I use
http://www.kmscentre.co.uk .Kenny is the owner and is brilliant! they are not Rover specialists but he has done a wonderful job looking after mine over the last 5 or 6 years.
prices are very reasonable and he will phone to discuss any problems that arise. Situated just at the side of Wythenshawe hospital. i usually buy my parts from DMGRS and he fits them for me no mither.