Alastair Cook hits his 73rd first-class century for Essex against Gloucestershire
Yorkshire total 521 against Surrey; Lyth 183 and Tattersall 180 not out
England's Zak Crawley and Alex Lees out cheaply for Kent and Durham
Somerset's Lewis Goldsworthy out for 130 against Lancashire
Hampshire declare on 370-9, a lead of 153 over Warwickshire
Leicestershire's Callum Parkinson takes five wickets but Sussex total 588
Snater st Bracey v Gohar 1 (Essex 269-6 v Gloucs 136)
Image source, Rex FeaturesTwo wickets in four balls for spinner Zafar Gohar.
Matt Critchley, on seven, edges to first slip, where Ryan Higgins takes a good catch to his left, and then Shane Snater attempts a wild slog and is stumped for one.
Wonder what Alastair Cook made of that shot? He's 130 not out at the other end.
Kent 121-3 v Northants 303
Northants have the breakthrough!
It's Jack White again - playing just his third game of the season.
Ben Compton never really got going, his 34 has needed 104 deliveries.
Even game again.
Gabriel b Lawes 0 (Yorkshire 521 v Surrey)
And just like that, Yorkshire's first innings is over as Tom Lawes has Steven Patterson caught behind for seven and then bowls Shannon Gabriel with his next delivery for figures of 4-51.
Jonny Tattersall is left on 180 not out - a fantastic innings, lasting 344 balls and featuring 23 fours.
Now the task for Yorkshire is to take 20 Surrey wickets. No easy task with few demons in the pitch as of yet.
Essex 264-4 v Gloucs 136
Josh Shaw follows a wide delivery outside off stump with one pitched up on leg. Unfortunately, both are feeding the strengths of Alastair Cook and he despatches them for four.
A Zafar Gohar maiden follows, but Cook is 129 not out and Matt Critchley has four.
Kent 117-2 v Northants 303
Jimmy Neesham is trying round the wicket but Joe Denly takes him for four then six and brings up a half century in 70 balls.
A quick reminder that there is a one-day international going on at the moment. If you're an England fan, though, you might not want to watch this or look at the scorecard.
Jason Roy, Joe Root and Ben Stokes all fall for 0 as India make a stunning start to the first ODI.
Read MoreHampshire 184-4 v Warwicks 217
Two runs off fellow left-arm spinner Danny Briggs takes Liam Dawson to a 94-ball half-century.
Ian Holland is 83 not out and this partnership is now worth 106.
Nic Maddinson and David Bedingham (45) both gone for Durham, who are 124-6 against Derbyshire, still trailing by 155.
James Harris now has three Notts wickets - all bowled - and the visitors are 170-3 after 50 overs against Glamorgan, with Matthew Montgomery 37 not out.
Middlesex are 32-0 at Merchant Taylors' School, 39 ahead of Worcestershire, with the game already into its second innings.
Callum Parkinson now has four wickets for Leicestershire, removing Delray Rawlins (75) and Henry Crocombe in successive overs, but Sussex are 539-7.
van der Merwe b Wood 55 (Lancs v Somerset 446)
Roelof van der Merwe has got full licence to have a dip here and he's taking full advantage.
He swung Jack Morley for two sixes, taking his tally to three, and got to fifty in 61 balls.
Morley was biffed out of the attack but back came Luke Wood to end it.
Somerset have done jolly well to post a large total having been 105-4 just after lunch yesterday.
The last six wickets have got through over 95 overs.
This is only the third time this season they've put up over 400 runs.
On both those occasions - home to Warwickshire and away to Gloucestershire - they won by an innings.
Kent 100-2 v Northants 303
Ben Compton, 30, and Joe Denly, 41, are going along nicely for Kent at Canterbury.
Yorkshire 501-8 v Surrey
A pair of singles, one each for Jonny Tattersall and Srteven Patterson, and the Yorkshire total reaches 500 at Scarborough.
There's a way to go yet, though, to match their 704 at The Oval in 1899.
Essex 252-4 v Gloucs 136
Matt Critchley square drives Zafar Gohar for three - he's off the mark and the Essex total moves beyond 250. Alastair Cook back on strike on 118 not out.
Thompson lbw Lawes 9 (Yorkshire 497-8 v Surrey)
Encouragement for Surrey at the start of the afternoon session as Jordan Thompson goes right back onto his stumps and is plumb lbw to young seamer Tom Lawes.
Jonny Tattersall, on 163, now in danger of running out of partners.
Hampshire 177-4 v Warwicks 217
There's a bit of away swing for Nathan McAndrew but Liam Dawson reaches for it and makes a solid enough contact to find the cover boundary. He moves to 45 not out and Ian Holland is on 81.
Yorkshire 489-7 v Surrey
They are ready to resume at Scarborough following a morning session that was extended because of a 40-minute rain hold-up at the start.
Will Jacks will open up for Surrey and tea will be taken at 16:10.
Walter c Harris b Gohar 10 (Essex 239-4 v Gloucs 136)
Image source, Rex FeaturesLooks like Alastair Cook is settling in for a biggie, having completed his hundred just before lunch, but he has lost partner Paul Walter.
Zafar Gohar finds a little bit of turn outside off-stump and the left-hander turns it straight into the hands of Marcus Harris at leg-slip.
Good captaincy, well bowled.
Durham have reached 100-4, with David Bedingham moving into the 40s, in the early stages of the afternoon against Derbyshire.
Nottinghamshire have lost Haseeb Hameed for 70 at Sophia Gardens, bowled by James Harris and they are 144-2 against Glamorgan.
Six overs gone now in Middlesex's second innings and they are 11-0, a lead of just eight over Worcestershire, who were all out for 191.
Still no respite for Leicestershire, with Sussex now 517-5 at Hove, and Delray Rawlins on 66 not out.
Lancs v Somerset 403-9
A nice little hand from Jack Brooks to help his side to 400.
But not much more for him after lunch as the young left-arm spinner Jack Morely collects his second wicket.
Somerset almost done.
Hampshire 146-4 v Warwicks 217
Hampshire have made a positive start to the afternoon.
Ian Holland cover drives for four and then finds the boundary again as Nathan McAndrew finds a little extra bounce and he opens the face to run it down to third man.
Essex 229-3 v Gloucs 136
A single for Alastair Cook from a Tom Price no-ball brings Paul Walter onto strike and he opens his account with a well-timed clip through mid-wicket for four. The lead is now 93.