Olly Hannon-Dalby and Matt Lamb led the way as Warwickshire edged their way to a narrow advantage over Gloucestershire on an attritional second day of their Bob Willis Trophy match at Bristol.

After Hannon-Dalby’s career-best six for 33 restricted the home side to 210 all out, Lamb’s hard-fought 65 (137 balls, 12 fours) underpinned the Bears’ progress to 230 for eight at the close.