The Old Bailey has been told that the men deliberately targeted vulnerable young girls, often those living in care and with troubled and unsettled lives.
They found girls who were "out of control" and may already have been sexually abused.
They would frequently approach the girls while they were playing truant from school or out having an illicit drink. The men groomed the girls by offering them alcohol, or sometimes by simply offering the kind of attention they craved and that was missing from their lives.
They would hook the girls in by plying them with drink and often gave the girls drugs, including cannabis, crack and sometimes heroin, which they then became addicted to.
More top news
The Duke and Duchess of Cambridge met young people who have battled mental health issues on Saturday.
Former Chancellor Lord Geoffrey Howe was Margaret Thatcher's longest-serving Cabinet minister, also taking on the role of Foreign Secretary.
Lord Geoffrey Howe is known by many for his resignation speech which was seen as the catalyst which destroyed Margaret Thatcher.