There are ten wheelchair accessible cabins on "Balmoral" and other ships ("Black Watch" "Boudicca" "Braemar") four and "Black Prince" two. More detailed information can be obtained from Fred. Olsen Cruise Lines and I strongly suggest you have a word with them.
Thank you, yes I will contact Fred Olsen for more information. So many cruisers seem to return to them we would like to give them a try.