England are 4/9 from 8/15 with Stan James for the 5th ODI after Andrew Strauss won the toss and elected to bat at the Rose Bowl.
Head of PR Charlie McCann, on the latest cricket betting odds, said: "We believe batting first is a big advantage and if England can get anything over 250 it will be hard for Pakistan's fragile batting to chase a total under lights with the series on the line."
5th ODI:Latest prices
England 4/9 (from 8/15)
Pakistan 7/4 (from 13/8)