NCOR has a particularly helpful site (http://www.ncor.org.uk/) which contains an extensive range of resources to support osteopaths, including some specific information on communicating risks and benefits: (http://www.ncor.org.uk/practitioners/practitioner-information-communicating-benefit-and-risk-in-osteopathy/). There is also information on research and evidence for osteopathy (http://www.ncor.org.uk/research/evidence-for-osteopathy/) which might also inform approaches to communication and consent.
The PILARS resource (http://www.ncor.org.uk/practitioners/pilars/) managed by NCOR is a site where osteopaths can anonymously share incidents related to osteopathic care, adverse events or other issues. This can be used for research and provides a learning resource for other osteopaths. It can be accessed via the o zone (under news and resources > research). The events described on the site are varied, but communication is an aspect which many have in common, and this could provide an effective learning tool for osteopaths.