Legislation introduced in April 2017 requires all legal entities of 250 or more employees to publish their gender pay gap. The gender pay gap is the difference between the average earnings of men and women, expressed relative to men’s earnings. For example, nationally women earn 18.4% less than men, so this would be reported as a gender mean pay gap of 18.4%. Source: Office for National Statistics, 2017. However in the science and engineering sector, the mean average gender pay gap is 20% and as at April 2017 our Analytical & Development Services division reported a gap of 20% in line with industry norms. For information on our commitment to continually improve this, see our report here.