Suicide and social services in England

I love this movie but one thing bugs me re:Fiona's suicide attempt. If she had been hospitalized in the US hospital social services would have assessed her and her home situation. Marcus would also be interviewed to determine whether he had enough support and how the suicide attempt affected him (among other things). It is also possible that his father or another relative would have been called and granted temporary physical custody. There most certainly would be a follow-up. I realize this is a movie and the story probably wouldn't have unfolded with social services becoming involved but does anyone know about social work in Great Britain and how children of suicidal parents are assisted?