Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,100 pages of information and 233,633 images on early companies, their products and the people who designed and built them.
The Bristol Type 171 Sycamore was the first helicopter to be granted a British civil certificate of airworthiness. It was developed by a team at the Bristol Aeroplane Co led by Austrian-born Raoul Hafner.
The first prototype flew in 1947 and the first aircraft entered service for military and civilian tasks by the early 1950s.