Old working mobile phones (Hounslow TW3)

Hi all, I’m looking for any old mobile phones that still work. Vintage ones from the 80s and 90s would be brilliant, but older-style handsets from the 2000s are welcome too. Brick phones, flip phones, Nokias, anything like that.

I’d love to put together a little collection to show my son how phones have changed over the years. Chargers would be a bonus but aren’t essential.

Happy to collect at a time that suits you.

Thank you!