Matty Hurst pulls the final ball of Hassan Ali's over to the boundary to end the session.

It's a session of three rain breaks and three wickets to make life very uncomfortable for Lancashire batters.

George Balderson and Keaton Jennings had mounted a little bit of a recovery but Jacob Bethell has removed both, albeit with a hint of controversy about both calls.

Bethell's figures are an impressive 2-4 from eight overs.

Ooooh, that is close!

Hassan Ali bustles in and strikes Matty Hurst on the pads. That is very perpendicular but nothing given and Hurst survives.

It's been a frustrating morning for Sussex at Lord's and Max Holden edging Danny Lamb for four in the final over of the session underlines that feeling.

The visitors have been unable to separate Holden and Sam Robson, who resumed with the score 62-1 and have added 78 to extend their partnership to 127.

Robson is 79 not out and his partner has 55.

The gloom has given way to blue skies and fluffy white clouds in Worcester and the umpires are making an inspection.

Having assessed the situation, they decide to take another look at 15:00 BST.

Spin at both ends before lunch as Felix Organ turns his arm over to Dom Sibley.

The Surrey opener plays that out comfortably enough for a maiden and that's lunch.

Rory Burns (13) and Sibley (5) have done their job and made it through to the break unscathed.

They faced an awkward 40-minute spell after James Vince declared Hampshire’s first innings, deciding that 481-run lead would do.

Ben Brown was allowed to eclipse his previous best first-class score, reaching 165 not out, before Vince waved him in.

Earlier, Liam Dawson made 81.

Surrey will lunch 463 in arrears.

Matt Critchley whizzes through a maiden to complete the morning session.

And what a couple of hours it has been for Kent on Kent Day with Joe Denly and Matt Parkinson batting through unbroken.

Denly has 45, a score that has been matched by Parkinson, for whom this is a career-best first-class score.

Joe Denly pumps Simon Harmer over the ropes for his second maximum of the morning.

That brings up the 200 for Kent as they close in on an unblemished opening session.

As in the first innings, slow left-armer Liam Dawson is introduced early at Southampton. This time after eight overs.

Dom Sibley takes a single off the fist ball, but there's a big cry of 'oh!' as Rory Burns' defensive push finds the hands of short leg. Luckily for him on the bounce.

More anguished cries as Burns works it off his pad to short leg, again on the bounce, before driving the final ball through the onside for two.

Image source, Rex Features

Easy as you like, Max Holden tucks Danny Lamb off his hip for one and goes to 50 off 125 balls.

He has converted his last two half-centuries into three-figure scores. Will he do it again today?

With the players off the field because of rain, the umpires have decided that lunch will be taken.

Just 13.3 overs bowled this morning, with Yorkshire losing Finlay Bean for a duck during a superb spell by Ben Sanderson.

The Northants seamer has 2-10 from six overs. Adam Lyth (27) and Shan Masood (15) are the not out Yorkshire batters.

The umpires hope play can resume at 13:25 BST.

Interesting thinking by Sussex skipper John Simpson who has a silly mid-off and silly mid-on in place for Max Holden, who edges Danny Lamb past first slip to end the Middlesex boundary drought.

That's much better by Sam Robson in the next over as he drives spinner Jack Carson to extra cover for four more.

Matt Parkinson fancies a 50 as he slog sweeps Simon Harmer away for more to get to 44.

He then steers one wide of slip to add one more more and move to 45 not out.

This is not what Lancashire fans remember of a classic rabbit!

We've seen throughout this match so far that batsmen seem very tentative on this wicket of going on the attack.

They seem to be slightly afraid of doing so unless the ball is rank.

The run rate has now slipped to 2.76 so Middlesex need to crank it up a little if they want three batting points.

The stop-start theme continues in Leicester as a sharp shower sends umpires and players marching to the pavilion.

The covers are on and we are in early lunch territory.

Kent Day will be one to remember for Matt Parkinson!

He picks up a single to reach 40 and set a new career-best first-class score, bettering the 39 he made against Surrey last month.

Well batted Parky!

Michael Neser has his hands on his head once again as Rory Burns survives a big scare.

He finds the outside edge of Burns bat and it flies past second slip to the third man boundary for four, just moments after Toby Albert was taken out of third slip.

That's got to sting.

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Compared to what has been going on in Bristol, it's pretty sedate fare at Lord's where they haven't had a boundary for eight overs.

That won't bother Sam Robson and Max Holden, though, whose partnership is now worth 105.

Robson is 71 not out and Holden has 41.

Scott Currie forces Zain-ul-Hussan throigh the covers and takes three.

Ben Cox repeats the shot to the next ball, but it slows up on the damp outfield and refuses to reach the rope.

Instead the batters race through for that rare thing - the all-run four.

That brings up the 300 in the 93rd over.