hmmm... I've had that a few times as you could imagine the number of times we work with the LAS. As far as I am aware patient confidentiality only extends as far as their medical circumstances. Just as we (the Police) aren't supposed to be told that the person we are dealing with has a blood-borne disease for example (although we usually are out of courtesy) as it shouldn't change how we deal with them, the fact that the person may or may not be wanted isn't the concern of the medical professionals and shouldn't come into the way in which they/you deal with them. If the person has an injury then that always takes precedence over a criminal matter anyway, as it rightly should. I have never heard of a medical professional being criticised by the BMA or anyone else for informing the Police that a person they have in situ or in hospital is wanted or is of interest. The flipside is someone (the CPS) could possibly go down the lines of assisting an offender but as you surely know, some people talk a lot of bollocks and unless you know for a fact that the person has committed, is suspected or wanted in connection with committing an offence then you will never be dealt with from a legal point of view. Practically, I think that most criminals we deal with know or believe that at some point if they are wanted and they go 'into the system' either through NHS or criminal justice then they are going to be found out. I've no doubt you've had people who have refused to give you personal details for one reason or another when they have had an injury, most of the time it's because they think we (the Police) are going to get involved and if that impedes their treatment, then more fool them. A W/M (wanted/missing) marker could be for anything from an information report to a circulation for rape/murder, if you believe that the Police should be informed then I personally don't think there is any harm ethically, legally or otherwise in passing the information. The most that will happen is they are dealt with after medical treatment anyway, and we do get lots of people who believe they are wanted for anything and everything and simply aren't, in which case we don't care if they big themselves up.