I purchased a one tonne bag of border blend topsoil. The description states the following: That it is "a dark rich blended topsoil... a fine friable organic rich loam" and that "this soil has been screened to 10mm to remove any lumps and stone." However, having examined it carefully i.e. sieved about half of it now, I can report the following: 1/ That twenty per cent plus consists of stones larger than 1cm. 2/ That the rest is comprised of at least 70% clay – I've had a geologist friend look at it and she estimated its clay content at 70-80 per cent. 3/ I have found various items that were not mentioned in the description: old nails; various bits of rusty iron; concrete; plastic (from bin liners and plastic bags); wire; bits of broken roof tiles; lumps of wood; aluminium foil; part of a mother board; a sim card for a phone; broken glass (quite a lot) ; a counter for a board game; a small piece of costume jewellery and – wait for it – a used condom. According to Quality Garden Supplies it is "perfect for flower beds and borders". My view is that it's perfect, ideal material for the local rubbish tip. This gives a new angle on fly-tipping. It's actually the reverse - fly-selling, i.e. selling what was probably originally fly-tipped material. 'Quality Garden Supplies' - close, but 'Quality Garden Crooks' would be more accurate. I intend to provide further updates on any other new contaminants/finds I may unearth.