Warwickshire have a firm grip at the halfway stage of their LV= Insurance County Championship match at Trent Bridge as they bid to cut Surrey’s lead in the Division One table. As an approaching electrical storm persuaded umpires Peter Hartley and Steve O’Shaughnessy to take the players off just before five o’clock, Nottinghamshire were in deep trouble at 82 for five in their first innings, still 489 runs behind after Warwickshire declared at 571 for nine.