Pilot episode was written as part of the BBC Comedy Playhouse series.
Nobody is sure how the show's title was spelled on screen in the early episodes which are now lost. Some BBC sites refer to it as "Till Death Us Do Part", some as "Til Death Us Do Part", some also include the apostrophe at the start to make the first word the contraction of "Until". Johnny Speight has used both spellings, "Till" and "Til" when he's written about the series.
The BBC attempted to ration the swear words to six "bloody"s per show. The attempt failed.
Alf sometimes referred to son-in-law Mike as a "randy Scouse git" (roughly translated as a horny slacker from Liverpool). Monkee Micky Dolenz heard the phrase when he visited England and watched the series, and made it the title of a song (appearing on the "Headquarters" album) that he wrote about the trip. When "Headquarters" was released in the UK, the record company objected to the use of the phrase (which didn't appear in the lyrics), because it was actually somewhat taboo to the British audience, and a minor scandal broke out. RCA Victor insisted Dolenz give an alternate title for the song, and he complied by calling it simply "Alternate Title". While no singles were issued from "Headquarters" in the US, a single of "Alternate Title" was issued in the UK, and became a hit in the wake of the scandal.
Leo McKern was the original choice for the role of Alf Garnett.