Here's the latest in our Division Two matches...

We could well be heading for an early finish at Lord's - where Middlesex are 29-1 on second innings after bowling Sussex out for 171. That's just two more runs than the hosts made first up.

The hosts lead by 27.

Leicestershire are 78-5 against Gloucestershire at Bristol, where Craig Miles has removed Mark Cosgrove and Neil Dexter for just eight runs between them. They trail by 124.

Warwickshire have moved ahead of Glamorgan at Colwyn Bay, where the visitors have 226-4 with Ian Bell on 104 not out.

He reached his century off 194 balls with 13 fours and has passed a career tally of 20,000 first class runs.

The hosts were dismissed for 202.

Durham are struggling on 98-5 but this is a low scoring game at the Riverside and it's hard to tell what a par target would be. The hosts need more runs though as they only lead Northants by 25.

Kent are firmly in charge at Derby where they've put Derbyshire to the sword, racking up 561-8, with number nine Matt Henry on 81 not out.

Ged Scott
BBC Sport at Trafalgar Road, Southport

Image source, BBC Sport

Lunch over... But Onions is still prominent on the menu at Southport.

Lancashire’s Graham Onions, who removes Brett D’Oliveira. The ninth wicket of the day to fall so far.

He's gun barrel straight here and the batsmen manage a single each in the over.

So far so good this afternoon for the hosts.

You've got to love this tweet from Lancashire captain Liam Livingstone!

The all-rounder has been out with a fractured thumb but was warming up in the nets before play started at Southport this morning.

So can anyone help him get a game on Saturday?

Jamie Overton is generating some serious pace here and nearly gets the better of Gary Ballance with one that beats him outside the off.

May well be the quickest bowling we've seen in the match so far.

Big appeal from Lewis Gregory for lbw. Adam Lyth stares intently at his bat as if to say "inside edge".

Not out, anyway. Maiden over.

After Amar Virdi's eye-catching 19 came to an end, Notts now begin their first innings after lunch.

Leaders Surrey made 375 - will that turn out to be a good score at The Oval?

Morne Morkel takes the new ball for Surrey, with Kraigg Brathwaite and new signing Ben Slater facing.

Image source, Rex Features

After 13 runs in the first two overs batting was made to look like very hard work, with Ian Holland and Liam Dawson in particular both posing problems with movement and a bit of low bounce before the break.

The umpires are on their way to the square.

Varun Chopra is on 55 not out and Tom Westley has 38.

Just a couple of runs coming from Gregory's first over after the break.

Lovely shot from Gary Ballance, who cuts Jamie Overton through point for four.

Play resumes after lunch - Worcestershire lead by 105 runs but only have seven more wickets to play with, and to set relegation rivals Lancashire a tough total.

Alex Milton and Pears skipper Brett D'Oliveira in the middle, with Graham Onions bowling for the Red Rose.

Somerset have plenty of runs in the bank but would've hoped for more and they'll be kicking themselves about the let off when Adam Lyth was dropped on five.

Huge relief for Marcus Trescothick that the Kane Williamson drop only cost four runs.

He's back in the middle now with Gary Ballance.

Lewis Gregory bowls...

Nick Webb
BBC Wales Sport

It’s been Warwickshire’s first session at Colwyn Bay as they added 93 runs for the loss of nightwatchman Chris Wright, bowled by Craig Meschede for 16.

Ian Bell survived a few false shots early on, twice edging Ruaidhri Smith past leg stump, to reach 89 not out at lunch with some graceful drives.

He has now scored 310 against Glamorgan this season without being out.

Sam Hain reached 29 not out at lunch with the title-chasing visitors looking set to take control of the game.

Adam Whitty
BBC Radio Kent at Derby

Kent’s batsman did their job yesterday, getting to 365-6 yesterday.

The good work wasn’t carried on by the lower order, with Grant Stewart and Matt Henry, coming in at eight and nine respectively, battering the ball to all parts this morning after Daniel Bell-Drummond’s early departure.

Image source, Getty Images

Their 119-run partnership has put Kent in a marvellous position, and meant they got maximum bonus batting points for the first time this season.

Indeed, Stewart and Henry have set themselves up rather nicely to bowl at the Derbyshire batting line up later.

There’s been no declaration yet, but expect it to come in the lunch interval.

Adrian Harms
Sports reporter, BBC Sussex

Another five wickets have fallen this morning to add to the 16 yesterday, and with a good weather forecast a result in this game looks almost inevitable.

The pitch is still offering help to the seamers - illustrated by the fact that none of the 116 overs bowled so far in the match have been spin - although overhead conditions are much better than yesterday when the floodlights were on for much of the day.

Middlesex know they must win to have any chance of remaining in the promotion race.It's making for an intriguing contest.

Isabelle Westbury
Former Middlesex captain at Headingley

An entertaining few overs to start the day saw Somerset fall short of a fifth bonus point by just one run.

Jack Leach was the last wicket to fall when, with the score on 399, he shouldered a rising delivery from David Willey to a brilliant catch in the slips by Adam Lyth.

Despite this frustration, Somerset were quickly on top in the field when Harry Brook was bowled by a searing delivery from Lewis Gregory.

When Lyth and Kane Williamson were then both dropped in the slips early into their innings, things looked to be veering back Yorkshire’s way.

However with the wicket of Williamson for 18 just before lunch, Somerset will be feeling the happier of the two.

Dave Fletcher
BBC Radio Derby Sport at the County Ground

Promotion-chasing Kent tightened their grip on the game at derby as they moved on to 534-8 in their first innings at lunch.

Daniel Bell-Drummond went early only for Grant Stewart (85) and Matt Henry to add 119 for the seventh wicket.

At lunch, Henry was on 68 not out as Derbyshire awaited the declaration.

Division One

• Essex 111-1 v Hampshire
• Lancashire 161 v Worcestershire 222 & 44-3 (lead by 105 runs)
• Surrey 375 v Nottinghamshire
• Yorkshire 56-2 v Somerset 399

Division Two

• Derbyshire v Kent 534-8
• Durham 129 & 77-5 v Northants 198 (lead by 8 runs)
• Glamorgan 203 v Warwickshire 209-4
• Gloucestershire 202 v Leicestershire 78-4
• Middlesex 169 & 19-1 v Sussex 167 (lead by 21 runs)

And that's lunch at The Oval.

Surrey add another 119 runs to their overnight total, with Mark Stoneman converting his century and going on to score 144.

The Division One leaders probably take that session, but Notts will be confident of matching the hosts with the bat when they begin their innings after the break.