Complex sentence: Digby Jacks (16 May 1945--21 October 2011) was President of the UK's National Union of Students between 1971 and 1973 and was subsequently a trade union official for the Manufacturing, Science and Finance trade union.
Split into simpler sentences: Digby Jacks (16 May 1945--21 October 2011) was a British student activist and trade union official. Jacks became the President of the UK's National Union of Students in 1971 serving until 1973, and was subsequently an official for the Manufacturing, Science and Finance trade union.