Complex sentence: It peaked at number 3 on the UK album chart and was certified Gold by the BPI for sales of over 100,000 copies, it was also an international success and eventually went on to sell more than 1 million copies worldwide.
Split into simpler sentences: It peaked at number 3 on the UK album chart and was certified Gold by the BPI for sales of over 100,000 copies. It was also an international success and eventually went on to sell more than 1 million copies worldwide.