Surgeons in UK are referred to as "Mr or Ms" Just go to any British medical website and you will see. This is a British traditional custom. Back in the middle ages, surgeons were called "barber-surgeons" and therefore they were not considered doctors. Only internal medicine people were considered "real doctors" back then. Over the centuries, they have kept the tradition of not referring to surgeons as "Dr." They make this distinction very clear: an interventional cardiologist would be called "Dr" even though he/she spends majority of time doing procedures just like surgeons.
In fact there are other interesting differences between UK and US medical systems: attendings are called "consultants"; Staff physicians are often called "Medical Officers"; ER is called "A & E" which stands for accident and emergency; you receive MBBS or MBChB degrees; Instead of calling "School of Medicine", they say "Faculty of Medicine."
