Pakistan arrived in England to play a Test series for the second time in under two years.
England recall batsman Jos Buttler and name uncapped spinner Dominic Bess in the squad for the first Test against Pakistan starting next week.
England overtake India to reach No.1 in ODI rankings following annual update.
Bangladesh go above the West Indies after annual update. Australia and New Zealand have swapped positions just below the top two.
Pakistan are bowled out for 168 by Kent on the opening day of their tour of England.
The Oval to host the tournament opener between England and South Africa on 30 May.