Tunisian Prime Minister Habib Essid told the BBC on Friday that police took too long to react to last week's jihadist attack that killed 38 people, mostly Britons.

"The time of the reaction -- this is the problem," Essid told the British broadcaster. Police had been "blocked everywhere", he added.

Essid spoke as Britain's Queen Elizabeth II and Prime Minister David Cameron led a minute's silence Friday for the victims, 30 of whom were British tourists.