With all seven games now done for the day, here is a summary of how things stand.
We will be back tomorrow as five matches come to an end.
Division One
Sussex are 228 for four having followed on at Lord’s and trail Middlesex by 49 heading into the final day.
Surrey are 269 for seven in reply to Warwickshire’s 631 for nine declared at the end of day three at Guildford.
At Scarborough, Yorkshire are 358 for four after three days, responding to Nottinghamshire’s 443.
After two days at Taunton, Durham are 163 for three in reply to Somerset’s 458.
Division Two
Northamptonshire defeated Worcestershire by 10 wickets at Wantage Road.
Gloucestershire are 456 for four at Bristol in reply to Glamorgan’s 448, with one day still to come.
After three days at the Ageas Bowl, Hampshire are 98 for three in their second innings and lead Kent by 232.
6:47pm - Keith Barker rounds off a stunning final half-hour at Guildford by dismissing Jason Roy for two. That makes it four wickets for seven runs in 31 deliveries. Surrey close on 269 for seven and the follow-on now looks a distinct possibility.
6:38pm - Overton brings the second day at Taunton to a conclusion with the wicket of Will Smith. Durham, for whom Stoneman has 78, close 295 in arrears on 163 for three.
Gloucestershire reach stumps on 456 for four against Glamorgan, leading by eight.
At the Ageas Bowl, Hampshire end day three 232 ahead on 98 for three.
Ponting moves to 50 in the only game where play is still continuing.
6:27pm - Good grief! Rankin makes it three wickets in an over by trapping Gary Wilson lbw for two! In five balls, the giant Warwickshire paceman has doubled the number of breakthroughs in the day at Guildford. Surrey are now under some pressure, requiring 218 more to avoid the follow-on.
6:25pm - Boyd Rankin bowls Zander de Bruyn and nightwatchman Stuart Meaker in the space of three deliveries to leave Surrey 262 for five.
Sussex end day three at Lord's trailing by 49 on 228 for four, Joyce and Wright having put on an unbroken 105 to halt Middlesex's victory charge.
Gloucestershire now lead at Bristol and still have six first-innings wickets intact.
@surreycricket on Twitter: A perfect evening @GuildfordCChttps://vine.co/v/bL5TOiAH2lw
6:03pm - Borthwick takes 11 from Arul Suppiah's first over to reach a 57-ball half-century, but falls to George Dockrell in the next set of six.
They are done for the day at Scarborough, where Yorkshire have amassed 358 for four on the back of hundreds from Gale and Ballance.
Play is about to recommence at Bristol, where nine overs remain.
Sussex now trail by just 61 as the partnership between Joyce and Wright nears 100.
5:53pm - And now Ballance can celebrate a century of his own. He and Gale have put on 230 so far to rescue Yorkshire from a perilous position.
Scott Borthwick is prospering alongside Stoneman at Taunton.
@hantscricket on Twitter: WICKET: McKenzie's hit the ball onto his own stumps and Hampshire are now 53-3. A lead of 187 runs.
5:46pm - Yorkshire skipper Gale moves past his previous highest first-class score of 151 not out.
Hampshire are scoring with predictable speed against Kent. I wonder what sort of declaration we will see from the Ageas Bowl hosts tomorrow?
Rain has forced a stoppage at Bristol, with Gloucestershire having not added to their total since Gidman's exit.
@GlamCricket on Twitter: Gidman is caught and bowled by Cosker for 113. Glos 432/4.
@OptaJim on Twitter: 6 - @mark26stone has six scores of 50 or over in his last nine first class innings for @DurhamCricket. Solid.
5:33pm - Well I never - a wicket has fallen in the clash between Surrey and Warwickshire, only the third today and 13th of the match. Arun Harinath is the man to go, caught by visiting skipper Jim Troughton off Rikki Clarke for 65.
Joyce has 50 against his former county at Lord's.
5:26pm - Gidman reaches his century, from just 117 balls. It would appear the pitch at Bristol is about as helpful to bowlers as the one at Guildford. Gloucestershire are 414 for three and 34 behind Glamorgan.
5:18pm - Kent strike again, Michael Carberry falling leg-before to Charlie Shreck.
Yorkshire now have 300 on the board and Ballance is nearing a hundred.
Ricky Ponting is in the runs again for Surrey, who - like Warwickshire - are making the most of the flat deck at Guildford.
5:14pm - Hampshire lose an early wicket in their second innings as Matt Coles removes Jimmy Adams for a blob. The runs will surely flow freely at the Ageas Bowl this evening after Kent declared behind.
Ed Joyce and Luke Wright bring up a very important half-century alliance for Sussex in quick time. The experienced duo need to keep going if Middlesex are to be denied.
5:05pm - Glamorgan finally remove Michael Klinger at Bristol. The home captain is caught behind off Jim Allenby for 142, with Alex Gidman nine short of a century.
