Yes, of both, although in much smaller numbers than for RHD. LHD Rover 75 V8 is extremely rare. Quite a few LHD owners on this forum, myself included. I have a LHD ZT260, one of about ten in France (plus one 75 Rover V8, I believe). A few other forum members and cars in Germany, the Netherlands, Switzerland and Sweden. The forum has been a great support to all of us with such rare models and fewer XPart dealers in our countries.
If you are thinking of buying, be warned that prices in continental Europe are much higher than in the UK for RHD cars. The German site Mobile DOT de usually has a few for sale.
Cheers,
Julian.