Sorry if I've misunderstood your situation here Appletree, I understood it that you're on work experience to make a UCAS application to medical school this year? If so, that isn't an internship, that's work experience, at least in this system. If its something else, then apologies.
Otherwise, this is not helping you. I get that its difficult with swine flu and you're trying to make the best of what you've got, which is sensible enough. Believe me, having worked in Admissions, on interviews and with selectors for several years, that what TommyWannabe is suggesting is absolutely not what we want from you. We want you to demonstrate a knowledge of the health service, how it works, where doctors fit into this and what makes you suitable to fill that role. Whenever candidates have talked about some bit of medical knowledge in a supposedly impressive way in an interview, its either sent the panel to sleep or they've made some horrific error in understanding (Sometimes in front of the exact wrong person) and its quite horrible to watch.
Sorry if I've misunderstood the situation, but that is what medical admissions want. TommyWannabe, if you want to tell us all about your career in Medicine, do feel free.