SigmaRoc plc, through its subsidiaries, invests, acquires, and integrates businesses in the quarried materials sector in the United Kingdom, Ireland, western Europe, Central Europe, and Nordics. It also produces aggregates, stone, granite, concrete blocks and precast elements, asphalts, ready-mix concrete, precast concrete, and other stone products; supplies value-added industrial and construction materials; and provides shipping logistics, road contracting, waste recycling, and patent and licensing services, as well as engages in the limestone quarrying and processing activities. In addition, the company offers crushing stone, retaining wall system, railway operation, information technology, and CO2 management services. The company was formerly known as Messaging International Plc and changed its name to SigmaRoc plc in August 2016. SigmaRoc plc is based in London, the United Kingdom.