blanket non-access to certain types of sites

Can any one help me? Just joined up with EE home broadband and down loaded security etc,

  please can somebody tell me how i can "blanket block" various types of net sites, eg adult, self harm, drugs, weapons etc. I would want to prevent my random home visitors not to have easy access to the above type of sites.

I had this this type of security with my previous wifi supplier, Talktalk.