Australia bowled out for 239 in reply to England's record 481-6
England's biggest ever win & Australia's heaviest defeat (in terms of runs)
Hales scores incredible 147 off 92 balls
Bairstow - dropped on 30 - smashes 139, also off 92 balls
Morgan becomes England's record ODI runscorer in making 67 (30 balls)
Skipper also hits fastest half-century by an England player (21 balls)
Australia won toss; England lead five-match series 3-0
So can England beat their world record?
Will Jonny Bairstow bring up his century?
How much fun will Jos Buttler have later?
And will Siobhan and Richard email us in more details of the homing pigeon loose in their home?
Here's Stephan Shemilt to help us all find out...
Michael Vaughan
Ex-England captain on BBC Test Match Special
I love all kinds of cricket, but not when the contest is too far in favour of bat or ball. This is too much for the batsmen, there's nothing for the bowlers.
Image source, Reuterstms@bbc.co.uk
This is a very good T20 score. If these two stay in until say the 30th over, is this the day we first see 500 in an ODI?
Ed Mitchard, Edinburgh
Run rate 8.12
Andrew Tye is back on - can his cutters and knuckle balls restrict England's dominant scoring?
It does for now.
An excellent over, just a single from it.
#bbccricket
Zak Dunstan: I've just loaded up #bbccricket, external to see the score, only to be greeted by a huge score and pigeon talk... Didn't expect either.
Michael Vaughan
Ex-England captain on BBC Test Match Special
Australia struggle against spin, so I wonder why they give the pitch 50 overs to wear a little bit. They should have batted first while the pitch was at its very best.
Bairstow 92, Hales 25
Jonny Bairstow taps a single off the last to keep the strike. The England opener is into the 90s.
After a watchful first four balls of D'Arcy Short, Jonny Bairstow has had quite enough, standing still and cracking it over the covers for six.
That brings up the 200 for England, too.
Not to say Tim Paine is desperate here but he's just chucked D'Arcy Short the ball.
He's a left-arm leg-spinner and bowled in the last match, but has just 13 List A wickets and none in ODIs.
The only thing that hasn't gone England's way today...Jason Roy running himself out for 82...
Bairstow 84, Hales 23
Hah. Of course, I type that and Richardson follows up by beating the bat twice, with Hales loosely fending at the ball.
More width follows though and Hales slaps it to the man on the cover boundary for one.
Richardson then goes back of a length but Jonny Bairstow picks it up and crashes the ball deep over square for six more. The onslaught continues.
Jhye Richardson returns, sends it down wide and Alex Hales cuts it away to the fence.
Australia have bowled miserably to the new batsman.
#bbccricket
Spencer Sibson: In two world wars 32 homing pigeons were presented with the Dickin Medal.
Michael Vaughan
Ex-England captain on BBC Test Match Special
It's just a road. You'd think that England will challenge the 444.
Bairstow 78, Hales 18
Another boundary for Alex Hales as he clips Marcus Stoinis between mid-wicket and mid-on. Crisp striking already from the new batsman on his home ground.
Shot! A delicious cover drive from Hales races away to the fence. Not even that bad a ball but Hales easily beats the infield.
Hales finds the gap again! Stoinis offers width and the Nottinghamshire man slices it away behind point for four more.
Stoinis opts for the bouncer but goes too short and is called for a wide, soundtracked by jeers from the Trent Bridge crowd.
A flick to fine leg for one to finish. No sign of England slowing down after Jason Roy's dismissal.
England have named their squad for the Physical Disability Tri-Series against Bangladesh and Pakistan next month (8-13 July).
Middlesex duo James Nordin and Luke Stoner-Lewis join Hampshire’s Will Flynn in receiving their first call-ups into the senior side.
Led once again by captain Iain Nairn, England will be looking to win back the trophy after narrowly losing to Pakistan by three wickets in the 2016 final in Dubai.
The series is the first international Physical Disability tournament to be held in this country.
England kick off with a double-header against Pakistan and Bangladesh on 8 July at Barnards Green CC. The teams will be battling it out to reach the final on 11 July at Kidderminster CC.
Run rate 7.90
Tim Paine is bringing Aaron Finch into the attack to rattle through some slow left-arm at new bat Alex Hales. Finch only has two ODI wickets, though.
Hales gets off the mark with a tap down the ground for one before Jonny Bairstow does the same.
Not sure that's worked out for the Aussies - Hales has seen enough and sweeps Finch away for his first boundary.
#bbccricket
Andrew Reardon: Has anyone questioned the pigeon (15:07)? Identity theft is a big issue these days. Maybe he has stolen a real homing pigeon's identity.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
Alex Hales was the chef at the team's World Cup barbecue last night. I'm not sure I have total confidence in his cooking prowess, but they all seem to have survived.
Alex Hales is the new man in and defends his first three deliveries.