Interviewers in the NHS setting need to know that people they are considering hiring have thoughts on what they'd like to accomplish during their initial weeks on the job. This shows that they've put real thought into the job and are committed to it. Since Band 7 nurses manage a team of other nurses and oversee their work, part of your answer should entail getting to know your entire new team to build great rapport with them. On top of that, learning a new leadership process at the institution you are interviewing with will be important in your initial days on the job. Then, as you venture into the theatre nursing field, becoming comfortable and familiar with the new setting you will be joining will be an important first step as well.