Posted: 24/05/2012 at 17:40
GC I know that you have already tried to sort this out directly with B & Q but all I am suggesting is that Trading Standards is not necessarily the right path to take. (I am married to a retired TSO). I have posed the question directly with B & Q and have still to receive an answer. The weight of the RHS might bring about a response at least. At the moment, I am deafened by their (B&Q's) silence.
I have no doubt that there is something radically wrong with a lot of multi purpose compost. The desire to be peat-free has resulted in some pretty dreadful stuff being out there in the market place. (And given the very small amount of peat that gardeners use, it is ironic that we seem to shoulder most of the blame, irrespective of the vast depletion of the resource for power generation, for example).
I have spoken with said OH who says that he had cause to look into problems some years ago. Apparently, there was (is?) an industry standard for compost, and laboratories in Hertfordshire were much involved in being able to test etc etc. (His memory is not what it was, bless, but I'll try to find out a bit more and let you know if there is anything to add).