Does anyone know much about them? Or has anyone used one? I'm not registered with a doc at the mo, and even if I was my boss is making it difficult for me to have time off at the moment (I know i'm entitled to time off for the doc but it's a bit awkward). Are they like a GP surgery only you just walk-in without having to make an appointment? Or is it like a minor injury service for people who don't want to use A&E?