SigmaRoc plc (SigmaRoc), formerly Messaging International plc, is a United kingdom-based company, which pursues a buy-and-build strategy in construction materials focused on various markets. The Company invests in and operates new and existing construction material assets. It is engaged in developing its pipeline of transactions and projects. SigmaRoc targets both the up and down stream heavy construction materials sectors, such as operating assets, value added products and services, associated infrastructure and supply chain. The Company's focus markets include specific areas in Europe. Its subsidiary is Ronez Limited, which is a vertically integrated supplier of building materials and services in the Channel Islands. Ronez Limited supplies the Channel Islands with aggregates, ready-mixed concrete, asphalt and precast concrete products, and offers a range of construction materials, and contracting services both to the trade and to the public on the islands of Guernsey and Jersey.