A2c. In Great Britain, citizens may still receive healthcare coverage through the National Health Service regardless of if they have a preexisting condition. In the United States, insurance companies are no longer allowed to deny coverage to citizens or charge higher premiums to citizens with a preexisting condition as the result of a law that went into effect in 2014. A3. In Great Britain, the financial impact of the National Health Service is minimal. Although citizens pay for health insurance through payroll taxes, they do not have to pay anything at the time healthcare services are rendered. I believe the financial implications are minimal because citizens do not have to pay for healthcare services regardless of your income status or ability to pay. Citizens of Great Britain enjoy...