Rico Back, who heads General Logistics Systems, is to take over from Moya Green as chief executive of Royal Mail on 1st June. Back has been CEO of GLS for 18 years. He was a founding member of German Parcel in 1989, which Royal Mail acquired in 1999. This business was subsequently rebranded as GLS. GLS has been the star performer in the Royal Mail portfolio for a number of years increasing both volumes and revenues. The group has also invested in expanding the business with acquisitions in Spain and the United States in the past 18 months. It now accounts for 35 per cent of the group's adjusted operating profit. Royal Mail chairman Peter Long said: "Under Rico's leadership, GLS has become the leading delivery company of its kind in Europe, making a highly valuable contribution to the wider Royal Mail Group at the same time." The group has also appointed Sue Whalley chief executive post and parcels for Royal Mail UK responsible for all domestic operations apart from Parcelforce and Royal Mail International.