Sam Northeast, that is beautiful!

The Glammy skipper has played some glorious shots, but I'm not sure if there are too many better than that.

With a bit of footwork and a slightly open face, he sends another Leus du Plooy ball through the offside for four.

He is now eight short of 150.

Probably appropriate that it's a Sam Northeast boundary which takes Glamorgan to their first batting point of the season.

He frees his arm and drills a Josh de Caires delivery down to the short cover boundary.

Glamorgan could really put their foot on the accelerator in this session.

Broad moves to 22 with a single off Lamb, driven through cover.

One more for Procter, tapped away to deep square leg.

John Simpson is chatting to Ollie Robinson.

Is he going to bowl before tea?

Not yet. Jack Carson is coming on to bowl some off spin.

A couple of singles from Josh de Caires' first over after the interval.

Leus du Plooy opens from the other end and spoils a decent over with a filthy long hop off the last ball that Sam Northeast hammers away to the fence.

Thanks very much!

Image source, Rex Features

May be worth pointing out, as the players return for the evening session, that Nottinghamshire are the only team to have claimed a bonus point so far.

Technically, does that make them the early front-runners in the County Championship??

Anyway, in theory Notts have another 39 overs to try and capture further bonus points this evening. Paul Walter has come out to join Jordan Cox at the crease after that wicket just prior to tea.

Danny Briggs has been causing a few problems for Kashif Ali, who was briefly out of his ground as one ball was rolling back into the stumps.

He survives.

Jones is driving Rhodes outside off but without piercing the off side field.

He's probably been the pick of the Warwickshire bowlers - and he has Jones beaten outside off stump with his fifth ball.

Maiden over.

Northants have recovered well after the early loss of Emilio Gay, with just five runs scored at that point.

Procter plays and misses Lamb outside off stump.

Beaten again outside off.

The fourth ball is shorter and leg side, allowing room for Procter to scoop behind square for a single to take Northants to 50 runs in the 18th over.

Broad is beaten outside off but survives the over.

Nick Webb
BBC Radio Wales

A chanceless Sam Northeast century has put Glamorgan in the driving seat at a blustery Lord’s as Middlesex’s decision to bowl first appears to have back-fired.

The Kookaburra ball has done virtually nothing for Middlesex’s battery of seamers, despite two economical spells from Ryan Higgins.

Northeast put on 129 with Billy Root (67) before the makeshift opener got a fine ball from Henry Brookes, the home side’s only success of the afternoon.

Spinner Josh de Caires also had his moments as Kiran Carlson could not get going as quickly as usual, but if the Glamorgan batters can stay patient, they have a formidable platform to build on.

Grace Ballinger
The Blaze bowler on BBC Radio Nottingham

It's an excellent delivery again by Paterson, bowling that nagging line and length, again getting the reward for it.

Turned momentum on its head before tea.

Lovely shot by Jones, who opens the face of the bat as late as possible to run a ball from Rushworth through third man for four runs.

The Worcester 200 comes in the 60th over.

The clouds have been swirling around the ground, but mercifully not for long enough thus far to threaten play.

No obvious demons in this Headingley pitch so far as Leicestershire's openers reach 16 without loss from the first seven overs.

Rishi Patel, who's just got away with a risky shot against Ben Coad that flew to safety over midwicket, has 10 while Marcus Harris has just a single to his name from 19 deliveries.

Justin Broad picks up four more with a delightful back foot punch through cover off the bowling of Lamb.

Ollie Robinson is doing some stretches in the field and may well bowl another spell before the tea break, which is scheduled for 4.35pm.

Single for Broad off Lamb in his next over.

Close for Procter, who is squared up by Lamb and edges the ball just short of third slip.

Rushworth is back in the attack for the hosts and Jones clips the ball square for his first four.

Four more to Jones, cut away through gully.

Jones will keep the strike with a single behind square.

Ten off the over.

With rain causing havoc to the opening day and matches starting at different times, there is no definitive teatime scoreboard.

Instead, here is an update of scores as things stand at 16:00 BST.

Division One:

Chester-le-Street: Durham v Hampshire - play abandoned for the day

Canterbury: Kent v Somerset - play abandoned for the day

Emirates Old Trafford: Lancashire v Surrey - play abandoned for the day

Trent Bridge: Nottinghamshire v Essex 174-3

Edgbaston: Warwickshire v Worcestershire 187-2

Division Two:

Derby: Derbyshire v Gloucestershire - play abandoned for the day

Lord's: Middlesex v Glamorgan 234-2

Hove: Sussex v Northamptonshire 40-1

Headingley: Yorkshire v Leicestershire 12-0

Danny Lamb joins the attack and starts with a maiden.

Hudson-Prentice continues from the Cromwell Road End and Justin Broad picks up a single to move to 14.

Earlier this afternoon, Ollie Robinson bowled with good accuracy in a four-over spell for nine runs.

Dave Bracegirdle
BBC Radio Nottingham commentator

Dean Elgar is gone for 80, he won't make his 100 on his Essex debut, but he's made a magnificent contribution.

My, how Notts needed that, that was a fabulous partnership.

The final over of the session is bowled by Leus du Plooy and he almost comes up with the wicket that Middlesex really wanted.

Turn and bounce from the slow left-armer and it beats everything of Sam Northast's defences.

However, the Glamorgan captain goes to the break unbeaten on a superb 121.

He has a first-day century. Surely he couldn't reach 200 on day one, could he?

Rhodes will complete the over. Five deliveries remaining and a theoretical 39 overs to come.

Kashif Ali will take strike on 71.

Rob Jones is yet to get off the mark after facing just one delivery before the break.

Middlesex turn to the part-time bowling of Leus du Plooy, the seventh bowler used this innings.

And he almost strikes fourth ball. His ball is flighted, but wide of off-stump and Kiran Carlson eyes it up.

The batter misses it and the bails are removed by Jack Davies, but Carlson just about recovers his ground.