Hi again, There are some flowers on the French plants, which might help with identification:
Sorry I only have my mobile with me so the quality isn't ace... But mine have five petals, and Leslieray's seem to have more? Janet and Baja, If you need any other photos to help with the ID, let me know today if you can, as I fly back to England tomorrow. (Although I'll be back in a couple of weeks, and guess getting the pics moved in the DB isn't a matter of international urgency!)
Thank you for the information, which is always interesting!