Campaigner Lucia Thomas said there was a "progressive, aggressive lobby which is seeking to push onto children and young people ideologies which parents would find inappropriate.
Sex is, let's face it, one of the most natural things in the world - so why would we not talk about it with our children from a young age?.
The mum-of-two took heed of a few suggestions in 'The Intelligent Parents' Manual' - especially the section on discussing the facts of life.