The closing signature tune to E-W10, "Silks and Satins" by Peter Yorke, was a stock library track and so able to be used by any production company. As a result of this, the piece was often heard on Prisoner (1979) as an 'old film theme' when the women of Wentworth Detention Centre were watching TV.
Although the Star Trek (1966) edition "Plato's Stepchildren" is commonly held to have featured TV's first interracial kiss, that was only the case on US television. Episode 724 of E-W10, transmitted in July 1964, had featured such a scene over four years previously, when a long-burning romance blossomed between Louise Mahler (Joan Hooley) and Giles Farmer (John White). Some sequences were carefully toned down before transmission.