Nerve endings in the brain are not sufficiently formed to enable pain to be felt before 24 weeks, according to the report by the Royal College of Obstetricians and Gynaecologists, which had been commissioned by the Department of Health.

The report said: “It can be concluded that the foetus cannot experience pain in any sense prior to this gestation.”

Professor Allan Templeton, president of the Royal College, who chaired the review, told The Times that research put forward by anti-abortion campaigners that the human foetus did feel pain at or before 24 weeks was based on evidence from premature babies. This did not apply to the foetus in the womb, he said.