Jigsaw puzzles (Woodley RG5)

I am setting up a community project in Woodley. It’s a jigsaw lending library. Residents will be able to borrow library jigsaws for free. I am planning to launch the library with a stock of at least 100 jigsaws. To start with, the focus is on adult jigsaws, so I’m looking to acquire puzzles with 500 pieces or more. Any you could donate would be gratefully received. They must be complete. Thank you, Graham.