Companies featured in deals include UPVC Direct, Cansford Laboratories, Carreg, Holyhead Towing Company, TXO and SCS Engineering. : Companies featured in deals include UPVC Direct, Cansford Laboratories, Carreg, Holyhead Towing Company, TXO and SCS Engineering Rhondda-based UPVC Direct has acquired family owned Principality Plastics Warehouse in a deal part-funded with a significant loan and equity investment by the Development Bank of Wales. Established in 1992 by John Peters, Principality Plastics Warehouse, which has annual sales of £9m, has warehouses in Cardiff, Gloucester and Swansea. It Supplies plastic building supplies to the trade and DIY markets.