7:09pm - Stumps at Lord's, where Rogers ended on 161 not out, means play is done for the day around the country. Here are the scores:
Division One
Warwickshire, who won the toss, are 359 for three against Surrey at Guildford.
Nottinghamshire, who were asked to bat, are 177 for two against Yorkshire at Scarborough.
Middlesex, having been put in, are 320 for three against Sussex at Lord's.
Division Two
Glamorgan are 318 for five versus Gloucestershire, who opted to field first, at Bristol.
Hampshire, who won the toss, are 265 for four against Kent at the Ageas Bowl.
Northamptonshire, who elected to bowl first, are 100 for four replying to Worcestershire's 196 at Wantage Road.
@Middlesex_CCC on Twitter: 300 up for Middlesex, a 3rd batting point, Rogers has 150 and Dexter 56. 4 overs left today
6:44pm - Dexter has now reached his half-century to further strengthen Middlesex's total, while play has ended at Scarborough.
6:32pm - Worcestershire get a late breakthrough, Alan Richardson trapping David Sales lbw to leave Northamptonshire 100 for four at stumps.
Neil Dexter and Rogers have brought up a century stand for Middlesex, while play has recommenced at Scarborough.
Play is also done for the day at the Ageas Bowl with Hampshire 265 for four and McKenzie 85 not out.
6:14pm - Bad light has stopped play at Scarborough with Notts 169 for two, while the close has been reached at Bristol with Murray Goodwin 96 not out. Will the veteran be nervous this evening? Surely not, although it would be his first Glamorgan hundred.
It's also stumps at Guildford, where Warwickshire close on 359 for three with Chopra unbeaten on 187 and Ambrose 64.
6pm - Cracking innings from Lumb against his former club at Scarborough, the number three reaching a fine century that has put Nottinghamshire into a strong position.
5:46pm - Some news away from the championship action: Hampshire, who are 261 for four against Kent, have signed Pakistan international Sohail Tanvir.
5:31pm - Gareth Andrew's first wicket leaves Northamptonshire three down, Alex Wakely being bowled for 31.
5:46pm - Some news away from the championship action: Hampshire, who are 261 for four against Kent, have signed Pakistan international Sohail Tanvir for their Friends Life t20 campaign.
5:31pm - Gareth Andrew's first wicket leaves Northamptonshire three down, Alex Wakely being bowled for 31.
@GlamCricket on Twitter: The 5th wkt stand between Allenby and Goodwin is now over as Allenby is trapped lbw by Payne for 105 having added 185. Glam 270/5.
5:13pm - And another individual batting milestone comes up: Varun Chopra has passed 150 for Warwickshire, who are 295 for three.
5:03pm - Glamorgan remain in command at Bristol as Allenby continues his fine campaign thus far by reaching a century from just 149 deliveries.
4:58pm - Northants are battling after losing two early wickets, Alex Wakely and David Sales doing the work.
4:48pm - Ed Cowan falls three short of a half-century to Steven Patterson, one of five Yorkshire players to sign a contract extension today, to leave Notts 101 for two.
It’s tea at Lord’s where Middlesex are 212 for three versus Sussex with Rogers on 110 and Neil Dexter eight.
4:40pm - Chopra and Tim Ambrose, who has 26 from 25 balls, are going well for Warwickshire as are Jim Allenby and Murray Goodwin for Glamorgan, who are 237 for four.
Neil McKenzie, having recovered from a persistent knee problem, has a fifty in his first innings for Hampshire this year.
4:31pm - Chris Rogers, a member of Australia’s Ashes squad, brings up a hundred with a four off Beer as Middlesex reach 195 for two. Soon after, Adam London is lbw to Chris Nash for 18.
4:19pm - Michael Lumb heralds a fifty with two consecutive fours off Moin Ashraf as Notts’ recovery continues.
4:13pm - The ever-reliable Alan Richardson snares opening batsmen Matthew Spriegel and Kyle Coetzer in the first over of Northants’ reply to Worcestershire’s 196.
Stuart Meaker bowls Jim Troughton to leave Warwickshire 208 for three.
3:52pm - Worcestershire are bowled out for 196, Chris Russell the last man to depart, to herald tea.
The interval has also been reached at Scarborough and Bristol, with Glamorgan 200 for four at the latter; Jim Allenby is unbeaten on 68 and Murray Goodwin 50.
