Complex sentence: Manzoor was born in Pakistan and arrived in Britain in May 1974 in the company of his mother, older brother and sister joining their father Mohammed Manzoor who had left Pakistan in 1963 to seek work.
Split into simpler sentences: Manzoor was born in Pakistan and arrived in Britain in May 1974. He accompanied his mother, older brother and sister to join their father Mohammed Manzoor who had left Pakistan in 1963 in order to seek work.