Tried that, but you can't register as an individual, only as an organisation. I apparently registered and activated an account, but that takes you to a form to fill in which specifies who can and can't be a stakeholder: "NICE does not have the resources to respond to comments from a large number of individuals or local organisations. Individuals cannot register as stakeholders but NICE encourages anyone with an interest in the topic to express their views to a registered stakeholder listed on the guideline page* on the NICE website."