In a series of 50 cadaveric renal allotransplants performed between September, 1969, and February, 1973, a simple technique of uretero‐vesical anastomosis performed from outside the bladder was utilized. Intravenous pyelography with a micturating cystographic phase was performed at regular intervals following operation in an attempt to define the incidence of mechanical urinary tract complications. Four cases of urinary leakage occurred, three requiring reoperation, and there was one case of ureteric obstruction due to a lymph cyst, Five cases of reflux into the transplanted ureter were demonstrated. We conclude that the incidence of complications is equivalent to that reported following the more standard and time‐consuming uretero‐neocystostomy used by most groups, and that this simple technique of uretero‐vesical anastomosis provides a useful alternative pr