The Nave & Sanctuary lighting is carefully designed. There are no windows in the sight-line of the congregation and no distractions. Instead, the Sanctuary is lit by daylight from hidden skylights in the flèche, supplemented by environmentally-friendly LED lighting designed by Lighting Design and Technology. The lighting is designed so that it is proportion to the liturgical significance of the area, so the Sanctuary is the best-lit part of the cathedral. As Kulić noted: 'At Clifton, the architects did not eschew aesthetic expression, but, as example, manipulated light for its symbolic meanings.'