The Endoscopy department is situated upstairs on the first floor in Zone N.
Enter the hospital at the main entrance and continue straight on, at the end of the corridor turn left. Continue on and take the first elevator or flight of stairs to the first floor. Continue left until you reach zone N. Take a left and continue along the ITU/Endoscopy corridor until you reach the endoscopy entrance on the left.
You can view the site plan here: Princess of Wales Hospital Site Plan