Complex sentence: The cathedral was eventually built to a simpler design by Sir Frederick Gibberd; while this is on a smaller scale than Lutyens' original design, it still manages to incorporate the largest panel of stained glass in the world.
Split into simpler sentences: The cathedral was eventually built to a simpler design by Sir Frederick Gibberd. While this is on a smaller scale than Lutyens' original design it still incorporates the largest panel of stained glass in the world.