During 1919 and 1920 , despite his resignation from flying , Lewis began writing about aviation safety while he began his career as an insurance broker .
Lewis began his career in insurance with Sedgwick and Collins , brokers with Lloyd 's of London .
During 1919 and 1920 , despite Lewis ' resignation from flying , Lewis began writing about aviation safety while he began career career as an insurance broker .
Lewis began his career in insurance with Sedgwick and Collins , brokers with Lloyd 's of London .