Here are two online resources which you might useful:

This is available on the Higer Education Academy website.  A network of people with a shared interest in patient & public involvement in higher education, who aim to develop a critical alliance of people with lived experiences, students and academics for the purpose of enhancing improving practitioner education, patient experience and associated research in health and social care.

The Royal College of Psychiatrists

Has published online resouces regarding involving carers in forensic mental health settings.  Including video presentations from their recent conference on: What is Carer Involvement and What makes it difficult to involve carers? This workshop created a place to pool good practice in involving carers into Forensic Services. Importantly it became a trouble-shooting space to explore the challenges in involving carers in Forensic Services and the Quality Network.

These links can also be found under resources.