Leicestershire have their sixth wicket at Hove, with Sussex's Danny Lamb caught at second slip off Scott Currie. The home side are 263-6, but John Simpson is still there on 104.

Another has gone at Sophia Gardens, with Northamptonshire's Lewis McManus lbw to Andy Gorvin for 19. The visitors are 195-7 against Glamorgan and Gus Miller has joined Liam Patterson-White.

Middlesex are 187-5 in the 62nd over against Derbyshire after Alex Thomson removed Nathan Fernandes for six, caught by Wayne Madsen.

Danny Briggs bowls a short ball to Keith Barker, who dabs the ball away for a single and keeps the strike.

The batters trade singles for the first couple of balls, nudged into the leg side.

Just the two from the over and Briggs will bowl the last one before the tea break.

Liam Dawson flicks Dan Mousley into the on side for one and Keith Barker smashes the next ball over mid on for six!

Lovely shot. Forward with a full swing of the bat.

In the afternoon session Nottinghamshire have added 109 for the loss of four wickets so it's fair to say it's been Somerset's session, thanks mainly to Kasey Aldridge.

Shot! Migael Pretorius drops short and Calvin Harrison pulls the ball from just outside off stump through mid wicket for four.

He was on a single off 21 balls oat one point.

Harrison is forward to Leach to block out the last over before tea.

Somerset have bossed most of the session, in which they took four Notts wickets for 109.

But they're still resisting with Harrison now 16 not out and Olly Stone unbeaten on 12.

Alex Lees has just notched his 26th century in first-class cricket, but had the keeper not dropped a ball off Simon Harmer earlier in the session, things may have been a lot different.

Lees was on 77 when he left his crease and missed the ball. But the ball then popped out of Michael Pepper's gloves when there was a stumping to be had.

He was almost run out not long after that, but lived to reach three figures.

Ollie Robinson has notched his seventh half-century of the season and has 52 runs at tea with Durham 267-3 after 64 overs.

Hampshire's hopes rest with Liam Dawson and Keith Barker now.

Craig Miles is over the wicket to Dawson, who clips the ball away for a single.

Barker picks up one more with a leg side clip that nearly rolls away for four after a mis-field in front of the Hollies Stand.

It costs two runs.

Northants lose their sixth wicket against Glamorgan as Justin Broad is caught off James Harris for one. Liam Patterson-White joins Lewis McManus and they are 184-6.

Middlesex must regroup following the loss of Leus du Plooy and are now 180-4 against Derbyshire following a Ryan Higgins boundary, which takes him to 37 not out.

And Alex Lees' century brings up tea at Chelmsford.

Lees and Ollie Robinson (52no) have put on 89 for the fourth wicket to put Durham in a strong position against second-placed Essex.

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Jack Leach is going to have another bowl.

Can he break through this Notts tail?

Calvin Harrison is forward to block. The next ball is nudged just short of Tom Banton at short leg.

Harrison sees out the over, defending a shorter, quicker delivery on the back foot.

A tidy maiden over.

That's Finlay Bean's fifth first-class century.

Just 22 years of age and playing just his 40th first-class innings.

It's not a bad strike-rate, one in eight.

He's worked very hard for this, it's took him a while to get off the mark.

A very good young talent and he's thoroughly deserved his 100.

A "proper" County Championship century from Alex Lees.

More than 180 balls faced but the Durham opener has really put his side in a string position at Chelmsford.

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Moving from Middlesex to Sussex has certainly reinvigorated John Simpson.

A single to mid-on off Lewis Goldsworthy secures Sussex's first batting point and he nudges Wiaam Mulder away for two in the next to go through to his fourth hundred of the campaign.

This one has taken the left-hander 135 balls and featured 16 fours.

Migael Pretorius replaces Kasey Aldridge in the attack as Somerset seek to break through the Notts tail.

He concedes just one run without creating any chances.

Jake Ball tries to tempt Calvin Harrison to play wide of off stump but Harrison leaves it.

Leg-spinner Ed Middleton tries to hurry one onto Finlay Bean, but the Yorkshire opener has time to turn it away for one run, which takes him to 100 off 184 balls.

It is the fifth century of his career and improves a conversion rate which was 50% before this game.

For anyone of a statistical bent, they need to extend this partnership to 275 to set a new club first-wicket record against Gloucestershire.

Now then. Runs are starting to flow after a long lull.

Calvin Harrison drives Kasey Aldridge confidently down the ground for four and in the next over (the 58th) Olly Stone takes his team past 200 runs with a superb straight drive of his own off Jake Ball.

Three more runs come off the over.

It's not over...till it's over.

Liam Dawson is back and across to Danny Briggs, hammering the spinner through point for four.

Craig Miles bowls to Ben Brown from the Birmingham End.

His fourth ball is short and pulled away for four to take Hampshire past 200 in the 55th over.

Jacob Bethell appeared to have the ball covered but dived over the ball.