Complex sentence: Keppel appeared on the 20 November 2000 of "Who Wants to be a Millionaire", becoming the 12th winner in the world and the first in the UK to win one million pounds.
Split into simpler sentences: Keppel appeared on "Who Wants to be a Millionaire", broadcast on 20 November 2000. She became the 12th winner in the world and the first winner in the United Kingdom to win one million pounds.