I am currently completing the paperwork for my Cambridge GP registration and there is a section asking for my NHS number. Please can you advise because I do not have one?

Your NHS number is your National Unique Patient Identifier, used to help healthcare staff and service providers match you to your health records. You are allocated one at birth or when you register with a UK General Practitioner / GP (Family Doctor). If you have not registered with UK GP before, you will not have one so leave this section blank on the form.