Thank you for your question
My name is Clare
I shall do my best to help you but I need some further informtaion first
When did he last see the children
Sorry - I meant when did he last physically see the grandchildren?
I am so very very sorry but since his children are adults there is no action that can be taken.
He has no automatic right to have contact with his grandchildren.
I cannot begin to imagine how awful this is for you - but there is no legal action that can be taken
All you can do is continue to be the nice reasonable person that you are sending appropriate cards and letters updating them.
It is very possible that they will realise that he is indeed ill and come round in time
I am so sorry that the law cannot help you on this
I am sorry but there is no such law here in the UK
I hope all goes as well as it can