system1 group plc shares rose on thursday after the group said that gross margin for the third quarter improved despite a revenue fall shares at 0838 gmt were up 150 pence or 9 at 1800 pence the uk online marketresearch agency said that gross profit margin for the third quarter ended in dec 31 rose yeartodate to 827 compared with the firsthalf margin of 815 however thirdquarter revenue came in at 62 million pounds 75 million representing a 12 fall on a yeartodate basis and also down from the gbp65 million reported the same period a year ago the revenue fall was driven by a reduction in consultancy revenue despite an increase in data revenue the company added that it has repaid all of its gbp25 million revolving credit facility and doesnt expect a net cash reduction in the fourth quarter