Please only use this form if you want to register in the TwinsUK Cohort. If you are here for the COVID-19 Symptom Tracker App please CLICK HERE.

Thank you for your interest in joining TwinsUK, the UK’s largest research registry for twins aged 18 and over.

To find out more about joining the TwinsUK registry and what it means to take part in health research, please submit your contact details below and a member of our team will get in touch shortly.

Please note, we will also need to separately register your twin’s interest so please make sure they also fill in this information online.

  • Name:
  • Email:
  • Phone Number:
  • Preferred Method of Contact:
  • If you were referred by a twin who already takes part in our research, please complete the details below:

  • referring twin info: