A qualitative research study conducted in hospitals across England, in which staff members will be interviewed. We will interview staff who are directly or indirectly involved in delivering care for patients undergoing the operations of interest; namely bladder tumour resection, prostate resection or enucleation, and ureteroscopy for upper urinary tract stones. We hope to find out the reasons why some hospitals can perform day-case surgery with very high rates, and why others do not. We also hope to find out about any unexpected outcomes observed when performing day-case surgery for the operations of interest. Staff working in a range of different hospitals from across England with varying day-case rates will be interviewed. Hospitals in large city and more rural areas will be assessed. Interviews are anticipated to take place over a six month period. The study will end when saturation is achieved, whereby no new themes are identified through interviews. Saturation will be sought for each individual operation of interest.