Hi OP, I attended a webinar this week about talking about sex and relationships with DC. The key thing I learned was that messages start from a very young age (think 2). I have DD 7 and DS 4 asking different types of questions and understand the policy should always be to answer honestly in an age appropriate way.
Below are the resources we were suggested to look at after the session (for different ages)
FPA
Advice for parents and information about sexual health. Publish leaflets and booklets for children of different ages.
www.fpa.org.uk
Family Lives
Specific advice on issues like pornography, sexting and sexuality, with helpline and email support.
www.familylives.org.uk
NSPCC
Useful sections on talking to children of all ages on sex, stranger danger and staying safe.
www.nspcc.org.uk
FFLAG
Supports parents and their gay, lesbian and bisexual sons and daughters.
www.fflag.org.uk
Brook
Provides free and confidential sexual health advice to young people via email, webchat and telephone helpline.
www.brook.org.uk
Useful Books
The following books are written for children (2-10 years):
Where Willy Went, Nicholas Allen
Mummy Laid an Egg, Babette Cole
Hair in Funny Places, Babette Cole
There’s a House inside my Mummy, Giles Andreae
Ready, Set, Grow (What’s Happening to My Body?), Lynda Madaras
Let’s Talk About Sex, Robie H. Harris
Let’s Talk About Where Babies Come From, Robie H. Harris
Where did I come from? Peter Mayle