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Ollie Pope speaking to Sky Sports: "It was the ideal start to the tour obviously. We really listened to what Baz and Stokesy have said. It was an amazing day and I couldn't be happier for Brooky.
"It started from the get go - 14 from the first over. It put them under pressure and they looked like they panicked a little bit. It looked like there wasn't anywhere they could bowl to those two, It was a perfect way for them to set us up for a series."
Asked if he ever thought the side would score 500 in a day, Pope said: "No, to be honest, not necessarily.
"The best thing is everyone has lived by how the two guys up top want us to play. They want us to entertain people. It is not about milestones. It is about putting on show and putting the team in a good position. The fact everyone is so happy to buy into that puts us in a really good place."
'It is fantastic for English cricket and fantastic for the world game'
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Sri Lanka legend Kumar Sangakkara on Sky Sports: "The traditional perspective England had has changed. Cricket has a new landscape and there is opportunity for a new kind of player to graduate from the shorter versions and into the red-ball format, not the way it has been traditionally done. It is fantastic for English cricket and fantastic for the world game."
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Pakistan's bowling figures make for tough reading, and England will certainly be breathing a sigh of relief that they won the toss.
Naseem Shah 0-96 (15 overs)
Mohammad Ali 1-96 (17 overs)
Haris Rauf 1-78 (13 overs)
Zahid Mahmood 2-160 (23 overs)
Agha Salman 0-38 (5 overs)
Saud Shakeel 0-30 (2 overs)
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England batter Zak Crawley, speaking to Sky Sports: "It was a good deck. I felt I played well. It was nice to bat like that after a tricky summer and thankfully I got a hundred today. I was trying be positive - I got lucky on a few occasions. I felt in good touch and am pleased with how I played.
"I was disappointed when I got out. I wanted a few more. I felt like I played alright in the summer at times but couldn't get that score."
Post update
Vic Marks
Former England spinner on BBC Test Match Special
It's an extraordinary display of batting. It wasn't as if they went searching for big shots. Obviously the bowling wasn't perfect but despite all that, it's an extraordinary scorecard with all four centurions playing with such certainty.
It's fantastic for Stokes and McCullum to have this score. It takes an unusual state of mind to just go for it in a strange conditions where they haven't been in so long.
Post update
England batter Ben Duckett after his maiden Test century, speaking to Sky Sports: "Very special. A pretty crazy day to be honest. I think an even crazier build-up to the Test with a lot of us ill in bed. At one point we weren't sure if we were going to get out. For me personally it is a special day, one I didn't think would come around."
On the illness in the build-up: "I didn't move from my bed all day."
On his time out of the side: "I was back at my county trying to score as many runs as I could. I felt I wasn't close to being picked. The real change was looking at this squad at the start of the summer. I went back to playing with more freedom."
On the Stokes-McCullum environment: "I don't think there will ever be a better environment to be involved in. I am sure there will be lots of cricketers desperate to be in this dressing room and I was one of them last summer. They allow you to play your game and play with freedom."
It's been a golden day for England. It's the fastest any Test team has ever reached 500.
Zak Crawley set the tone and Ben Duckett back in the side and made 107. Muhammad Ali had a bit of a nightmare in the field.
It's one of those days were it's almost impossible to encapsulate what we've seen.
Post update
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Must be quite funny for cricket fans checking the scores when they woke up this morning, expecting to see the day delayed because of England's illness and instead seeing 500 scored in a day.
But spare a thought for Pakistan's bowlers because that was an absolute horror show.
Brook 'has got it all'
England white-ball captain Jos Buttler on Sky Sports speaking about Harry Brook: "You watch him bat in the nets and has a very disciplined method. Even in a T20 game, he will unfurl a perfect forward defence. He has so much game for every format. He has got it all. He loves batting as much as Joe Root."
Get Involved
#bbccricket
Adam Guest: Can we all just say a little prayer for the people putting together the highlights package!
Right, let's give you some numbers. I'm struggling to digest them myself.
England added 233 for the first wicket. Yep, 233.
Zak Crawley made 122 and Ollie Pope 108, while Ben Duckett and Harry Brook made their maiden Test centuries. Brook's came from just 80 balls, and he's unbeaten overnight.
The slowest of those four hundreds was from 104 balls, by the way.
Ben Stokes then blitzed 34 not out from 15 balls at the end.
Live Reporting
Ffion Wynne, Um-E-Aymen Babar and Matthew Henry
All times stated are UK
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Latest PostGoodbye
Well, that brings an end to a pretty chaotic but incredible day of Test cricket.
Everyone was intrigued as to how 'Bazball' would fare in Pakistan, but I'm not quite sure we could've predicted 500 in a day.
If you missed any of the action, you can read Stephan Shemilt's match report from a mind-blowing day here.
What on earth is tomorrow going to bring? Join us from 04:30 GMT to find out.
Thanks for joining us!
Post update
Ollie Pope speaking to Sky Sports: "It was the ideal start to the tour obviously. We really listened to what Baz and Stokesy have said. It was an amazing day and I couldn't be happier for Brooky.
