Ooh I say, what a good shot that is from Perera. He picks up a length ball from Anderson and short-arm jabs it over square leg for a one-bounce four. What a pick-up. Eranga has to face one ball and survives it, largely by not being good enough to get anywhere an absolute peach from Anderson.

Andrew Samson
BBC Test Match Special statistician

"Sri Lanka's last three wickets in the series have averaged 6.1."

Eranga does little to inspire confidence by playing and missing at his first two deliveries.

Michael Vaughan
Ex-England captain on BBC Test Match Special

"That was just a little bit too close to play that stroke - it came down the slope. Third man is Herath's favoured area but on this occasion he chose the wrong ball. You could tell by the celebrations that England were frustrated."

Andrew Samson
BBC Test Match Special statistician

"Rangana Herath has got to 30 in consecutive innings for the first time in his Test career."

Michael Vaughan
Ex-England captain on BBC Test Match Special

Image source, Getty Images

"England are chasing it - they are trying too many things. They were disciplined at the start of the day. As a side, you've got to be composed and patient and stay in that disciplined mould."

More annoyance runs for Sri Lanka, four leg byes when Perera attempts to flick Jimmy Anderson and the ball glances off his thigh pad. Frustration rising for England...

Jonathan Agnew
BBC Test Match Special

"Stuart Broad was desperate for that to be reviewed. That is the ultimate in ambition."

Herath providing some serious irritant value here, like chilli powder in your jockstrap. He wafts at a Stuart Broad delivery and pings it over the top of the slips for four. He then picks up another four by getting the tiniest contact on a swivel pull. In between, he was hit in front, but the ball was sliding down leg. Time for drinkies.

Unspeakable heresy. May the Lord have mercy on your soul.

This seventh-wicket pair are doing a sterling job for Sri Lanka. Let's not forget they came together at 205-6, so the stand is worth 59. Anderson hammering that off-stump-or-just-outside line, Perera stout in defence. Maiden over.

Andrew Samson
BBC Test Match Special statistician

"Herath is up to 105 runs in the series, which is the most he's made in a series."

Tim Swinn: How can it be umpire's call on impact when the umpire made his decision thinking it hit bat first? 

The TV cameras pick out Messrs Morgan (Eoin, not Piers) and McCullum in the crowd, both with heads bowed and casting solemn downward glances. Either engrossed in Fruit Ninja on their phones, or both locked in prayer. Herath is making a strong bid to be upgraded to the 'no mug' category - he times Broad beautifully through the covers, then whip-hooks him off the front foot for a second boundary. Woof.

TC: This is perfect cricket right now. Something in it for the bowlers, but not unfair for batsmen. I'm riveted.

Image source, Getty Images

Herath can't certainly throw the willow around - a lovely slashing cut off Anderson pings off the face off the bat and zips to the point boundary, bringing up the 50 partnership. A frustrating little stand for England, a valuable one for Sri Lanka. 

Perera likes that baseball-style bludgeon down the ground - this time it's Broad who gets the treatment. No foot movement, just stand and deliver, as Adam Ant would say. He then back-foot punches nicely into the off side and picks up a couple more.

Alison Mitchell
BBC Test Match Special

"Alastair Cook has gone for a precautionary X-ray on his knee."

Listen to Test Match Special overseas by clicking here, external.Not available to listeners in the UK, Sri Lanka, India, Australia, New Zealand, Pakistan and Bangladesh.