During the production of the last four episodes of The Prisoner series (the episode "Living in Harmony" was being made) ITC arranged for a press conference to take place at MGM-British studios in Borehamwood on 20 September 1967 - a week before the scheduled broadcast on some British TV channels. Two episodes - "Arrival" and "The Chimes of Big Ben" - were shown to the press. The alternate version of "The Chimes of Big Ben" includes a sequence that was later cut where Number Six uses a triquetrum (an ancient Greek measuring device) to locate the general position of the Village. The end titles also finished with the smaller wheel of the penny farthing resolving into the Earth while a galaxy of stars fills the bigger wheel and then the canopy on the bicycle. The Earth then expanded to a single word 'POP'. (thetvdb.com)