Complex sentence: By the mid- 1990s Desmond Noonan was known as a notorious enforcer feared and respected by all who knew him, he was known as a very dangerous and violent man and had links with a wide range of Britain's underworld.
Split into simpler sentences: By the mid- 1990s Desmond Noonan was known as a notorious enforcer, feared and respected by all who knew him. He was known as a very dangerous and violent man and had links with a wide range of Britain's underworld.