Just saw this!
My father suffers from Alzheimer's so I have been going to support groups to help deal with that, and this short film was shown at a meeting I was recently at. It is really good: quite sweet, or perhaps I should say bittersweet. It even has elements of a good Twilight Zone episode. Amazing that a big name actor like John Hurt made time to do this but perhaps he has some personal reasons for doing so.
Sadly, the moderator said someone had sent him the film and that he had done some checking and found it was essentially not available. It bore a credit that said Spiritual Cinema so maybe that would help someone try to track it down, but it would be worth the effort for anyone who wants to see a dementia-themed short.