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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 a final squad on 19 July.

1925: Steve Backley passes on his final throw but wins the title.

1920: Marlon Devonish jumps the gun in the 200m final. Second time lucky and they are off. Chris Lambert crosses in 20.94 secs, into a slight headwind, to win from Christian Malcolm. Dwayne Grant comes home third but pulls a hamstring as he crosses the line.

1918: Backley again peppers the 80m mark with his fifth attempt of 79.19m, but remains short of the automatic qualifying target.

1909: Joice Maduaka wins the 200m to deny Abi Oyepitan a sprint double. But the selectors have a headache as Maduaka finished outside the qualifying time.

1904: Jade Johnson closes the long jump with a jump of 6.54, but wins the title with her first jump of 6.72m. Kelly Sotherton misses out on the Olympic qualifying standard.

1900: Backley breaks through the 80m barrier, but his season's best effort of 81.25m is still short of the Olympic qualifying target.

1858: Helen Clitheroe sets the early pace in the women's 1500m. She leads until the bell when Hayley Tullett hits the front. Tullett wins and Lisa Dobriskey gets second ahead of Clitheroe on the line.

1855: Denis Lewis pulls out of the long jump, while Jade Johnson and Kelly Sotherton continue to be frustrated by red flags for foul jumps.

1852: Chris Bolt gets fed-up with a super-slow men's 1500m and hits the front. The gamble does not pay off and he trails in last behind Chris Mulvaney who wins in a time of 3.50.15. Pre-race favourites James Thie and Tony Whiteman come home in fifth and 11th respectively.

1847: Darren Campbell pulls out of the 200m final with a rib injury.

1840: Chris Rawlinson, who has already run inside the qualifying time, maintains his blistering form in the 400m hurdles before taking his foot off the gas and cruising to victory in a time of 50.04 secs.

1835: Backley's back on course with a throw of 79.16m to take the lead from Nick Nieland.

1832: Katie Jones comes home ahead of Nicola Sanders in the 400m hurdles to record a season's best time of 58.27 secs, but her effort is outside the Olympic qualifying standard.

1822: Justin Chaston comes home first in the 3000m steeplechase and books his place in the team for Athens.

1815: Steve Backley has a shocking start in the javelin when he throws outside the sector, landing close to the athletics track, and records a no-throw.

1810: Ben Challenger win the AAAs high jump title but his jump of 2.23m is outside the Olympic qualifying standard.

1802: Jade Johnson is delighted when she nails her first attempt in the long jump with a leap of 6.72m and qualifies for the Olympics.

1800: Nathan Douglas is another surprise winner in the men's triple jump.

The Oxford athlete lands straight on the 'A' Olympic qualifying mark of 16.95m to book his place in Athens.

Larry Achike and leading British contender Phillips Idowu had earlier pulled out of the event.

In some of the other field events, Mick Jones clinches the hammer title with his second round throw of 72.04m ahead of Andy Frost.

And Julie Dunkley throws a season's best of 16.03m to win the women's shot put - but it is well short of the qualifying standard.

1747: Chris Lambert shows he is in fine form, winning the first heat of the men's 200m in 20.58 seconds ahead of Julian Golding.

Christain Malcolm takes the second heat in 21.24.

Darren Campbell eases to the third and final heat in 21.05 ahead of Marlon Devonish. But the Sale Harrier appears to injure his back during the race.

1740: Sam Ellis weaves his way through the field from the bend to steal the 800m in one minute, 49.20 seconds.

Ricky Soos pips Joel Kidger at the line to grab the second spot while 1500m specialist Michael East is pushed back into fifth.

East had hoped to contest a 1500m and 800m double in Athens.

1729: Christine Ohurougu delivers a surprise in the women's 400m, clocking 50.98 to seize the title for the first time.

Scotland's Lee McConnell led the race but was edged out into second with Helen Karagounis third.

1722: Tim Benjamin surges through over the last 30m to establish himself as the number one 400m runner in Britain.

The 22-year-old clinches the title in a stunning 45.58 seconds ahead of Daniel Caines with Sean Baldock third.

American-born athlete Malachi Davis finishes in fourth so might have to pin his hopes on a relay team.

1708: Kelly Holmes runs a superb 800m to pick up her seventh AAAs title in one minute, 59.39 - inside the qualifying standard.

Jo Fenn takes second in 2:01.28 with Glasgow's Susan Scott third.

1655: Tim Thomas soars to 5.45m to clinch the men's pole vault but the Welsh athlete is still 20cm short of the qualifying standard.

Scott Simpson takes second while Christian North set a season's best in third - both vaulted 5.15m.

1642: 100m title holder Abi Oyepitan comfortably wins the first heat of the women's 200m in 23.98 seconds.

Susan Deacon crosses the line first in heat two in 24.32 while Joice Maduaka eases through to the final in the third heat in 23.71.

1635: Chris Thompson is a clear winner in the men's 5,000 with a time of 13 minutes, 42.10 seconds.

Spencer Barden records a season's best to take second with Christopher Davies third.

1638: Mick Jones takes the lead in the men's hammer with a throw of 71.42m in the second round.

1624: Tina Brown takes the women's 3,000m steeplechase title with a time of 10 minutes, 13.19 seconds.

The middle distance runner only tried out the event at the end of last year but is clearly suited to it.

Jo Ankier and Sonia Thomas both set personal events to finish second and third respectively.

1611: The men's triple jump final gets under way at the Manchester Regional Arena.

But Phillips Idowu - who is Britain's top performer this season - is ruled out on the advice of the British doctors with a hamstring injury.

1600: Basildon 21-year-old Kim Wall seals the women's 400m 'B' title with a time of 54.01 seconds.

1551: Former European champion Du'aine Ladejo wins the 'B' final of the men's 400m in a season's best time of 46.79 seconds.

Jamie Baulch and Matt Elias did not finish in the overcast conditions in Manchester.

1546: Niobe Menendez crosses the line first in the women's 5km walk with a time of 23 minutes, 53.75 seconds.

1525: The King twins make it a one-two for Colchester Harriers in the men's 5km walk.

Dominic King sets a new championship and personal best of 20 minutes 11.35 seconds to finish ahead of brother Daniel who also pbs with 20:47.19.

1515: Welsh athlete Philippa Roles gets the second day of action under way by claiming the women's discus title.

The Sale Harrier threw 58.57m to clinch the British title but was still short of the Olympic qualifying 'A' standard of 61m.

Shelley Newman misses out on her sixth AAAs title, settling for second with 55.44m.

Kara Nwidobie throws a personal best of 52.78m in third.