Gas Detection (Australia) Pty Ltd (GDA) specialises in the design and manufacture of gas sensors and gas detection systems.   The core of its expertise stretches back over 20 years with James Boucher, the Managing Director, who is also the managing director of TQ Environmental Plc operating in the UK and Europe. TQ is a market leader in gas detection innovation in the UK. GDA is based in Toowoomba, Queensland, and has close links with centres of excellence both in Australia and in the UK.