sentences:  "Bristow Helicopters Limited" traces its origins back to the endeavours of British inventor and business man Alan Bristow.A former test pilot for both the Royal Navy and Westland Helicopters, Bristow had chosen to invest his earnings into forming multiple companies, the first of which being "Air Whaling Ltd".In June 1995, he opted to establish Bristow Helicopters Limited after securing a contract for the supply of helicopter crews at the Shell Oil Company to support rigs in the Persian Gulf.