Matthew Hudson-Smith sets European record and world-leading time of 43.74 seconds in 400m
Keely Hodgkinson wins 800m in world-leading and British record 1:54.61
Noah Lyles wins 100m in PB 9.81 seconds with GB's Louie Hinchliffe fourth and Zharnel Hughes sixth
Dina Asher-Smith third and Daryll Neita fourth in 200m won by American Gabby Thomas
GB women's 4x100m relay squad set world leading time of 41.55 seconds
GB's Molly Caudery third in strong pole vault competition
Heptathlete Katarina Johnson-Thompson fifth in long jump
Capacity 60,000 fans watch GB's Olympic stars at London Diamond League
Women's long jump
Olympic champion Malaika Mihambo is leading the women's long jump after starting with a distance of 6.87.
Brit Katarina Johnson-Thompson's first jump of 6.54 drops her into third place.
Men's 3,000m race
We're under way in the men's 3,000m race with five Brits taking to the track.
Will Barnicoat, Ellis Cross, Scott Beattie, Jack Rowe and Rory Leonard are the men in the British colours.
Women's long jump
Huge cheers around the London Stadium as home favourite Katarina Johnson-Thompson is out on the track ready for the start of the women's long jump.
Men's 400m hurdles
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
Dos Santos just easily pulled away.
We need to see how he will do against Rai Benjamin and Karsten Warholm - the pressure is going to be on in Paris.
Women's pole vault
The first shake of the head from Molly Caudery as she fails with her first attempt at 4.75m.
She'll have two more tries to get on level terms with Canada's Alysha Newman and Australian Nina Kennedy.
Men's 400m hurdles
Brazil's Alison dos Santos eases his way over the line with 47.18.
Jamaica's Roshawn Clarke battled hard for second with 47.63 as Qatar's Ismail Doudai Abakar took third with 47.72.
Karsten Warholm will be the favourite at the Olympics but the Brazilian has a win over him already this season.
Men's high jump
Qatar's Mutaz Essa Barshim will not be taking on the men's high jump today.
Pictures have shown the Olympic champion on track sat in his tracksuit and cap looking relaxed.
Women's pole vault
Canadian Alysha Newman piles the pressure on Molly Caudery after easing over the bar at 4.75m.
Can Caudery respond?
Women's 400m hurdles
Brit Amber Anning was the best of the rest as she crossed the line in 49.63 while Laviai Nielsen ran a new PB of 49.87 to finish fifth.
Victoria Ohuruogu also ran a PB to finish seventh with 50.76.
Women's 400m hurdles
Nickisha Pryce was being chased down from Poland's Natalia Kaczmarek as she ran a PB of 48.90.
In third was Dutchwoman Lieke Klaver with 49.58.
Women's 400m race
Jamaica's Nickisha Pryce runs a world lead time of 48.57 to take the win. Incredible stuff!
Women's 400m race
The action never stops, does it?
Now we've got the women's 400m race with three Brits in the field.
Laviai Nielsen, Amber Anning and Victoria Ohuruogu are donning the GB colours.
4x100m relays
Harry Poole
BBC Sport at London Stadium
Image source, PA MediaHuge cheers greeted the news that the women's 4x100m quartet matched the British record in taking that dominant victory.
That bodes very well indeed, especially considering Dina Asher-Smith and Daryll Neita likely have one eye on the women's 200m less than 90 minutes away.
It's an incredibly strong squad, and one which has every chance of earning GB's third successive Olympic medal in the event.
Evidently, however, there's work to do for the men. That looked very, very good for 300m, but a breakdown in communication between Richard Kilty and Reece Prescod will need to be reviewed.
In terms of positives, Louie Hinchliffe's first relay run-out looked very promising, didn't it? Everyone here will be excited to see what GB's rising sprint star can do in the 100m later this afternoon...
Image source, Getty ImagesMen's 4x100m relay
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
They'll have to go back to the drawing board to ensure they nail that handover come the Olympic Games.
Men's 4x100m relay
Japan's season best time of 38.07 saw them cross the line in first as Australia were within touching distance after running 38.31 - just 00.01 of a second faster than Great Britain two.
Couldn't be any closer!
Men's 4x100m relay
Great Britain were flying around the bend but Reece Prescod couldn't grab hold of the baton in time.
A real shame after it seemed the first British team were on their way to victory.
Great Britain two, however, ran a great time of 38.32 to take third place.
Men's 4x100m relay
Japan take the win!
Men's 4x100m relay
Who's ready for more relay action? I know I am!
The men are being introduced on the track as Great Britain once again have entered two teams.
All eyes on Louie Hinchliffe?
Women's pole vault
Image source, Getty ImagesThe women's pole vault is well under way and Briton Molly Caudery going well as she sits joint first alongside American Sandi Morris and Canada's Alysha Newman on 4.65m.
Caudery has been flawless so far as she gears up for her first appearance at the Olympics.
Women's 4x100m relay
What a superbly assured run that was from Great Britain one as they equal the national record.
Let's not forget about the second Great Britain team as they also ran a fine race to finish third with 42.46.
In between the two British teams were France with a season best time of 42.10.