Mark Stoneman brings up a 53-ball fifty for Durham, who are 81 for one in reply to Somerset's 458.
At Scarborough, Andrew Gale and Ballance have set a new record partnership for Yorkshire's fifth wicket against Nottinghamshire. The Tykes are 286 for four.
@hantscricket on Twitter: Kent have declared on 321-7, still trailing Hampshire by 134 runs. Clear effort from both sides to create a match result. Game on!
4:53pm - Surrey’s Arun Harinath heralds a typically patient fifty from 134 balls.
4:39pm - James Harris takes the vital wicket of Matt Prior as Sussex, following on, slip to 123 for four. They are still 154 behind.
4:33pm - Jamie Overton ousts Keaton Jennings for 15, leaving Durham 38 for one.
Gary Ballance has a fifty as Yorkshire continue to prosper.
David Balcombe snares Ben Harmison for 63, making Kent 301 for seven. Soon after, they avoid the follow-on.
4:24pm - Ateeq Javid has Solanki lbw for 69 to herald tea with Surrey 169 for two in response to Warwickshire’s 631 for nine declared.
Play to restart at Bristol at 4.35pm. Twelve overs have been lost, and the close of play is now 6.30pm.
4pm - Tea arrives at all games apart from Surrey versus Warwickshire. Here are the scores:
Division One
Sussex, following on, are 85 for three, 192 behind Middlesex at Lord’s.
Yorkshire are 235 for four in response to Nottinghamshire’s 443 at Scarborough.
Durham are 17 for none, responding to Somerset’s 458 at Taunton.
Division Two
Gloucestershire are 349 for two in reply to Glamorgan’s 448 at Bristol.
Kent are 286 for six in response to Hampshire’s 455 at the Ageas Bowl.
3:50pm - Fifties come for Surrey’s Vikram Solanki, Yorkshire’s Gary Ballance and Kent’s Ben Harmison.
Michael Yardy falls for 41 to James Harris, leaving Sussex three down.
3:44pm - Tea is being taken at Taunton with play due to resume at 4:10pm following this afternoon’s rain delay.
3:27pm - Part-time bowler James Vince traps Stevens in front for 60. Kent are therefore 257 for six, responding to Hampshire’s 455.
3:19pm - Yorkshire captain Andrew Gale hits Samit Patel for six to reach his first century since 2011. The White Rose are 214 for four in reply to Nottinghamshire’s 443.
Joe Denly runs Chris Nash out for 36, making Sussex 67 for two in their second innings. They trail Middlesex by 210.
3:15pm - An early tea is being taken at Bristol.
2:56pm - Surrey lose their first wicket as Keith Barker ousts Rory Burns for 34, making the Guildford hosts 69 for one in response to Warwickshire’s mammoth 631 for nine declared.
There are now rain delays at Bristol and Taunton.
2:50pm - Darren Stevens has a fifty in just 44 balls for Kent, who are 228 for five in reply to Hampshire’s 455.
Just a reminder that Boyd Rankin now plays in the game and replaces Tom Milnes @CricketingBears
2:40pm - Gidman goes to a half-century as Gloucestershire bare down on Glamorgan’s first-innings score.
2:28pm - We've had a quick bout of hokey cokey down at Lord's. The players were off for rain and back on moments later. Sussex are 34 for one after nine overs of their second innings.
2:14pm - Gloucestershire bring their 300 up, with Michael Klinger and Alex Gidman closing in on a fifty stand for the third wicket. The former has 124 to his name.
@surreycricket on Twitter: 14:30 start ...59 overs left today..16:20 tea @GuildfordCC @CricketingBears
@hantscricket on Twitter: Tomlinson has his first wicket of the match, well-caught at slip by Dawson to dismiss Nash. Kent now 156-5.
1:57pm - Two wickets in as many balls sees Scott Borthwick wrap up the Somerset innings at Taunton. A brief bout of lusty hitting from George Dockrell and Jamie Overton had moved the hosts' score to 458.
1:48pm - And Sussex's woes continue at HQ! Tim Murtagh makes sure the first over of their second innings is a wicket-maiden by trapping Luke Wells in front off its final ball.
1:45pm - Good news from Southampton, where they've started the afternoon session on time following a washed-out morning. Meanwhile, at Lord's, Middlesex have asked Sussex to follow on. Ed Joyce's men must tackle a mighty first-innings deficit of 277.
1:10pm - Here are the lunchtime scores:
Division One
Sussex are 222 all out in reply to Middlesex’s 499 for eight declared at Lord’s.
Yorkshire are 123 for four in response to Nottinghamshire’s 443 at Scarborough.
Somerset are 432 for eight versus Durham at Taunton.
