Aerospace Composite Technologies Ltd. (ACT) specialise in the design, development, testing, manufacture and support of transparency technologies and ice protection systems. The company is a division of GKN Aerospace Services, a global aerospace services group. ACT is a supplier of military and civil aerospace markets, with facilities in UK and USA. The UK site focuses on the production of cockpit canopies and flight deck windows, electrothermal ice protection systems and electroluminescent lighting.