Although Jos Buttler, Moeen Ali and Liam Livingstone all sparkled with the bat, England failed to post a total that would have put Pakistan out of the game.
From 137 for three in the 14th over and 164 for five in the 16th over, England lost their last five wickets for 36 runs to be bowled out for 200.
However, England’s trio of spinners, led by Adil Rashid, superbly exploited a pitch that rapidly deteriorated.
Rashid claimed two for 30, fellow leg-spinner Matt Parkinson one for 25 and off-spinner Moeen two for 32 as Pakistan lurched to 155 for nine.
England: 200 in 19.5 overs (Buttler 59, Hasnain 3/51)
Pakistan: 155/9 in 20 overs (Mahmood 3/33, Rashid 2/30, Ali 2/32). (Agencies)