Now iPhone users in those countries can access personal health information from hospitals, including immunizations and lab results on the Health app.
The feature was introduced in the US in 2018.
It's currently only available at Oxford University Hospitals and Milton Keynes University Hospital in Britain, with more set to follow in the future.
Apple has insisted it has built the feature with "privacy at the center of patient experience".
Kevin Lynch, Apple’s vice president of technology, said: "We designed Health Records on iPhone to empower people to easily view their health records at any time, and we are thrilled to put this feature in the hands of customers in the UK and Canada.
“We believe people should have access to their health information in the most private and secure way, and we have worked hand in hand with healthcare institutions and organizations to put privacy at the center of the patient experience.”