Kent are now six down against Gloucestershire with Ajeet Singh Dale picking up his fourth of the innings.

He claims the scalp of Jaydn Denly who played on to his stumps for 39 from 51 balls - making him his side's top scorer today so far. They are currently on 159-6.

Glamorgan have hit back well against Northants after lunch and have turned things around with four wickets in just over 10 overs including that of visiting skipper Luke Procter who made 61.

50 for Lammonbypublished at 14:49 British Summer Time

14:49 BST

Somerset 163-3 v Sussex

Well batted, Tom Lammonby. Since coming in at 21-1, Lammonby has anchored this Somerset innings very well.

He moves onto 50 and that's a second half-century of the season.

Somerset are ticking along quite nicely.

50 partnershippublished at 14:48 British Summer Time

14:48 BST

Durham v Notts 195-4

James Minto returns to the attack and Haseeb Hameed flashes hard and sends a lifting ball through deep backward point for four.

The Notts captain drives a little airily through the covers at the next ball but it's safe and goes for back-to-back boundaries.

Kyle Verreynne gets in on the act as a dab into the ground somehow races away for another four which brings up the 50 partnership for the fifth wicket off just 53 balls.

Not Minto's over as his final ball is edged by Hameed through the slips for four. The over goes for 18.

Fine counter-attacking from Notts.

Yorkshire skipper Jonny Bairstow is taking a no-nonsense approach to this today.

He lifts one over point for another four off Jordan Clark and then drives one down the ground for four more.

Bairstow has raced onto 40 off 41 balls.

Middlesex's first innings has seemed like a constant re-building mission after going from 0-1 to 19-3 inside the first seven overs.

They've managed to scrap their way to 124-5 since then.

Ben Geddes and Jack Davies have put on 23 runs since Ryan Higgins fell for 44. Can they repair the damage that has already been done?

Mark Church
BBC Radio London commentator

What a delivery from Nathan Smith!

His first wicket for Surrey, I don't know what you do if you're Adam Lyth there, it has come from nowhere. He did everything in his power to drop the hands but it brushed the glove.

That was an international delivery, from an international player.

Ben Brown livens up a quiet spell at Edgbaston as Ed Barnard drops a fraction short of a length and the Hampshire batter pulls him for four.

It's the skipper's fifth boundary and takes him to 22.

Even the schoolchildren have gone quiet.

BBC Sounds

You can follow every ball of every County Championship match with the BBC this summer.

Along with our live text coverage our BBC Local Radio and 5 Live Sports Extra commentary teams will be out in force to ensure you do not miss a thing.

You can listen via the BBC Sport website and app but also on most smart speakers - just ask BBC Sounds to play the game you want but also state the day as well.

For example, ask BBC Sounds to 'Play Surrey against Yorkshire, day one'.

Martin Emmerson
BBC Radio Newcastle

Durham only took one wicket in the morning session, as Notts reached the lunch break on 133-1.

That was from 29 overs of play. But by the time they reached the end of the 35th they were four down!

Codi Yusuf had Freddie McCann caught down the leg side by the keeper on 26. In his next over he bowled Joe Clarke for one.

Brydon Carse then showed great reactions to remove Jack Haynes for one. He was caught and bowled from a delivery which came back off the toe of the bat.

Carse has been bowling well in his first game of the season and in the last over he nearly had Haseeb Hameed three balls in a row.

The first of them whistled past off stump. There was little in it. The next two were played onto the back foot and ricocheted away to safety.

150 up for Somersetpublished at 14:31 British Summer Time

14:31 BST

Somerset 150-3 v Sussex

Tom Lammonby picks up a single for Somerset to take them onto 150 at Taunton.

An entertaining day so far and it's still very much in the balance.

Image source, Getty Images

A huge wicket for Derbyshire as Blair Tickner has Marcus Harris caught at slip by Wayne Madsen for 45.

Lancashire may have struggled this season, but Harris has been filling his boots.

He fell five short of his eighth half-century of the season in his first match as captain.

The Australia batter came to the crease with his side 11-2 and shared 103 with Luke Wells for the third wicket.

Harris already has two centuries to his name this campaign and was averaging 88 before this match.

Matty Hurst is not hanging around - he's hit two fours and has moved to 10 off just five balls.

Adrian Harms
BBC Sussex

Image source, Getty Images

It's an excellent catch and a good bit of bowling.

He will very disappointed with that, James Rew looked in excellent touch.

Somerset are suddenly 149-3.

It's been a bit of a tough grind for Surrey bowler Matt Fisher so far today. Jonny Bairstow takes another two boundaries off Fisher's 11th over and that takes him swiftly onto 22.

Mark Church
BBC Radio London commentator

Bairstow looks up for this at the moment.

With the big crowd and the lovely day, he will be enjoying this.

He's done it at international level, so this will be fun for him.

James Rew seems determined to get to 50 for Somerset before Tom Lammonby at the other end.

He flicks one off his legs and it trickles towards the rope but doesn't quite make it, though they're able to run three.

Rew has flown onto 42 and gone ahead of Lammonby on 41.