I got mine yesterday from worldofcamping. It's going to take up a fair bit of room but if you tape the lid down with masking tape and turn it upside down, then put the inner bucket in the big end, there's actually quite a lot of empty space for packing.
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.