So that's just about it from League One. We said at the start that there would be joy for some, and heartache for others.

Joy for MK Dons, heartache for Crawley, Leyton Orient and Notts County.

Thanks for joining us.

MK Dons, who have only been in existence since 2004, can now prepare for their first-ever season in the Championship.

Karl Robinson could not have asked for a more emphatic performance from his players as they went 4-0 up against bottom side Yeovil Town in the first-half before running out 5-1 winners.

It was a different story for Preston North End who simply could not break down a resilient Colchester defence as they slumped to a 1-0 defeat.

The Lilywhites had not lost since a 2-1 defeat to Crawley at the end of January, as they went on an 18-game unbeaten run. Today was not the day they wanted that run to come to an end, but they were up against a determined Colchester side who did everything they could to stay in League One.

Image source, Getty Images

Colchester manager Tony Humes tells Sky Sports: "We said at the outset that it was important we did our job. Once we got the goal, we started looking at where we were. Credit to the players, they got us out of the situation."

BBC Radio 5 live sports extra's Adam Cottier has been commiserating with the Preston fans:

"To be honest, we weren't good enough on the day. Colchester took their chance and it's been the same old North End.

"We often let the fans down and we've dropped too many points, in my opinion, against poor sides this season. It wasn't to be our day again unfortunately."

It's Chesterfield in the play-offs for Preston, while Sheffield United will play Swindon.

What a dramatic second-half of twists and turns in the League One relegation battle but ultimately it is heartbreak for Notts County, Crawley and Leyton Orient.

Notts County led at Gillingham until the 88th minute but three late goals from the hosts condemned them to League Two.

Crawley were also in front against Coventry but James Maddison's last-minute goal saw them fall to defeat.

There was more drama at the County Ground where Leyton Orient were 2-0 up against Swindon, but were eventually pegged back to draw 2-2.

It was a different story for Crewe, Colchester and Coventry who all survive on a frantic last day in League One.

Former Bury and Burnley midfielder Jamie Hoyland on BBC Radio 5 live sports extra: "I feel really sorry for the fans. Preston can still do it through the play-offs but they owe the manager and the fans something now. They've thrown it away today.

"They've let their supporters, the club and Simon [Grayson] down. He's taken all the pressure off them and when he's needed them today, they've not produced the goods."

MK DONS WIN PROMOTION TO THE CHAMPIONSHIP.

COLCHESTER ARE SAFE. PRESTON MISS OUT ON AUTOMATIC PROMOTION.

That's it for Notts County, Luke Norris gifts Gillingham their second goal in the space of just a few minutes to consign the Magpies to relegation.

NOTTS COUNTY, CRAWLEY AND LEYTON ORIENT DOWN AS IT STANDS.

And Orient's chances of staying up are effectively over now as Andy Williams nets an equaliser from the spot for Swindon.

NOTTS COUNTY, CRAWLEY AND LEYTON ORIENT DOWN AS IT STANDS.

Notts County are, barring an absolute miracle in added time, relegated to League Two as Brennan Dickenson notches what could be a late winner for Gillingham.

NOTTS COUNTY, LEYTON ORIENT AND CRAWLEY DOWN AS IT STANDS.

Crawley almost certainly down now as Coventry snatch a late winner through James Maddison.

NOTTS COUNTY, LEYTON ORIENT AND CRAWLEY DOWN AS IT STANDS.

BBC Sport's Ged Scott at Gresty Road: "Word of Gillingham's equaliser against Notts County means it's suddenly party time again at Crewe. They're all grinning like Cheshire cats once more!"

It's all Colchester now. Dion Sembie-Ferris jinks his way into the box and unleashes a fierce shot but it's blocked and cleared away. What do Preston have left? They need to find two goals in stoppage time or it will be the play-offs.

Bristol City lead Walsall 7-2, and it's a hat-trick for centre-back Aden Flint.

Click here for live scores from League One.

It's heartbreak for Notts County as John Egan heads home to level for the hosts, and to potentially send the Magpies down to League Two.

NOTTS COUNTY, LEYTON ORIENT AND CRAWLEY DOWN AS IT STANDS.

Colchester go so close to doubling their lead. Substitute Sammie Szmodics races through and shoots, but Sam Johnstone makes a wonderful save with his feet. How important will that save be?

Former Bury and Burnley midfielder Jamie Hoyland on BBC Radio 5 live sports extra: "There should be enough experience on that pitch to not let going a goal down affect them. Some of the players haven't stepped up to the plate when they've needed to, which has been disappointing.

"I've said all along about how they need to grab hold of this situation and I can't see anybody from Preston doing that. There's lads showing body language feeling sorry for themselves. You've just got to go on and keep trying - anything can happen."

Into the closing few seconds of our games. Still time for it to change...

And a huge roar rings around Milton Keynes as the home fans get word of George Moncur's vital goal for Colchester United against promotion rivals Preston North End. MK Dons heading for the Championship as things stand.