Grayson and Debs had a number of scenes together in Noti. Miss Fellows is not actually in the scene but I love it when Hannah (Debs' character) is chopping up the fish for dinner and is venting just a wee bit about Miss Fellows and chops the head of the fish off with a big WHACK. Fabulous moment--and I write that as a vegetarian for the last 26 years.
I also loved Debs in Casino Royale, and she was wonderful opposite Niven again in Eye of the Devil (a hauntingly shot 1966 film that deserves to be more widely known--same themes as The Wicker Man but much more understated and quietly creepy).
She had a flair for memoir as well, as her diaries about the shooting of Noti, published in one of the glossy magazines in 1963, show brilliantly.
G.