It seems that the final MG Rover test and development cars have been sent to the crusher by SAIC Motor after being allowed to languish at Longbridge for over five years.
https://www.aronline.co.uk/news/mg-news/mg-rover/the-end-of-the-road/
SAIC Motor : MGR’s surviving test cars are finally sent to the crusher – AROnline
MG ZT info mods and maintenance 