FILM 1541: THE DAY OF THE TRIFFIDS
TRIVIA: The triffids inspired the E.T. plants of E.T. the Extra-Terrestrial (1982)
In an interview, producer Bernard Glasser said that in order to satisfy a British government requirement that productions shot in British have a certain percentage of British executives, George Pitcher, a retired film executive, was hired as basically a "frontman"; although credited as producer, he had no actual authority over the production.
Kieron Moore and Janette Scott were only added to the cast when it was discovered on completion of filming that there was only 57 minutes of good usable footage available . The whole lighthouse sequence, directed by the veteran Director of Photography Freddie Francis, was only added on to help extend the movie's running time.