Birthday 2023

Happy birthday for April! We hope you like this year’s birthday card and 2023 update which will be on its way to you soon. Here you can find links to the full research papers covered in the update.

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How do you find us if we move?

We need to keep in touch with as many of you as possible to make sure BCS70 continues to represent the diversity of your generation. If we find out that you’ve moved, we will try to find your new address. We first try to contact you through the direct links you have given us, such […]

Do you use information held by Government to find us?

We try to trace study members using information held by government departments and agencies. We securely transfer the personal details (name, sex, date of birth, and last known address) of study members to NHS Digital who use these details to identify our study members using the NHS Personal Demographic Service (PDS), a database which holds […]

Do you use information held by private companies to find us?

If we are unable to find you in any other way we use the services of AFD Software, a company which specialises in contact-details validation. Read more about AFD Software on their website. We securely transfer the personal details (name, sex, date of birth, and last known address) of study members to AFD. AFD then […]

Do you use the internet and social media to find us?

Sometimes we try to find study members using the internet and social media. This may involve carrying out internet searches, for example using Google, and searching on Facebook and other social media sites. We also know that it can be difficult to identify people accurately on the internet and social media. So, whenever we are […]

What if I leave the country?

If you move abroad please let us know your new contact details, including your address, telephone number and email address so that we can keep in touch and send you letters and updates. You can contact us with these details by Freephone (0800 0355 761), or by email ( Your call and/or email will be […]

What do I do if I move?

It would be very helpful (as well as saving us time!) if you could contact us to let us know where you have moved to. This is simple to do. All you have do is either call us via the Freephone telephone number (0800 0355 761) or email us at If you have recently […]