Complex sentence: Financial Times Press in the United States and Financial Times Publishing in the United Kingdom, the book publishing imprints related to the Financial Times newspaper, which are both owned by Pearson plc, the global publishing company.
Split into simpler sentences: Financial Times Press in the United States and Financial Times Publishing in the United Kingdom are the book publishing imprints related to the Financial Times newspaper. The book imprints and the newspaper are owned by Pearson plc, the global publishing company.