Please note this indicator has been removed from the portal pending a methodological review. We endeavour to update this as soon as possible.
The next release date for this indicator is to be confirmed.
Legacy unique identifier: P01870
Internet explorer is no longer supported
We have detected that you are using Internet Explorer to visit this website. Internet Explorer is now being phased out by Microsoft. As a result, NHS Digital no longer supports any version of Internet Explorer for our web-based products, as it involves considerable extra effort and expense, which cannot be justified from public funds. Some features on this site will not work. You should use a modern browser such as Edge, Chrome, Firefox, or Safari. If you have difficulty installing or accessing a different browser, contact your IT support team.