Public sector support services firm Tribal Group sent shares rocketing 15 per cent on Wednesday after saying it expects revenue to be in line with expectations and deliver pre-tax profit of around 12.8m. Specifically, its international activities performed strongly in 2012, and good progress was made with the major Student and Learning Management contract with the Department of Education and Communities of New South Wales, Australia. The group also said that 2013 had "begun well" and anticipates further good progress in Tribal's performance in 2013. The share price rose 15% to 17.25p by 132.25p by 13:25.NR