Update your telephone number or email address for this year’s study

If your telephone number or email address has changed since the last interview please fill in the form below. Also please fill it in if there is a different number that you would prefer to be called on. This will let us know where to send the email invite for the survey and which number to call you on if you decide not to complete the survey online.

Please complete as much information as you know. Your reference number will be printed on all the letters and emails you have had from us in the past, in the top left-hand corner. If you do not have this to hand, don’t worry, just try and fill in as much of the other information as possible.