You will receive an invitation by email and by post.
The easiest way to access the questionnaire will be to click the link in your email invitation. You will then be asked to enter your date of birth and then you will be able to proceed.
If you do not receive an email you can access the survey by visiting www.cohortcovidsurvey.com. You will need to enter the Unique ID and Password which you will find in your invitation letter and will then be asked to enter your date of birth.