The question over whether teenagers should be given the morning-after pill is arousing strong arguments on both sides.

The latest study suggests that the expansion of contraceptive services has increased sexual behaviour among the young, rather than reduced it. This, in turn, has increased the number with sexually transmitted diseases.

It is easy to claim that the Government's policy has failed and should be abandoned. But those promoting it should not be condemned out of hand. They are making a serious and sincere attempt to tackle a growing social problem.

One worrying aspect, however, is how parents have been sidelined. Children can access the new services without parents' knowledge. Don't they have a right to be heard?