Yorkshire beat Nottinghamshire by 143 runs to close the gap on Essex, while Somerset are just two points behind the leaders after beating Warwickshire 5.35pm BST
Surrey and Hampshire have now shaken hands at the Oval, the match ending in a draw.
In Division Two, bad light has brought a halt to Leicestershire v Durham, while Gloucestershire need 63 runs to beat Derbyshire with nine wickets in hand. 5.11pm BST
The two games which look like being draws – Surrey v Hampshire in Division One and Durham v Leicestershire in Division Two – are still going. I was half-thinking they may have shaken hands at 5pm. Hampshire lead by 20 with five wickets left and Leicester lead by 23 with four left.
The other match, Derbyshire v Gloucestershire, is very much alive at Derby and going the way of the visitors. They are 142-1, needing 121 more with just under 17 overs left.