I agree, I love a good charity shop book mooch. Almost too much, I came home with five more books the other day, despite having a terrible tbr pile. But they were 5 for £1, I couldn't resist!

I suspect the bins will route to a charity bookshop. It seems Oxfam are the stand out for charity bookshops. There's one in Durham that's amazing, but also, well away from any parking places which makes donating difficult.