Alison o.uk wrote:

I'm sure that I have seen a compost bin somewhere that builds up in layers,
like each level of the 'hive' stacks on top of the previous one. Now I only
seem to be able to see one that has a removeable bottom slat. Has anyone
else seen the stackable sort or even, know where I can get one?

http://www.organiccatalog.com sell them IIRC. HDRA Members get 10%
off. I always think they are very expensive for what they are. Cheaper
to find a chippy, make friends and get one made up;-)
//
Jim