Hundreds of Cadbury workers protested over pay yesterday as the firm revealed soaring profits. Staff offered a 0.5% rise were furious after the chocolate giant's profits jumped 24% to £262million in the first half of the year. Workers' union Unite accused the firm of backtracking on a three-year pay deal. It said Cadbury originally agreed a 2% rise this year but is now offering just 0.5%. Several hundred workers demonstrated outside four Cadbury's factories after its profits were announced. Staff have threatened to go on strike if bosses refuse to cave in - risking factory shutdowns and chocolate shortages. Unite's Jennie Formby said: "Workers feel betrayed by the company who are raking in profits yet clawing back an agreed, and very small, pay deal." Cadbury denied it agreed a 2% increase and said manufacturing workers were the only ones in the group getting any rise this year.