Applied Works (who, incidentally, do beautiful work) mentioned Retronaut's post of London Film Festival posters from 1957 up to 2010. It's a great collection if, as we agreed, a little patchy at times. For me, the best one was this one for the 10th festival in '66. Would love to know who designed it. Typical of the era's best graphic design it has a feel of Raymond Hawkey. If anyone knows who did design it, please let me know.