England are on the verge of a famous victory after Harry Brook smashed the second-fastest triple century in history, Joe Root scored a career-best 262 and the tourists declared their first innings at an enormous 823-7 against Pakistan in the first Test on Thursday.

Pakistan, who scored 556 in its first innings, collapsed the second time round to reach stumps on Day Four at 152-6, needing another 115 runs to avoid an innings defeat.