Cook shows the way
Following a heavy defeat in the second Test at Trent Bridge, England's batsmen came in for some fierce criticism for a cavalier approach that is often not suited to the longest form of the game.
Here, they all looked to apply themselves, with Cook giving a perfect demonstration of the judgement, grit and patience that has made him England's all-time leading run-scorer.
The left-hander only played the ball when necessary, often leaving on length, scoring with tickles off the pads and pushes square on the off side.
He added 52 with Essex team-mate Westley, 49 with captain Joe Root and an unbeaten 51 with Ben Stokes, who remains on 21.
With the match evenly poised, England will look to the former skipper to push on to a 31st Test century and well beyond on Friday.