The interviewers want to know why you left your last job to see if you were fired, gave notice, or were laid off. If you were fired, they want to know if you will admit why you were fired, if you take responsibility, and what you learned from the experience. If you gave notice, they want to understand what you did not like about your job to see if you would fit in with the company culture at the NHS.
Focus on being direct and honest, and explain why you left your last place of employment. If you gave notice, were laid off, or fired, describe the circumstances behind your leaving. Be sure to end your response on a positive note and tell the interviewers how you are excited to have the opportunity to interview for the position with their organization.
Avoid saying anything negative about your previous employer, manager, patients, or colleagues. When you speak poorly of others, it shows the interviewers that you may be challenging to work with and talk about others behind their backs.