Can I take part in just the interview part?

Yes. It is entirely up to you which parts of the survey you complete. You can do all or some of it, and if there are any questions in any part of the survey that you would prefer not to answer, you can skip these.  After the interview, we may send you reminders about completing the paper questionnaire, online survey (if not completed during the main interview) and the online dietary questionnaire. We send reminders just in case people have forgotten but we understand some people may prefer not to do these. If you’ve just decided not to complete these parts of the survey or have already completed them, please ignore any reminders we may send you.