Postpublished at 15:54 British Summer Time 27 August 2017
And there was a nervy moment for Mark Stoneman at the end of the session, surviving a West Indies lbw review...
England close on 171-3 - a lead of two runs
Root & Malan share unbroken stand of 77
Both batsmen reprieved - Root dropped & overturns lbw dismissal
Stoneman hits maiden Test 50 but Westley (8) fails again
Eng 258: Stokes 100; WI 427: S Hope 147
Matthew Henry
And there was a nervy moment for Mark Stoneman at the end of the session, surviving a West Indies lbw review...
But Windies captain Jason Holder stepped up to change the complexion of the afternoon as he removed Cook as part of a sublime over...
On an afternoon of calm accumulation for England's openers, there wasn't exactly a flurry of boundaries.
However, Stoneman showed some nice touches on the drive...
And Cook will always clatter anything short, wide and very cut-able...
Let's take a quick look back at the highlights from the afternoon session...
Michael Vaughan
Ex-England captain on BBC Test Match Special
Holder got the ball moving and got the key wicket of Cook.
Stoneman has done the first job to get to tea and Westley has also survived until tea.
It was a good session of Test cricket. England started really well and then Holder held up an end before he managed to get the ball moving around.
England have to make sure they are no more three down at the close to give themselves a chance of batting tomorrow and getting 200 in front.
#bbccricket
Christian Reilly: I'm warming to Stoneman. Thinking that he's a little more physically robust than Hameed. That size advantage will be key for the Ashes.
Stoneman 35, Westley 4
Westley leaves well alone and survives through to tea.
A really good session of Test cricket - England on top for the first part but Jason Holder has nagged away and then produced a beautiful over to remove Cook.
Stoneman has looked solid - can England keep building in the evening session?
Dan Norcross
BBC Test Match Special
It suddenly looks more difficult to bat in the last 20 minutes.
Ball tracking shows it would've hit middle stump flush but was pitched too short to be in line, with Gabriel coming over the wicket to the left-hander.
Meanwhile, the Windies quick bowls a massive wide and that's his cue to come over the wicket.
Stoneman clips into the leg side for one.
Westley should be facing the last ball before tea with all these delays now...
Michael Vaughan
Ex-England captain on BBC Test Match Special
That just skidded a little low, worryingly for England.
Eng 66-1
It skidded low and looked to be going on to hit the stumps but crucially it did indeed pitch outside leg stump.
Stoneman survives.
Shannon Gabriel returns - Stoneman edges him away for four but the Windies quick responds by clattering his pads.
Loud appeal - the umpire says no but Windies review straight away.
Has it pitched outside leg?
Dan Norcross
BBC Test Match Special
The game's at a really tense stage. Runs are not being scored - there's been four runs in four overs. It's all very well England batting time but there's another aspect to that equation. With a deficit of 169, the pitch deteriorates and gets worse and harder to bat on.
Holder 8-3-10-1
The ball seems to be dying a tad on the pitch, bouncing before it reaches Dowrich behind the stumps.
Ooooh - Holder teases Westley with the outswinger before coming back with a hooping inswinger that the Essex man leaves as it whistles close to the stumps.
I guess that goes down as a good leave. Holder can't believe it didn't hit. He'll have to settle for a maiden.
Michael Vaughan
Ex-England captain on BBC Test Match Special
So far in his Test career, Tom Westley has been positive against spin. He always tried to take the attack to South Africa's Maharaj.
Trail by 107
Westley guides into mid-wicket for a couple, then flicking off his hip for one.
Stoneman back on strike but happy just to leave Chase outside off, some big spin but too wide.
Stoneman 30, Westley 1
He's not quick but Holder doesn't half routinely hit that teasing line and length just outside off.
He beats Westley's bat first up with one that nips off the seam. A bit of a stalemate follows before the Essex man scampers one.
#bbccricket
Joseph Wilcox: Stoneman looking solid and worth a run in the side. Hopeful for Westley at three and then bring in Hales or Ballance at five.
Trail by 111
From a flat deck to a snake pit - Chase is now finding plenty of venom outside Stoneman's off stump.
The opener is leaving well but a few there really did bite.
Stoneman 30, Westley 0
New man Tom Westley - yet another in need of a big innings - survives his first ball.