No play was possible this morning at Guildford where Surrey are 49 for none in reply to Warwickshire’s 631 for nine declared.
Division Two
NorthamptonshirebeatWorcestershire by 10 wickets at Wantage Road.
Gloucestershire are 273 for two in reply to Glamorgan’s 448 at Bristol.
No play was possible this morning at the Ageas Bowl where Kent are 149 for four in response to Hampshire’s 455.
1pm - Rayner has Steve Magoffin lbw for 10 to dismiss Sussex for 222, a first-innings deficit of 277, and earn figures of 5-63 against his former county. Will Middlesex make them follow on?
12:45pm - Jaques and Gale reach fifties but Samit Patel then has the former held at short-leg for 51 to make Yorkshire 121 for three, halting a stand worth 94.
12:40pm - Will Beer’s resistance alongside Wright ends as Neil Dexter has him caught behind for 25, breaking an alliance of 88. Next ball former Sussex spinner Ollie Rayner has Wright caught and bowled for 77, making Sussex 205 for nine and in danger of being made to follow on after Middlesex’s 499 for eight declared.
Afraid to say it is raining again @GuildfordCC
12:30pm - Michael Hogan ends Gloucestershire’s second-wicket stand on 180 by having Dan Housego caught on the square-leg boundary for 82. The hosts are therefore 257 for two.
Somerset wobble after Compton’s departure, Mark Wood having Craig Meschede caught behind for 12 to make the score 408 for eight.
So if no further rain @GuildfordCC we will start at 13:10...80 overs left today @CricketingBears
12:15pm - Compton goes for 166, caught behind off spinner Ryan Buckley, to make Somserset 390 for six. Compton added 83 with Peter Trego, who soon falls to Buckley via a fine Paul Collingwood catch.
The covers are coming off so as long as there is no more rain play will start at 1.40.
12pm - RESULT! Northamptonshire (314 & 8/0) beat Worcestershire (196 & 125) by 10 wickets at Wantage Road. Kyle Coetzer hits Shantry for six to complete a comprehensive win that extends Northants’ lead over second-placed Worcestershire at the top of Division Two to a whopping 44 points and with a game in hand over their opponents.
There is still no play at Guildford and the Ageas Bowl. In the other ongoing matches Sussex, Yorkshire, Somerset and Gloucestershire are yet to lose a wicket today.
11:50am - Gloucestershire’s in-form captain Michael Klinger moves to three figures, his third hundred of the season, in a stand with Housego so far worth 136.
Phil Jaques and Andrew Gale share a fifty partnership as Yorkshire, who are 82 for three, rebuild in reply to Nottinghamshire’s 443.
11:45am - Worcestershire sneak in front before David Willey has Alan Richardson caught at gully, leaving Moeen Ali unbeaten on 44. Northants need eight to win after Copeland took 6-41 in his last appearance for them.
11:35am - Luke Wright has a fifty for Sussex, who are nevertheless still struggling at 165 for seven in reply to Middlesex’s 499 for eight declared.
Dan Housego makes a half-century for Gloucestershire, who are replying strongly to Glamorgan’s 448 having just gained their first batting bonus point for the loss of two wickets.
11:25am - Compton goes to 150 and Copeland has Chris Russell caught behind, making Worcestershire nine down while still 10 behind.
11:15am - The five other games are under way. England Test opening batsman Nick Compton is building on yesterday’s century for Somerset.
Trent Copeland, making his farewell appearance for Northants, strikes twice in an over to leave Worcestershire two wickets from defeat. Gareth Andrew was caught behind for 18 and Jack Shantry lbw for nought.
10:50am - The only match not in its third day is Somerset versus Durham at Taunton, which began yesterday. Northamptonshire against Worcestershire at Wantage Road is closest to a conclusion with the visitors 97 for six in their second innings and 21 runs behind.
Like in the contest between Hampshire and Kent at the Ageas Bowl, there is a rain-delayed start between Surrey and Warwickshire at Guildford.
Rain has delayed the start of day 3.
10:30am - Hello and welcome to ecb.co.uk’s live blog coverage of the seven ongoing LV= County Championship games. Here’s how they stand:
Division One
Surrey are 49 without loss in response to Warwickshire's first-innings 631 for nine declared at Guildford.
Yorkshire are 29 for three in response to Nottinghamshire's first-innings 443 at Scarborough.
Sussex are 147 for seven in response to Middlesex's first-innings 499 for eight declared at Lord's.
Somerset are 336 for five versus Durham at Taunton.
Division Two
Gloucestershire are 179 for one in response to Glamorgan’s first-innings 448 at Bristol.
Kent are 149 for four without loss in response to Hampshire’s first-innings 455 at the Ageas Bowl.
Worcestershire are 97 for six in their second innings against Northamptonshire at Wantage Road and trail by 21.