Elliot Giles, who broke Sebastian Coe's 38-year-old British indoor record in February, qualified fastest for this 800m final ahead of defending champion Daniel Rowden and Kyle Langford. Twenty-year-old Oliver Dustin, the third fastest man in the world this year, also won his heat.

Ben Pattison

Kyle Langford

Jamie Webb

Oliver Dustin

Daniel Rowden

Elliot Giles

Joshua Lay

Finley Mclear

And breathe...

What a race that was. Just the small matter of the men's 800m now. That's coming up in a couple of minutes.

Keely Hodgkinson, winner of the 800m, said in her on-track interview:

"Today was who brought it on the day. It was going to be stacked.

"I'm just happy that I stayed calm and executed my race. The middle distance - something crazy is going on in the water at the minute.

"It's great for the sport. It's fun to be a part of as well as awful."

Mike Henson
BBC Sport at Manchester Regional Arena

There were gasps of astonishment in the stands as teenager Keely Hodgkinson strode past Jemma Reekie and Laura Muir, both faster on paper this season, to defend the title she won last year against a far less-celebrated field.

Hodgkinson is one of the brightest prospects in Britain and, having won the European Indoor title earlier this year, it will be very interesting what she does in Japan.

Image source, Getty Images

That was a huge second lap for 19-year-old Keely Hodgkinson.

She won in 1:59.61, half a second faster than Jemma Reekie's 2:00.12.

That means Reekie and Hodgkinson will take the automatic Olympic spots, while selectors on Monday will discuss whether Laura Muir - who finished in 2:00.24 - is worthy of inclusion.

What a final straight for Keely Hodgkinson!

She steams ahead to take the win, with Jemma Reekie second and Laura Muir third.

Image source, Getty Images

Muir is really pushing round the final bend. She's neck and neck with Reekie and Hadgkinson.

Muir is forced wide round the bend. It was a slow first lap, she should have plenty in the tank.

Jemma Reekie has taken the front in a speedy start. Keely Hodgkinson is right there with her.

Reekie suddenly slows the pace as Laura Muir comes round the side to join the leaders as they take the bell.

Here we go!

The athletes are lined up ready for what should be a thrilling 800m final. Here's who's out there:

Khahisa Mhlanga

Isabelle Boffey

Jemma Reekie

Alexandra Bell

Laura Muir

Keely Hodgkinson

Ellie Baker

Adelle Tracey

Athletes need to have achieved the Olympic qualifying standard and finish in the top two in Manchester to guarantee themselves a place in Tokyo.

For the women's 800m, the time needed is 1:59.50 and there is no shortage of athletes who have already got that.

Athletes who do not guarantee their place today can still get in via a selection meeting on Monday before the team is announced on Tuesday.

Medallists at the British Championships also get a bonsai tree, so that's a nice bonus if you miss out on the whole Olympics thing.

We don't have long to wait before a very competitive women's 800m final.

Jemma Reekie is the fastest Briton this year and ran 2:01.46 to win her heat.

Laura Muir - who is hoping for selection in both this and the 1500m - got round in 2:05.41.

"I think I can make that Olympic final in the 800m and once there, anything can happen," she said.

"So rather than put all the eggs in one basket, I'd rather spread them out a bit."

Alexandra Bell and teenage European indoor champion Keely Hodgkinson will also be on the startline for this one.

Image source, Getty Images

14:50 Women's 800m

15:00 Men's 800m

15:20 Women's 100m hurdles

15:30 Women's 5000m

16:15 Men's 3000m steeplechase

16:35 Men's 200m

16:46 Women's 200m

Here's what we've got to look forward to this afternoon. Like I said, jam-packed...

We've arrived at the final day of a jam-packed British Championship schedule.

Places at the Tokyo Olympics are still up for grabs and the sun is even occasionally shining in Manchester.

Hopefully we're in for a good one.

Image source, Getty Images