The top two athletes in each event will be automatically selected - but only if they also achieve the Olympic qualifying standard.

In some events, such as the men's 100m, there is also a third place on the squad up for grabs at the discretion of the selectors. Great Britain will unveil its final squad on 19 July.

2030: Carl Myerscough fails to add the discus crown to his shot victory, finishing just six centimetres behind Emeka Udechuku, who produced his best throw of the season - 61.60m - to retain his title.

1957: The final track action of the first day sees Chris Mulvaney clock three minutes, 46.52 seconds in the first heat of the 1500m.

Cardiff's James Thie, Nick McCormick and Gareth Price grab the automatic qualifying places from the opening heat.

Tony Whiteman sets a season's best time of 3:45.77 to cross the line first in heat two with Michael Skinner, Chris Warburton and Andrew Baddeley also going through.

1927: Joel Kidger storms to a season's best of one minute, 48.31 seconds to win the first heat of the men's 800m.

Lincolnshire athlete Neil Speaight also goes through to the final in second place.

Ricky Soos kept his title defence on track, winning the second heat in 1:47.90 - a season's best.

Michael East, who is bidding for an 800m and 1500m double in Athens, wins heat three in 1:46.92.

James McIroy clinches the fourth heat in 1:50.69.

1910: Goldie Sayers successfully defends her javelin title with a personal best throw of 60.85m - well within the Olympic standard.

National record holder Kelly Morgan was second with a season's best of 58.98m.

There was some good news for Denise Lewis, who threw a personal best of 51.48m as part of her tune-up for the heptathlon.

1901: Catherine Murphy is through to the final of the women's 400m hurdles after winning the first heat.

The British indoor champion clocked 52.58 seconds to edge a resurgent Donna Fraser into second place.

Scotland's Lee McConnell won the second heat in 52.03 seconds while Carey Marshall set a personal best of 52.72 to take second.

1837: Katie Jones, Nicola Sanders and Susan Williams all reach the final of the women's 400m hurdles by winning their heats.

Natasha Danvers-Smith again missed the AAAs championships - this time because she is expecting her first child.

1826: Carl Myerscough defends his shot put title with a throw of 20.84m.

The Lancashire athlete cannot go to the Olympics after serving a two-year drugs ban so Marcus Goldbourne and Neil Elliot - second and third respectively - could get the nod, although they are well short of the qualifying mark.

1800: British number one Chris Rawlinson wins the first heat of the men's 400m hurdles in a time of 50.77 seconds.

Robert Lewis takes the second heat in 51.51 and Eddie Betts the third in 52.20.

1755: Zoe Brown soars to the women's pole vault title with a height of 4.15m - the Olympic standard is 4.40m.

1732: World indoor 60m champion Jason Gardener wins a tight 100m in 10.22.

Darren Campbell comes storming through in the last metres to take second in 10.23 ahead of Mark Lewis-Francis, who false-started.

1720: Abi Oyepitan claims the women's 100m sprint title, winning in 11.54 seconds.

Joice Maduaka, who had led from the gun, is beaten into second place with Emma Ania setting a season's best of 11.65 in third.

1712: Chris Tomlinson wins his first British long jump title with a leap of 7.84m.

Darren Ritchie is second with a jump of 7.76m with Nathan Morgan third after reaching 7.71m.

Selectors could have a headache as Tomlinson still has not reached the qualifying standard while Morgan already has it under his belt.

1705: Lorraine Shaw claims her fifth national title in a row in the women's hammer.

The 36-year-old set a new championship record of 68.11m in the second round.

Shirley Webb threw 64.67m at her fifth attempt to hold onto second spot.

1701: Sarah Claxton puts in a smooth performance to clinch the women's 100m hurdle crown in 13.21 seconds ahead of Diane Allahgreen.

1647: Rob Newton wins the men's 110m hurdles in 13.72 seconds with Paul Gray second.

1643: Jonathan Moore jumps 7.68m as the final of the men's long jump gets under way.

Sale Harrier Darren Ritchie, who has jumped over 8m this season, reaches 7.76m in the first round.

1631: Lorraine Shaw sets a championship best 68.11m in the second round of the hammer.

1626: Welshman Christian Malcolm wins the first of three men's semi-finals to reach the final in 10.43 seconds.

Mark Lewis-Francis holds off the challenge of Darren Campbell to clinch heat two in 10.31 seconds with home favourite Campbell clocking 10.39.

Scotland's Nick Smith wins heat three in 10.36 ahead of world indoor 60m champion Jason Gardener.

1601: Abi Oyepitan reaches the final of the women's 100m as she takes the first semi in 11.64 seconds - slightly slower than her run in the heats.

This time British number one Joice Maduaka goes faster as she clocks 11.58 to go through to the final.

1557: Catherine Berry claims the women's 5,000m crown, winning in a time of 15 minutes, 45.28 seconds.

The Olympic qualifying standard is still a long way out of reach at 15:08.70.

1517: Susan Jones picks up her fourth straight British high jump title with a season's best height of 1.89m - but it is still six centimetres short of the Olympic standard.

1507: Jo Fenn has little trouble reaching the final of the women's 800m, winning the first heat in two minutes, 05.75 seconds.

Susan Scott continues her fine form, clocking 2:03.07 in the second heat.

World 800m silver medallist Kelly Holmes sets the pace, however, winning the final heat in 2:01.62 after being pushed hard by Joanna Ross, who ran a personal best with her second spot.

1455: Rob Newton sets a season's best time of 13.62 seconds to qualify for the final of the men's 110m hurdles.

Allan Scott powers to a new personal best of 13.78 to cross the line first in heat three while Paul Gray wins his heat in 13.81.

1445: Michelle Griffith claims the AAAs triple jump crown with a leap of 13.43m.

But her winning mark is short of the Olympic standard of 14.20m so she will have to improve in the next few weeks to book her place in Athens.

1400: Unknown quantity Malachi Davis wins the first heat of the men's 400m in 46.10 seconds.

The American-born athlete flew in to compete in Manchester after being awarded a British passport just three days ago.

Welsh runner Jamie Baulch finishes disappointingly in fourth place.

Daniel Caines looks relaxed as he books his place in the final, winning the second heat in 46.10.

Sean Baldock clocks 46.04 as the winner of heat three but Tim Benjamin sets the fastest time so far taking heat four in 45.70.

Iwan Thomas was clearly still struggling with an Achilles injury as he finished in fourth with Du'aine Ladejo third.

1310: Darren Campbell clinches the first heat of the men's 100m in a time of 10.33 seconds - his season's best mark is 10.21.

Jason Gardener, who is still recovering from a hernia operation, also goes safely through in heat two in 10.35.

Mark Lewis-Francis powers away from the field to win the next heat comfortably in 10.42.

Cardiff's Christian Malcolm goes fastest in the heats with a season's best time of 10.28.

Scotland's Nick Smith continued to show his potential, clocking 10.36 to lead home the final group of runners.

1300: Belgrave Harrier Rachel King progresses to the final of the 100m hurdles, clocking 13.31 seconds.

Diane Allahgreen crosses the line first in heat two in 13.39.

Denise Lewis, who is trying to fine tune her individual disciplines ahead of her heptathlon bid, fails to qualify for the 100m hurdles final after finishing third.

1245: British number one Joice Maduaka reaches the semi-finals of the women's 100m with a time of 11.67 seconds.

But the 30-year-old was out-paced by Abi Oyepitan, who set the fastest time of 11.57 in the heats.