Involvement in your healthcare and in the NHS - source of this right

1. You have the right to be involved in discussions and decisions about your healthcare, and to be given information to enable you to do this

The source of this right:
GP services are provided under arrangements made with primary care trusts. Those arrangements must comply with requirements set out in regulations made under the NHS Act 2006. In particular, the relevant regulations define the core "essential services" that providers must or may provide, as services for patients "delivered in the manner determined by the practice in discussion with the patient" (regulation 15 of the National Health Service (General Medical Services Contracts) Regulations 2004).
In addition, in relation to both GP and secondary care (e.g. hospital treatment), doctors registered with the General Medical Council have a duty to work in partnership with patients, which must include listening to patients and responding to their concerns and preferences, and giving patients the information they want or need in a way they can understand (refer to the General Medical Council’s Good Medical Practice).
Other health professionals are also governed by the standards set under the professional regulatory regime that applies to their profession.

2. You have the right to be involved, directly or through representatives, in the planning of healthcare services, the development and consideration of proposals for changes in the way those services are provided, and in decisions to be made affecting the operation of those services

The source of this right:
The legislation governing the NHS imposes a duty on NHS bodies to make arrangements with a view to securing such public involvement in relation to the services for which they are responsible (section 242 of the NHS Act 2006).