The Coroner's office will be able to provide information on the main local and national voluntary bodies, support groups and faith groups which help people who have been bereaved, including as a result of particular types of incidents or circumstances, or specific medical conditions. The NHS Choices website also contains details of support organisations:
You may find the publication Help is at Hand useful. This is a guide for people bereaved by suicide and other sudden, traumatic death and is available on the NHS Choices website