but it doesn't necessarily, taken from the NHS site:
"Preventing cervical cancer
The most common high-risk types of HPV (HPV-16 and HPV-18) are responsible for about 70% of cervical cancer cases.
If your immune system does not deal with a high-risk HPV infection, it can lead to cell changes (dyskaryosis) and abnormal growth of pre-cancerous cells in your cervix. This is also known as cervical intraepithelial neoplasia (CIN).
CIN is not cancer but, if left untreated, it can develop into cancer in some women. This can take up to 10 years.
The HPV vaccine does not protect against all types of HPV, so it is not guaranteed to prevent cervical cancer.
Cervical screening
This is why regular cervical screening continues to play an important role in detecting potentially cancerous cell changes in the cervix (neck of the womb)."
As stated above, in the majority of cases most people's own immune system will deal with HPV but if it doesn't then CIN can develop whilst CIN is not cancer it can develop but it can take up to 10 years.
Given this immunisation is only effective for 6 years and that I hope my DD is not going to be sexually active for a good few more it just doesn't seem worth the risks, obviously a purely personal point of view.
You can find a lot of good information for and against here:
http://www.nhs.uk/Conditions/HPV-vaccination/Pages/Why-it-should-be-done.aspx