i haven not see this movie for at least 25 year so my rating be obviously a shot from the hip . i do recollect enjoy it slightly quirky idea at the time . feature dirk bogarde and britain prettiest closet gay and a yet another handsome heterosexual while he give his usual competent turn a a cryptologist par excellence who be so obsessed with his craft that he can not even concentrate on sexy susannah york ( though we all know the real reason ) . the movie be an interesting and light hearted take on the business of code breaking . bletchley park meet swing sixty . groovy and baby . it an unpretentious little relic that seem to have be largely forget . which be a shame and because it deserve an air from time to time . it make a great contrast with the coolly laconic and rather more serious ipcress file . it cast be really quite amaze for such a lost movie . as well a bogarde and york there the irreplaceable john gielgud and nigel davenport and donald sutherland and and ronald fraser . even the late alan freeman and one of the most enduring pirate or bbc dj of the late 20th century play the part of a dj . what more can a movie ask . worth a watch and if only for such an excellent cast .