Wales is a major centre for Maintenance, Repair and Overhaul. Over 10% of the UK's activity is managed here. With world leading names including GE Aviation, British Airways and DECA already here and smaller companies emerging, the sector continues to grow in volume as well as workforce expertise. Alongside opportunities to tap into local markets, businesses in Wales have suppliers on their doorstep. A mature supply chain serves both aerospace and defence markets with leading edge electronics and communication systems. Companies are also working to develop advanced materials including composites and adhesive materials for extreme-demand environments.