U.K. legal approval for the Apple ECG functi can take years. Ben Lovejoy ctacted the Regulatory Agency for medicines and healthcare products.
You may need to perform a clinical trial as part of the process to obtain a CE mark for your medical device. You must inform MHRA if you intend to do so at least 60 days before starting your research [providing] some basic informati about the research device, the target populati, the type of research and the estimated applicati date.
It turns out that Apple received just e day before the keynote FDA approval. It is likely that Apple has been working with regulatory authorities in the United Kingdom for some time, and that process simply takes lger than here in the US.