The following sources provide advice on emotional support for those affected by an incident or bereavement:
British Red Cross
Tips for giving emotional support to those who have been through trauma
Supporting children after a frightening event
Newsround - Advice if you're upset by the news
Disaster Action provides support and information for the bereaved and survivors of major disasters that occur in the UK and overseas.
CRUSE Bereavement Care
Cruse Bereavement Care promotes the well-being of bereaved people.
Child Bereavement UK
Child Bereavement UK provides support and information to bereaved children and families.