Hampshire, meanwhile, lose James Vince on the stroke of the interval to be 183 for four and Varun Chopra goes to three figures for Warwickshire.
In the game that started an hour later than the others, leg-spinner Will Beer bowls Joe Denly for his and Sussex’s second wicket. Middlesex are 152 for two.
Here are the scores at those games taking a break:
Division One
Warwickshire, who won the toss, are 207 for two against Surrey at Guildford.
Nottinghamshire, who were asked to bat, are 72 for one against Yorkshire at Scarborough.
Division Two
Glamorgan are 200 for four versus Gloucestershire, who opted to field first, at Bristol.
Hampshire, who won the toss, are 183 for four against Kent at the Ageas Bowl.
Worcestershire are 196 all out facing Northamptonshire, who elected to bowl first, at Wantage Road.
3:40pm - Nottinghamshire have recovered impressively with Cowan and Lumb taking the score on to 72 for one.
Worcestershire, however, have lost Moeen for 79 and are now 192 for nine.
@WorcsCCC on Twitter: Shantry caught Keogh off Copeland for 3. 176-8
3:21pm - Warwickshire have lost a second wicket, Will Porterfield bowled by Zander de Bruyn.
Hampshire, meanwhile, are three down versus Kent after Adam Riley trapped Liam Dawson lbw.
3:04pm - Northamptonshire are really turning the screw now, Steven Crook trapping Gareth Andrew lbw to leave Worcestershire 165 for seven.
Chris Rogers, meanwhile, moves beyond 50 as Middlesex continue to prosper after lunch.
2:40pm - Gary Keedy delivers Surrey's first breakthrough, bowling Westwood for 71 to leave Warwickshire 153 for one.
@hantscricket on Twitter:WICKET: Spinner Riley traps Adams lbw off his first ball of his spell after lunch. Hampshire now 118-2. Neil McKenzie is the new man.
2:25pm - Moeen can only watch on from the other end as Worcestershire slip into further trouble, Hall bowling Michael Johnson.
2:09pm - Notts’ second-wicket pair, Ed Cowan and Michael Lumb, are digging in as the visitors rebuild after the early loss of Hales.
Warwickshire’s Ian Westwood and Worcestershire’s Moeen Ali herald half-centuries in contrasting team innings.
2pm - Robson is lbw to Will Beer for 54 to herald lunch at Lord’s with Middlesex 100 for one.
Aneesh Kapil is run out as Worcestershire lose a fifth wicket.
1:51pm - Andrew Hall bowls Alexei Kervezee, his second wicket in that manner today, to leave Worcestershire 107 for four.
Glamorgan are also four down as David Payne gets his second caught-behind today, Stewart Walters the victim for 28.
Hampshire captain Jimmy Adams has a half-century.
1:43pm - Darren Stevens strikes with the first ball after lunch at the Ageas Bowl, having Michael Carberry caught at slip for 33.
Robson has a fifty for Middlesex, who are 90 for no wicket, and Warwickshire reach three figures also for no loss.
@Yorkshireccc on Twitter: Five Yorkshire players have signed contract extensions. Ballance, Bairstow and Patterson to 2015 and Rafiq and Ashraf until 2014
1:15pm - Yorkshire’s Ryan Sidebottom has Nottinghamshire’s Alex Hales caught behind for nought in the first over at Scarborough.
Chris Rogers and Sam Robson put on a half-century alliance for Middlesex’s first wicket.
1:06pm - Chopra reaches a fifty for Warwickshire shortly before the interval. Here are the scores in the four games where lunch is being taken:
Division One
Warwickshire, who won the toss, are 97 for none against Surrey at Guildford.
There has been no play between Yorkshire, who chose to bowl first, and Nottinghamshire at Scarborough.
Division Two
Glamorgan are 80 for three versus Gloucestershire, who opted to field first, at Bristol.
Hampshire, who won the toss, are 80 for none against Kent at the Ageas Bowl.
Worcestershire are 100 for three facing Northamptonshire, who elected to bowl first, at Wantage Road.
@TrentBridge on Twitter: Play will start at 1.10pm in Scarborough #YorksvNotts
12:52pm - Warwickshire and Hampshire’s openers are still going strong, with both sides into the 70s.
