So if you are working approx 24 hours from the times you listed and are fully booked with patients during these times then that is around the figure of 1500 pounds, from which you are paid approx 230 pounds (minus tax etc), lets say the receptionist is on the same money as you, that means an extra 230 in the boss's pocket taking their weekly earnings to 1250. You on the other hand are only taking 12-15%. Another way to approach payment is by being paid per patient, downsides are when you are not busy you don't get paid but plus side when you are busy you make very good money. I am 13 years qulaified and when I locumed i was earning about 26-27 pounds an hour in London and surrounding areas, so I would put togehter some figures speak to the boss and if you don't get a good deal try wokring somewhere else. Good luck