David is CEO of Propelair, the cleantech start-up UK designer and manufacturer of (what we believe is) the world's lowest water flush toilet, backed by Investec and Earth Capital. He was inspired to join the business by the technology, which replaces c7 litres(l) of water with 120l of air to use just 1.5l of water to move waste into existing drains. This saves water, saves money and improves hygiene. David loves selling great engineering, having been MD of UK & Ireland at Dyson, where he led the turnaround of the territory, which he left to become the CEO of Aqualisa, the shower company, which he grew.