The number of abortions among girls aged under 16 rose by 10% to 4,376 in 2007, official figures for England and Wales show.
In the under 14s, abortions rose by 21% from 135 in 2006 to 163 last year.
The number of abortions in all women rose by 2.5% to reach an all time high of almost 200,000.
Government advisers called for high quality sex education at school and investment in contraception services for young people.
Scotland has also seen a rise in the number of abortions with figures published in May showing there were 13,703 carried out in 2007 compared with 13,163 in 2006.
The number of abortions carried out has been rising ever since the 1967 Abortion Act - with just over 22,000 terminations in the first year.
In the past decade, the number of abortions in the under 16s has risen by 27%.
But at the same time the teenage pregnancy rate has fallen.
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