Complex sentence: Ocado is a British internet grocery retailer headquartered in Hatfield, Hertfordshire, England, although an independent business Ocado is partly owned by the John Lewis Partnership, which owns Waitrose.
Split into simpler sentences: Ocado is a British internet grocery retailer headquartered in Hatfield, Hertfordshire, England. Although an independent business Ocado is partly owned by the John Lewis Partnership, which owns Waitrose.