Complex sentence: The album debuted at number one in the United Kingdom selling over 40,000 copies on its first week, and despite its big critical success and high chart positions it is certified Platinum in UK and it has sold over 800,000 copies worldwide.
Split into simpler sentences: The album debuted at number one in the United Kingdom selling over 40,000 copies on its first week, and despite its big critical success and high chart positions. It is certified Platinum in UK and it has sold over 800,000 copies worldwide.