This guidance has been prepared by expert reference groups supported by NHS England, and led by the National Clinical Director for End of Life Care, in response to requests by commissioners, service providers and clinicians for a clear description of what should be provided in terms of specialist level palliative care for people with progressive, life-limiting illness who have complex needs, and/or those whose usual care teams require the expert advice, guidance and support of those with specialist knowledge and skills in palliative care.