During the 1960s and 1970s, he was involved in shows for the BBC and Thames Television (as well as "Frankie Howerd Reveals All" for Yorkshire Television in 1980). Ray Galton and Alan Simpson wrote for him from 1964 to 1966 when he worked for the BBC and also for a one-off show for Thames, "Frankie Howerd meets the Bee Gees", shown on 20 August 1968. He was known for his seemingly off-the-cuff remarks to the audience, especially in the show "Up Pompeii!" (1969–70), which was a direct follow-up from "Forum". His television work was characterised by direct addresses to camera and by his littering monologues with verbal tics such as "Oooh, no missus" and "Titter ye not". A later sale of his scripts, however, showed that the seemingly off-the-cuff remarks had all been meticulously planned. Barry Cryer said of his technique: "What he could do with a script was amazing, like all the great performers. He transformed something you'd just written – what you hoped was in a Frankie Howerd idiom – but when you heard him do it, my God, it was something else; – it was gossiping over the garden wall, the "apparent" waffle – he was like a tightrope walker, you thought he's going to fall off in a minute, you thought , 'Come on, Frank' , we're waiting for a laugh, and then, suddenly, "Bang". He knew exactly what he was doing." Another feature of his humour was to feign innocence about his obvious and double entendres, while mockingly censuring the audience for finding them funny.