In total 512 locomotives were built by Brush and Crewe Works between 1962 and 1968. For many years the "standard" large locomotive of BR, they operated extensively across most of BR. Delightful in their original two tone green livery, after the blue years, the railfreight sector liveries really suited them. They were awe inspiring when new, I've never forgotten the first time I saw one at Kings X, far more inspiring than the American influenced English Electric designs. Lovely to still be able to go down to York station and see them regularly, more than 50 years after introduction.
Technical details are from http://www.class47.co.uk/c47_intro_v2.php
a very professional, excellent site.
© Paul Bartlett's Photographs