LONDON (Reuters) - British luxury carmaker Aston Martin posted a £104.3 million pretax loss in 2019, after a tough year in which its sales fell and share price slumped as it ploughed money into its first sport utility vehicle. The loss from the central England-based firm comes after the firm posted a 7% decline in core wholesale demand. The company said Chief Finance Officer Mark Wilson will step down from his role no later than April 30. It said there had been some disruption to the supply of..