R4 has been my station of choice for years, nowadays supplemented/superseded by Absolute Rock (mainly 'cause KKFM isn't easily available in the UK).
I have a now quite ancient £1000 fancy specialist communications radio at my bedside, which I bought second hand in a car booty long ago for just £10. The seller had no clue what he was selling. That has a sleep timer button, press once, and it stays on for 60 minutes.
I used to have that tuned to R4, just to catch the shipping forecast - not because I had any interest in it, rather it just gave an 'atmosphere' and was so incredibly boring, I would be asleep before the end of it
I recently retuned it to an Independent station, where they play 'all the old hits', back to back - maybe called 'Greatest Hits'.