Best way to get rid of old furniture?

Brie

have you tried Freegle or another local social media site?  some people will take anything.  and of course some people will mess you about but it might work.    

Bigphil1474

If it's usable by somebody, try Facebook - either a local group or market place. Advertise for free, collection only.

Otherwise, wait for the council's site to catch up and get your council to collect. They are usually loads cheaper than private companies.

Final option for me would be to completely break it down into component parts - if it's wooden framed that's usually fairly easy. Metal framed can be a bit more work. Round here, metal disappears from driveways about twice a week so easy to shift. You could put some bits in your bin, rest to the tip.