage.
Any ideas