Irwin's lead is just 0.3 seconds as he crosses the line.

As things stand, Irwin would lead the championship by 0.5 seconds ahead of the ifnal race.

Plenty of drama to come in today's first race, however!

O'Halloran makes a move on Ryde into second, a pass which started down the straight and was finished at Druids.

But Ryde hits back into Graham Hill Bend! and now O'Halloran slots back ahead into Surtees!

Great racing!

Everyone is being pretty well behaved at the minute.

Five of the top six can still win the title, but it's Irwin in first, Ryde in second and Bridewell in fourth who are the main men to watch!

Glenn Irwin is trying to make this the world's widest Ducati.

O'Halloran and Ryde are tired together into Paddock Hill, and Bridewell is waiting to pick up any scraps.

Bridewell is now right on the back wheel of O'Halloran in third as they come over the line.

Irwin still leads but there is a train forming behind him. He can't break away here.

Here comes Kyle Ryde into Druids but Irwin holds him off! Bridewell has worked his way up to fourth place and is closing on the top three.

Glenn Irwin is trying to break away but Kyle Ryde is sticking with him.

Bridewell is still in sixth, with O'Halloran, Iddon and Haslam in between them all!

Irwin takes the lead into Druids! Bridewell is down in sixth!

It's a very tentative first few corners!

Away we go!

Jason O'Halloran leads the pack away!

The riders are making their way around the formation lap.

Not long until we get under way.

Twenty laps around the glorious Brands Hatch GP circuit.

Who will come out on top?

Glenn Irwin is looking pretty relaxed on the grid. He's been in a similar position before when lining out at the North West 200 road race in his native Northern Ireland.

Tommy Bridewell admits he is as nervous as he has been.

How much will that be a factor?

Tommy Bridewell, speaking to Eurosport: "I think I'm calmer and smoother. I've got one eye on Kyle as he is riding with no pressure and nothing to lose. That makes it a little bit more enjoyable and easy. I know if I do my job correctly and I carry on the way I have then it will pan out the way I hope."

Glenn Irwin: "I don't expect it to be plain sailing. It's the final day of BSB, there is always a twist. There was a twist yesterday, hailstones weren't in the forecast. I'm really enjoying it. It has been a phenomenal season so far and we have a lot of racing left to do today. I ca't do much more than bring the best version of myself."

Kyle Ryde: "I can [be champion] if I will all the races. If I win all the races but not the championship I would deem it very unlucky. It's all I can do. Whatever will be, will be."

Here's how the riders line up.

1. Jason O'Halloran (Yamaha)

2. Glenn Irwin (PBM Ducati)

3. Kyle Ryde (Yamaha)

4. Tommy Bridewell (PBM Ducati)

5. Leon Haslam (BMW)

6. Christian Iddon (Ducati)

Stephen Watson
BBC Sport NI at Brands Hatch

How are your nerves, everyone?

Glenn Irwin (and his son, Freddie) and Tommy Bridewell are looking pretty relaxed in the garage this afternoon before heading out for the first race of the day.

Once the visors go down, I'm sure it will be a different story.

Image source, BBC Sport

Think Ayrton Senna against Alain Prost or Lewis Hamilton's rivalry with Nico Rosberg in Formula 1, or Valentino Rossi and Jorge Lorenzo's battle in MotoGP.

Tight fights for a championship in motorsport are always exciting, but there is an extra edge when two team-mates are going head-to-head.

That's exactly the case in this season's British Superbike Championship between Glenn Irwin and Tommy Bridewell.

The PBM Ducati team-mates are separated by just 7.5 points before the final round at Brands Hatch and, having already come to blows this season, it's safe to say the gloves are off.

Read more here.

All the talk is about Tommy Bridewell and Glenn Irwin, but you can't discount yesterday's winner Kyle Ryde.

Image source, Ryan Donaldson

Tommy Bridewell extended his lead over Glenn Irwin at the top of the British Superbike standings by three points to 10.5 by finishing third in Saturday's 12-lap sprint race at Brands Hatch.

Irwin came through from 17th position on the grid to take fourth spot.

The race was won by OMG Yamaha rider Kyle Ryde, with Jason O'Halloran second as both riders kept their ambitions of securing the championship alive.

Ryde edged out the McAMs Yamaha rider by 0.015 seconds at the chequered flag.

Bridewell sits on 395 points ahead of Sunday's final two feature races, with Irwin on 384.5, Ryde on 368 and O'Halloran with 347.5.

Stephen Watson
BBC Sport NI at Brands Hatch

History will be made today.

It's sunny but pretty chilly at Brands Hatch as we get ready for two fantastic races.

The crowds have come out in their numbers to witness today's racing. What a spectacle it could be.

Image source, Ryan Donaldson

It's the British Superbike Championship title decider at Brands Hatch!

There has been a huge amount of needle between the two PBM team-mates, Tommy Bridewell and Glenn Irwin.

We've had a war of words and a crash between them, and Kyle Ryde is waiting to capitalise if the team-mates collide once again.

The first race is at 12:45 BST before the final round of the championship at 16:00 BST.

We'll have live updates from both races here.