Tony Miles in Worthing also use laparoscopic or keyhole techniques to repair hernias. In this case, the mesh is placed on the inside of the abdominal wall. This type of operation is technically more difficult than the "open" type and it takes longer for a surgeon to become skilled at it.
Hernias can cause a small amount of discomfort and not appear to be much of a problem, but they are often operated on to avoid them becoming strangulated, or twisted. A strangulated hernia is painful and needs to be treated as an emergency.
Video animations, courtesy of practice online.