The interviewers ask this question to hear what qualities you will bring to the NHS and how you will benefit them if hired. Now is your chance to highlight your best characteristics and experience, showing the interviewers why they should hire you over other applicants. Review the job announcement before your interview and highlight the qualities, experience, and education the NHS seeks in a Band 7 pharmacist. Then, focus on using those keywords in your response. When describing how you meet their job requirements, the interviewers will see that you are a highly qualified candidate and place you high on the list.
As the interviewers mentioned, many qualified candidates are interviewing for the same position. You want to avoid speaking negatively of the other applicants or sounding arrogant when responding to this question. You want to sell yourself in the interview, but not while making the interviewers think you will be a challenging person to work with.