It was former London General Plaxton bodied Volvo B7TL W524WGH which was sold to the Ensign bus dealership in January 2013. The following month it was acquired by Southern Film Services of Farnham in Surrey.
It appears that it is still owned by them as their website defines the vehicle as a 'dining /
|W524WGH at Norwich Station this morning with a First Norwich Blue Line Volvo B9|
My thanks to Liam for the information and photos.