Andrew Pozzi - part of Team GB for Rio - wins in a personal best of 13.19 seconds.

David Omoregie - who missed out on selection for the team - is second in 13.48.

Aries Merritt was well off the pace, clattering the last hurdle and finishing seventh. He won't make the final.

Image source, Getty Images

Olympic champion Aries Merritt is the big draw in the field. He won't be at Rio to defend his title after narrowly missing out in the notoriously brutal US trials.

But having been in them at all was impressive after undergoing a kidney transplant less than a year ago. 

His season best is 13.22. Britain's David Omoregie's is only 0.03 seconds behind.

Andrew Pozzi also goes for Britain. The first three are guaranteed their place in the final.

James Dasaolu: "That race shows there's really great strength from both teams."

James Elllington: "We pushed a bit further than we did at the Europeans, the depth we've got now is amazing."

CJ Ujah: "We're still a bit tired from yesterday, so there's definitely room for improvement."

Adam Gemili: "We were close to the record and pushing for it but what better place to race like that than in front of your home crowd."

Image source, PA

Darren Campbell
2004 Olympic relay champion on BBC Radio 5 live

Confidence and team spirit is so important and this will give them it going to Rio. A medal is a real prospect. You have to believe you can win gold because other teams can drop batons.

This team is more than capable of breaking our record. Some takeovers looked a little bit safe but it shows the quality when the B team runs that fast. We have two strong teams.

Colin Jackson
Two-time world 110m hurdles champion on BBC TV

They've destroyed the field haven't they? They've put themselves in real contention for a strong medal now. And there are strong choices for the Great Britain team.

Wow. That was a sight to hearten Britain's fans.

The two quartets pushed each other all the way to the line, well clear of the rest.

The A team won in the end, coming home in 37.78. That is a world-leading time for the year and only 0.05 away from the British record.

The B team were only 0.03 behind.

Some serious options.

There are two British quartets running.

The A team are James Dasaolu, Adam Gemili, James Ellington and CJ Ujah.

The B team are Richard Kilty, Harry Akines-Aryeetey, Danny Talbot and Ojie Edoburun.

They are competing for spots in the final four for Rio.

Look out for a Jamaican team that includes Michael Frater, but no Usain Bolt.

Jessica Ennis-Hill and Katarina Johnson-Thompson go head to head to tune up their long jump ahead of Rio.

British team-mate and world silver medallist Shara Proctor is the class of the field though.

Mo Farah has just completed a tour of the track standing through the sunroof of a sponsored car, taking video on his mobile phone.

He has parked up and now it is time for the men's 4x100m relay...

Image source, Getty Images

14:17 - women's long jump - Ennis-Hill, Johnson-Thompson and Proctor

15:15 - women's 100m heats - Fraser-Pryce, Asher-Smith, Philip

15:56 - men's 110m hurdles final - Merritt

16:04 - women's 800m - Sharp

16:15 - women's 200m - Schippers, Jodie Williams

16:26 - women's 100m final - Fraser-Pryce, Asher-Smith, Philip

16:36 - men's 5,000m - Farah

Farah, Ennis-Hill, Asher-Smith, Fraser-Pryce, Schippers - plenty of star names competing in today's Diamond League action.

But of course it was Usain Bolt that everyone wanted to see back at the Olympic Stadium.

And the Jamaican, as he did three times in 2012, duly delivered on Friday night...

That is the day's IPC action done.

How did the British big guns look?

Well, Libby Clegg's superb bend run registered a new T11 200m world record. 

Richard Whitehead will surely be looking to go sub 23 seconds after establishing a new world landmark in the T42 200m.

Sophie Hahn looked untouchable in the T38 100m as did Hannah Cockcroft in the T34 100m.

But there were defeats for David Weir and Jonnie Peacock. Still tweaks to be made before they take to the track in Rio.

Image source, PA

Jaryd Wallace, speaking to More4: "Rio is the big race coming up, so it's great to get back in a big stadium and race against these guys. I know how hard I work and so by default I know how hard he (Jonnie Peackock) works too. I've got absolute respect for him."

Jonnie Peacock: "It's not about my start this year. It's about my top speed. For me I'm just trying to get consistency. And when this guy puts on the pressure, it's hard to get back. Jaryd is a great competitor and a really great guy too. If there's anyone I'm going to get beaten by I'm glad it's him."

Allison Curbishley
BBC athletics expert on Radio 5 live

That really has whet the appetite for what's to come in Rio. Peacock is still the best in the world this year, but Wallace kept relaxed. I don't think I've seen anyone more relaxed; he looks like he's heading off to the beach to hang out with his surf dudes. 

There's been so little between these two this season, but that was won at the start.

Jonnie Peacock was straining hard, eyeballs popping, sinews tight as piano wire, but he could not make up the difference after a sluggish start on American Jarryd Wallace.

Wallace wins in 10.80 with Peacock second in 10.87 and Germany's Felix Streng not far off in 11.06.

Image source, Getty Images

BBC One

Our TV colleagues are continuing their catch-up of the best of Friday night's action.

The standout performance from a British athlete was Laura Muir's victory in the 1500m.

The Scot broke Dame Kelly Holmes' British record in the process.

The headline act. Paralympic champion Jonnie Peacock takes on the American trials winner and former world record holder Jarryd Wallace.

Wallace won last year’s Parapan Am Games with a new world record of 10.71 seconds (which was later beaten by compatriot Richard Browne at the Worlds in Doha while Peacock is the fastest in the world this year with a time of 10.68secs.

This will be the chance to set down a marker ahead of their reunion in Rio.

Sophie Hahn, speaking to More4: "I just want to run fast. It's a great track, home soil, home support, I just wanted to do my best. I've trained hard and hopefully I can win gold in Rio. A world record would be nice..."

The 19-year-old Sohie Hahn roars away from the rest. A terrific run. Home and hosed in a lightning 12.66. She is just a shade away from her own world record.

Great Britain's Kadeena Cox is the best of the rest in 13.17.

Image source, Getty Images

Allison Curbishley
BBC athletics expert on Radio 5 live

Sophie Hahn, what a special talent this lady is. To think in this Olympic cycle we've found such a little gem - and she really is tiny - she'll be one everyone will be looking to to take gold in Rio.

Britain's world and European champion Sophie Hahn, who has already been selected for Rio, will go off as favourite and could look at beating her own world record of 12.60.

The 19-year-old is locked and loaded in the blocks...