Root takes two wickets in an over but Australia close on 339-5
Smith, who ends 85 not out, involved in century stands with Labuschagne and Head
Head stumped after brilliant 77 off 73 balls
Pope off the field with a shoulder injury
Tongue bowls both Khawaja and Warner
England won toss; Starc replaces Boland for Australia
Australia lead five-match series 1-0
A wild ball from Joe Root is way down leg and Jonny Bairstow cannot get there, with the ball fizzing away for four.
That over has just relieved the pressure England were starting to build.
Josh Tongue will bowl what is likely to be the last over before tea.
Joe Root has just bowled a 74mph bouncer to Marnus Labuschagne.
We have reached that stage already.
Matthew Henry
BBC Sport at Lord's
A fan in a Chennai Super Kings shirt has just clambered over three rows of seats to get a selfie with Kevin Pietersen.
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Tell you what, as an Australian, England rocking between three 79mph bowlers is excellent. Other than Tongue has been pretty easy. 5-0?
From Pat
Cummins? I thought players weren't allowed phones during play?! Another void series, such a shame...
Smith 37, Labuschagne 43
Image source, PA MediaJosh Tongue looks England's most dangerous bowler by a distance, his extra pace finding some life in this docile pitch.
He gets Marnus Labuschagne pushing forward again to a delivery that gathers speed down the slope before flashing past the outside edge.
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Given the whingers (15.21) seem to have conveniently short memories, may I remind them we have won 11 out of 14 Tests under this approach. A lot better than one out of 17 before then isn't it?
Optimistic of Peterborough
Can we just not play Australia at Lord's anymore?
Sean, Lincoln
The run rate increase seems to have coincided with Ollie Pope going off injured. Is it possible he single-handedly kept the rate down?
Dan, Royston
Joe Root comes around the wicket to Steve Smith with a slip and leg slip in place.
'Very good Joe!" is the cry from his Yorkshire team-mate Jonny Bairstow.
Steve Smith repeatedly tries to pick out a gap in the leg side but can only pick out the fielder each time.
A welcome maiden for England.
As per CricViz's captaincy grid, which rates the selection of each bowler to each batter, Root is considered a bad option at both Smith and Labuschagne.
Oh dear.
Who had the 47th over in the 'let's chuck it to Joe Root' sweepstake?
Because here he is.
Andy Zaltzman
Cricket statistician on Test Match Special
Australia were 181-2 off 45 overs. In the last few Tests at Lord's, after 45 overs Ireland were 148-7, England were bowled out after 45 overs exactly last year for 165, New Zealand were bowled out in 40 overs for 132. It's the second highest score after 45 overs that England have conceded at Lord's when they have bowled first.
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For Tom Mallows, I've tried going to the toilet, making several teas, and popping out for a walk but nothing has helped to increase the wicket count. Any other ideas?
Stefan, St Albans
I appreciate your efforts, Stefan.
How about the lucky socks?
It does seem to be brightening up at Lord's, with even a touch of blue sky breaking through the clouds.
Steve Smith notches another three runs to his score with a flick through the leg-side.
Those two earlier rain delays mean we have an extra 20 minutes before tea, which will now take place just before 16:00 BST.
Steven Finn
Former England bowler on BBC Test Match Special
The lights are a complete waste of electricity if you ask me, the light is bright enough as it is.
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BR825: Why are English cricket fans so reactive and panicky? Two of the best players in the world are batting well and our fans act as if the world is ending. Chill out, the opposition are allowed to play well.
Martin Allott: Ashes drifting away again. This has been so poor from England having won the toss!
Ben Stokes knee is tested as he sprints all the way to the mid-off boundary to claw back a drive from Marnus Labuschagne, saving one run.
Tongue's over also included a no-ball, something that is becoming an issue for England in this series.
Steven Finn
Former England bowler on BBC Test Match Special
You can tell when someone has a shoulder problem, they grab their shoulder and their arm is just flopping around. Let's hope it is nothing serious for Ollie Pope.
Without DRS this could have been a very different session.
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Dan: Bazball is all about mindset. But fielding/ catching is all about practice and training, which England seem to think they can do without...
Image source, Getty Images
Image source, Getty ImagesMore on Steve Smith's CricViz captaincy grid, where England only have yellow or red options in their recognised attack in this line-up. The only bowlers in Test cricket to be green would be left-arm spinners, including Ravindra Jadeja, Keshav Maharaj, Shakib Al Hasan and Jack Leach...
Australia have played very well but England can point to a few marginal decisions that have not gone their way this afternoon.
Josh Tongue is being brought back into the attack, which livens the crowd up,