"It started from the get go - 14 from the first over. It put them under pressure and they looked like they panicked a little bit. It looked like there wasn't anywhere they could bowl to those two, It was a perfect way for them to set us up for a series."
Asked if he ever thought the side would score 500 in a day, Pope said: "No, to be honest, not necessarily.
"The best thing is everyone has lived by how the two guys up top want us to play. They want us to entertain people. It is not about milestones. It is about putting on show and putting the team in a good position. The fact everyone is so happy to buy into that puts us in a really good place."
Post update
'It is fantastic for English cricket and fantastic for the world game'
Sri Lanka legend Kumar Sangakkara on Sky Sports: "The traditional perspective England had has changed. Cricket has a new landscape and there is opportunity for a new kind of player to graduate from the shorter versions and into the red-ball format, not the way it has been traditionally done. It is fantastic for English cricket and fantastic for the world game."
Post update
Pakistan's bowling figures make for tough reading, and England will certainly be breathing a sigh of relief that they won the toss.
Naseem Shah 0-96 (15 overs)
Mohammad Ali 1-96 (17 overs)
Haris Rauf 1-78 (13 overs)
Zahid Mahmood 2-160 (23 overs)
Agha Salman 0-38 (5 overs)
Saud Shakeel 0-30 (2 overs)
Post update
England batter Zak Crawley, speaking to Sky Sports: "It was a good deck. I felt I played well. It was nice to bat like that after a tricky summer and thankfully I got a hundred today. I was trying be positive - I got lucky on a few occasions. I felt in good touch and am pleased with how I played.
"I was disappointed when I got out. I wanted a few more. I felt like I played alright in the summer at times but couldn't get that score."
Post update
Vic Marks
Former England spinner on BBC Test Match Special
It's an extraordinary display of batting. It wasn't as if they went searching for big shots. Obviously the bowling wasn't perfect but despite all that, it's an extraordinary scorecard with all four centurions playing with such certainty.
It's fantastic for Stokes and McCullum to have this score. It takes an unusual state of mind to just go for it in a strange conditions where they haven't been in so long.
Post update
England batter Ben Duckett after his maiden Test century, speaking to Sky Sports: "Very special. A pretty crazy day to be honest. I think an even crazier build-up to the Test with a lot of us ill in bed. At one point we weren't sure if we were going to get out. For me personally it is a special day, one I didn't think would come around."
On the illness in the build-up: "I didn't move from my bed all day."
On his time out of the side: "I was back at my county trying to score as many runs as I could. I felt I wasn't close to being picked. The real change was looking at this squad at the start of the summer. I went back to playing with more freedom."
On the Stokes-McCullum environment: "I don't think there will ever be a better environment to be involved in. I am sure there will be lots of cricketers desperate to be in this dressing room and I was one of them last summer. They allow you to play your game and play with freedom."
Post update
Jonathan Agnew
BBC cricket correspondent on Test Match Special
It's been a golden day for England. It's the fastest any Test team has ever reached 500.
Zak Crawley set the tone and Ben Duckett back in the side and made 107. Muhammad Ali had a bit of a nightmare in the field.
It's one of those days were it's almost impossible to encapsulate what we've seen.
Post update
Must be quite funny for cricket fans checking the scores when they woke up this morning, expecting to see the day delayed because of England's illness and instead seeing 500 scored in a day.
But spare a thought for Pakistan's bowlers because that was an absolute horror show.
Brook 'has got it all'
England white-ball captain Jos Buttler on Sky Sports speaking about Harry Brook: "You watch him bat in the nets and has a very disciplined method. Even in a T20 game, he will unfurl a perfect forward defence. He has so much game for every format. He has got it all. He loves batting as much as Joe Root."
Get Involved
#bbccricket
Adam Guest: Can we all just say a little prayer for the people putting together the highlights package!
Post update
Post update
Right, let's give you some numbers. I'm struggling to digest them myself.
England added 233 for the first wicket. Yep, 233.
Zak Crawley made 122 and Ollie Pope 108, while Ben Duckett and Harry Brook made their maiden Test centuries. Brook's came from just 80 balls, and he's unbeaten overnight.
The slowest of those four hundreds was from 104 balls, by the way.
Ben Stokes then blitzed 34 not out from 15 balls at the end.
It was absolute chaos from start to finish.
Post update
How's stat?!
Andy Zaltzman
Cricket statistician on TMS
This is the fastest a Test team has ever reached 500.
Close of play - Eng 506-4
Aaaaand breathe.
England close day one on 506-4, and yes, you are reading that right.
A brutal, brutal day for Pakistan's bowlers.
Centuries for Zak Crawley, Ben Duckett, Ollie Pope and Harry Brook.
Carnage.
Post update
Jonathan Agnew
BBC cricket correspondent on Test Match Special
The England supporters won't forget this in a hurry!
Eng 506-4
Oh, I really do feel for Mohammad Ali here. He looks crestfallen.
There's just nothing he can do, as Ben Stokes guides another four over the slips.
Post update
Alex Hartley
Former England bowler on BBC Test Match Special
It's brought up in style too. England today have played very much white-ball cricket with a red ball.