Go to www. freecycle.org, click on to the uk one, then find your local ones and apply. Sometimes they ask you for a reason why you want to join so have something ready to put in there. They ask you to make an offer before you do a want post.
We've got rid of loads of stuff on there and we've got quite a few bits too.....I picked up a lovely double bed base last weekend, our old one was very squeaky and it wasn't doing our love life an awful lot of good