British Heart Foundation I have used many times. They accept furniture and white goods, you can drop it off at one of their shops or book a collection. I recently donated an old hoover here and not going to lie, it was very easy! Not only can you donate something that’s become useless to you, it might be extremely useful to someone else and then the wonderful BHF fund life saving research with that sale. Yay!
Head to their website to find out more!