You can donate unwanted good quality furniture using the Re-use website.
Most organisations and charity shops will take household and office furniture which still has life in it but upholstered furniture must have the labels required by the Furniture and Fire Regulations 1998.
Some electrical goods may be accepted but must be in working order. Most will accept crockery and bric-a-brac. Rugs in good condition will be accepted but not carpets.