There are various charity shops throughout the borough of St Helens who are normally happy to accept goods (clothes, toys, books, furniture etc) that are in resellable condition. You can find a list of charity shops in your area by typing your post code into the Charity Retail Association website.
You could also consider donating your unwanted items to family, friends or through the FreeCycle network – FreeCycle is a network of local groups who advertise unwanted items to others in their locality with the overall aim of reducing usable items out of landfills.