<Li> Ernest Clark as Air Vice Marshal Woodbridge </Li> <P> Encouraged by the worldwide success of 633 Squadron, producer Walter Mirisch proposed a series of British made films with a military theme having major American stars in the lead that would comply with the Eady Levy requirements and cost no more than $1 million US $. This film was the first of the series of John C. Champion's Oakmont Productions and began shooting in May 1967 . The others were Submarine X-1, Hell Boats, Mosquito Squadron, The Thousand Plane Raid and The Last Escape . Each of the films was approximately 90 minutes long making them suitable for half of a double feature and had a Hollywood star leading the cast (Lloyd Bridges in this film's case). </P> <P> The film was shot at MGM - British Studios Borehamwood, Gaddesden Place Hertfordshire and Millwall Dock, St Katharine Docks and the London Docklands with special effects by the Bowie Organisation . </P> <P> Composer Gerard Schurmann used his score as the basis of a 1971 concert work called Attack and Celebration . As with the other Oakmount films, portions of Ron Goodwin's score for 633 Squadron are reused . </P>

Where was attack on the iron coast filmed