12:37pm- Middlesex, at 18 for none from nine overs, are making a solid start with the bat against Division One’s leading wicket-takers Steve Magoffin and Chris Jordan, who each have 34 championship scalps this year.
Thilan Samaraweera is bowled by Andrew Hall for 16, leaving Worcestershire 75 for three and earning Northants a first bonus point.
12:30pm - Hampshire opening batsmen Jimmy Adams and Michael Carberry share a fifty partnership against Kent.
12:21pm - Marcus North is cheaply caught behind off David Payne as Gloucestershire bag an early bowling bonus point.
12:11pm - Steven Crook bowls Matt Pardoe for 22, making Worcestershire 44 for two.
12:01pm - Middlesex versus Sussex begins at Lord’s with the hosts batting. An early lunch will be taken at Scarborough at 12:30pm.
Warwickshire pass 50 without loss thanks to Varun Chopra and fit-again Ian Westwood, who returns from injury along with Keith Barker today. Both have been out since mid-April.
@GlamCricket on Twitter:Bragg is caught in the gully as Miles takes a second wicket. Glam 43/2 in the 13th over.
11:43am - Gloucestershire’s Craig Miles has Ben Wright caught behind, leaving Glamorgan 36 for one.
11:36am - Sussex choose to bowl first versus Middlesex at Lord’s.
@Yorkshireccc on Twitter:It's started to rain again at Scarborough so we won't be starting at 11.45am.
11:27am - Yorkshire opt to bowl first against Notts at Scarborough.
Northants capitalise on the pressure they have built as Trent Copeland has Worcestershire captain Daryl Mitchell lbw for one.
11:15am - No wickets to report in the first 15 minutes of play. Northants are keeping it tight as Worcestershire have just one run from four overs.
@Yorkshireccc on Twitter: Umpires have confirmed the delay is because of a damp outfield. They estimate 30 mins mopping up before starting around 11.45am
11:02am - Play begins in four of the five games due to start at 11am. Yorkshire versus Nottinghamshire is delayed by a wet outfield.
@Gloscricket on Twitter: Gareth Roderick & Miles Hammond will be presented with their County Caps today at the tea interval. Congratulations lads #proudmoment
10:50am - Naturally you can follow England’s last NatWest Series one-day international with New Zealand at Trent Bridge, due to begin at 2pm, on ecb.co.uk this afternoon. Here are the thoughts of Ian Bell and Mitchell McClenaghan on the game.
@hantscricket on Twitter: Team news for Hants. Neil Mckenzie is back into the Hampshire side for Michael Roberts and David Griffiths comes in for Chris Wood.
@GlamCricket on Twitter: Glam make one change to their side with Cosker replacing Wagg. Glam lose toss and invited to bat
10:42am - Here is what is happening in the quintet of contests set to begin at 11am:
Division One
Warwickshire opt to bat first against Surrey at Guildford.
Rain delays the toss between Yorkshire and Nottinghamshire at Scarborough.
Division Two
Gloucestershire choose to bowl first versus Glamorgan at Bristol.
Hampshire decide to bat first against Kent at the Ageas Bowl.
Northamptonshire elect to field first facing Worcestershire at Wantage Road.
10:30am - While waiting for news of the tosses at the five games due to start at 11am, why not read our team news preview?
@surreycricket on Twitter: Some early team news..Steven Davies misses game with knee strain..Jason Roy into team..Gary Wilson is keeping...
@Yorkshireccc on Twitter: A little drizzle in the air. We assured the weather will improve. If you are in the Scarborough area come on down. #YCCC
@kentcricket on Twitter: Kent team: Key, Northeast, Bell-Drummond, Nash, Harmison, Stevens, Jones, Coles, Haggett, Shreck, Riley #superkent
10:20am - Hello and welcome to ecb.co.uk’s live blog coverage of the six LV= County Championship games that start today. The highest profile is third-placed Middlesex versus leaders Sussex at Lord’s, which begins an hour later than the others, at midday, due to the hosts’ day/night Yorkshire Bank 40 match with Somerset yesterday.
The other fixtures are Surrey v Warwickshire at Guildford, Yorkshire v Nottinghamshire at Scarborough, Gloucestershire v Glamorgan at Bristol, Hampshire v Kent at the Ageas Bowl and Northamptonshire v Worcestershire at Wantage Road.