Study information, eligibility check, consent

Welcome to the FEED study

The aim of this study is to describe contemporary plant-based diets (e.g. flexitarian, vegetarian, and vegan) and diets containing meat and fish in UK adults and to examine the motivations and characteristics of the adults consuming these diets.

The Principal Researcher is Dr Keren Papier, who is employed with the Nuffield Department of Population Health at the University of Oxford. This project is being conducted in collaboration with the Wellcome “Our Planet Our Health” programme “Livestock, Environment and People (LEAP)” and the World Health Organization.

Why have I been invited?

You have been invited to participate because you are aged 18 years or older, living in the UK, have internet access, and a compatible device for this study (a smart phone, tablet, or computer).

Do I have to take part?

No. Please note that participation is voluntary. We have also included a ‘Prefer not to say’ option for each set of questions. If you do decide to take part you may withdraw at any point for any reason, simply by closing the browser or by not submitting. If you have submitted your data and would like to withdraw it, you may do so by contacting the research team (details below) and asking to withdraw your submission based on the email address you submitted. If you do not submit an email with your submission, we will not be able to identify your data or withdraw you. Once you have withdrawn from the study, we will not contact you further and your data will no longer contribute to further research but we will not be able to remove your data from research that has been published or submitted for publication. You may also ask any questions before deciding to take part by contacting the research team.

What is involved?

If you give your consent to take part, we will ask you to complete an online survey about your diet, your socio-demographic characteristics, and the motivations for your eating habits.  The questionnaire takes about 20 minutes to complete. No background knowledge is required. Only the research team at the Nuffield Department of Population Health, at the University of Oxford will have access to your personal data, and the findings reported in all publications arising from your data will be presented in aggregated format so that you and other participants cannot be identified.

How will my data be used?

The data we will collect that could potentially identify you will be your email (optional), age, gender, ethnicity, and the first four digits of your post code. Your IP address will not be stored.

The results will be published in scientific journals, presented at research meetings, and made available on the FEED study webpage. Anonymised data may be shared through secure mechanisms with other researchers in the interest of open and transparent science. The identifiable information that you provide us with will be stored on a secure server within the Nuffield Department of Population Health and will only be accessed by individuals within the research team for the purpose of this research. Your email address and the first four digits of your post code information will only be kept for the duration of this project (five years) unless you have provided your consent (optional) to be contacted again in future. All research data and records will be stored securely on the Nuffield Department of Population Health, University of Oxford servers for up to 10 years and then deleted.

Who will have access to my data?

The University of Oxford is the data controller with respect to your personal data and, as such, will determine how your personal data are used in the study. The University will process your personal data for the purpose of the research outlined above. Research is a task that we perform in the public interest. Further information about your rights with respect to your personal data is available from the University’s Information Compliance team.

The data you provide will be used by the research team. Responsible members of the University of Oxford may be given access to data for monitoring and/or audit of the study to ensure that the research is complying with applicable regulations.

We would also like your permission to share anonymised data with students and other researchers (e.g. in online databases). All of your identifying information will be removed from the data before it is shared with students or other researchers or results are made public.

Who has reviewed this study?

This project has been reviewed by, and received ethics clearance through, a subcommittee of the University of Oxford Central University Research Ethics Committee [R79226/RE001].

Who do I contact if I have a concern or I wish to complain?

If you have a concern about any aspect of this study, please contact the research team (, and we will do our best to answer your query. We will acknowledge your concern within 10 working days and give you an indication of how it will be dealt with. If you remain unhappy or wish to make a formal complaint, please contact the Chair of the Medical Sciences Interdivisional Research Ethics Committee at the University of Oxford: Email:;  Address: Research Services, University of Oxford, Boundary Brook House, Churchill Drive, Headington, Oxford OX3 7GB.

2.2. If you have read the information above and agree to participate with the understanding that the data (including any personal data) you submit will be processed accordingly, please tick the box below to start.

If you do NOT consent close the browser tab/window.