In reply to LastBoyScout:
I've got a mini Sony analogue radio, about the size of a bigger lighter, from back in the days before podcasts, it would run from 1 AAA battery for months but quality of signal could be iffy. I put pocket radio into Amazon and there seems to be lots of possibilities for around a tenner. e.g. https://smile.amazon.co.uk/dp/B07VXHGZ22/ref=cm_sw_r_cp_apa_i_7AK6Eb3H6Y3F6 but streaming on BBC sounds seems to take up very little data if you've got a phone.
If I'm out on my own walking, cycling, camping etc. I tend to listen to podcasts. I use an old little gen2 iPod - the battery will do well over 24 hrs of continual playing of podcasts, and it can hold 100s of hours of different podcasts, so if you are off for three days of hiking you can get through a lot of documentaries or podcast series you meant to listen to, but didn't have time for. I like using it because it means that the battery in my phone is used just for GPS and camera when I'm out on the hill.
I had my first ipod for well over a decade and used it daily. It got rained on, dropped whilst cycling numerous times, dropped in snow, etc etc. Always fine as I bought some hard plastic cover for it. Eventually the buttons started wearing out, I was quite worried what I would do it had become such a big part of my life! Then I found you can now buy little used ones for 20 quid off eBay!