First innings score is 160/5 and England's position is very stable and strong so far.Pakistan will need to play sensibly if they really want to win this match otherwise they will have bad start in this series.
I dont agree with you because 160 runs is not runs to declare England clear winner.I will say both teams have equal chances at this stage to win.If the target was over 180 runs then there could be some concern about it.It is bit hard to predict at this stage but first 10 overs will make the situation clear.