▁Sa fer ▁Internet ▁Program me ▁which ▁tested ▁parent al ▁control ▁tools ▁showed ▁that ▁under block ing ▁for ▁adult ▁content ▁r anged ▁from ▁ 5 - 3 5 %. ▁ ▁Crit ic ism ▁ ▁In ▁favour ▁Pro ponents ▁of ▁internet ▁filtering ▁primarily ▁refer ▁to ▁the ▁need ▁to ▁combat ▁the ▁early ▁sexual isation ▁of ▁children . ▁The ▁government ▁bel ieves ▁that ▁" bro ad band ▁prov iders ▁should ▁consider ▁automatically ▁blocking ▁sex ▁sites , ▁with ▁individuals ▁being ▁required ▁to ▁opt ▁in ▁to ▁receive ▁them , ▁rather ▁than ▁opt ▁out ▁and ▁use ▁the ▁available ▁computer ▁parent al ▁controls ." ▁In ▁ 2 0 1 0 ▁communic ations ▁minister ▁Ed ▁Va ize y ▁was ▁quoted ▁as ▁saying , ▁" This ▁is ▁a ▁very ▁serious ▁matter . ▁I ▁think ▁it ▁is ▁very ▁important ▁that ▁it ' s ▁the ▁I SP s ▁that ▁come ▁up ▁with ▁solutions ▁to ▁protect ▁children ." ▁ ▁Again st ▁The ▁Washington ▁Post ▁described ▁the ▁UK ' s ▁I SP ▁filtering ▁systems ▁as ▁creating ▁" some ▁of ▁the ▁strict est ▁cur bs ▁on ▁por n ography ▁in ▁the ▁Western ▁world ". ▁There ▁is ▁no ▁public ▁scr ut iny ▁of ▁the ▁filtering ▁lists . ▁This ▁creates ▁the ▁potential ▁for ▁them ▁to ▁be ▁expanded ▁to ▁st if le ▁diss ent ▁for ▁political ▁ends , ▁as ▁has ▁happened ▁in ▁some ▁other ▁countries . ▁The ▁British ▁Prime ▁Minister ▁of ▁the ▁time ▁David ▁Camer on ▁stated ▁that ▁Internet ▁users ▁will ▁have ▁the ▁option ▁to ▁turn ▁the ▁filters ▁off , ▁but ▁no ▁legisl ation ▁exists ▁to ▁ensure ▁that ▁option ▁will ▁remain