[yoz]

The composer you mention was the most prolific and talented creator of BBC TV show themes: Ronnie Hazlehurst. He usually did arrangement and production of the music as well.

Other famous themes he created: Are You Being Served?; Last of the Summer Wine; The Fall and Rise of Reginald Perrin; To the Manor Born; Yes, Minister (and Yes, Prime Minister); Blankety Blank; and The Generation Game. See his Wikipedia page for the full list: https://en.wikipedia.org/wiki/Ronnie_Hazlehurst

AFAIK, the main reason that he received no royalties is because BBC programmes generated no income. The BBC's commercial arm, BBC Worldwide, generates revenue through selling and licensing content, but that was created in the 1990s. I don't know whether the royalties situation has changed, but I doubt it.

So Hazlehurst wasn't well paid, nor were the recordings well funded. This is another great example of constraints triggering innovation: the theme for Are You Being Served? memorably uses the sounds of coins and cash registers, which was Hazlehurst's solution to not being able to afford proper percussion.

If you have two spare minutes now, watch Matt Berry's lovely tribute to Ronnie Hazlehurst, from Charlie Brooker's Screenwipe: https://www.youtube.com/watch?v=8Ui1rdhQljU