Do you get green guilt? I cycle everywhere, I use sodium bicarbonate and lemons for cleaning, I water plants with washing-up water and I recycle every last yoghurt pot, tuna can and envelope. I even make my own compost. But despite all this, if I so much as chuck one banana skin in the non-recycling rubbish bin then I lose sleep for days. I went into a cold sweat last week when I discovered that a certain plastic packaging which I had been putting in the plastic/glass/tin bin for years is actually non-recyclable. Have I been unwittingly contaminating tonnes and tonnes of otherwise perfectly recyclable material? Eek.