where my misses works some consultants do work weekends, also some are on call if they are needed, and finally there are probably some ST's (specialist Trainee's) might be there, they've spent 5yrs at med school, 2 years foundation and whatever ST level they are from 1 to 7, so that's from 1 to 7yrs of further training, patients are not left in the hands of newbies