BT, Unilever and the international law firm Eversheds are among those signed up to Think, Act, Report. The scheme has only attracted 120 supporters in nearly two years of existence, having risen from 54 participants in November 2012. However, the CMI’s data did provide some evidence to support Miller’s contention that the overall pay gap is narrowing: the difference between the average salaries earned by male and female bosses has appeared to shrink, decreasing from an average of £10,060 in 2012 to £8,502 in the CMI’s most recent figures. However, the institute cautioned against direct comparisons between the 2012 and 2013 samples – which both polled around 40,000 managers – as they are not identical. A sub-set of 17,000 individual managers, whose salaries and bonuses have been tracked over a number of years, showed that male managers’ earnings are rising faster than women’s for the first time in five years, with men enjoying total increases of 3.2% compared with 2.8% for women, when salaries and bonuses are combined. At the most senior level, male directors’ earnings rose by 5.3% over the past 12 months, compared with just 1.1% for female directors.