I predicted that the hon. Lady would raise the issue of overhead line equipment. I have already met the route managing director Rob McIntosh to discuss that specific issue. He said to me that he is looking carefully at how to best improve reliability of the overhead lines, particularly during periods of high winds and heavy storms, which often cause a problem. They are looking at sites with significant gradient and reviewing vegetation management near overhead lines, track geometry and the reliability of system tension during periods of high winds.