Nurse's stories from within an abortion clinic
23 May 2012 Last updated at 16:41 BST
The Royal College of Obstetricians and Gynaecologists says one in three women will have had an abortion by the age of 45.
Abortions were legalised in 1967 but are still seen as taboo.
BBC Radio 5 live's Victoria Derbyshire broadcast from an abortion clininc which carried out 6,500 terminations in 2011 and spoke to health care assistant Karen about the kind of people she cares for.
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