Picture posting is enabled for all :)
I would be pleased to know what SELLS, not necessarily what is sold, in your allotment shop remembering that a fast turnover means bigger bulk buys and more profit.http://allaboutallotments.com/index.html
I don't know if they would sell, but what I would like to see is green manure seeds in decent quantities.
and the stuff you can use for wind breaks (green, builders use it - my brain is disintegrating as I type ::) ).