Living in an intensively farmed area we are used to tractors and trailers rumbling by piled high with onions or beetroot. When they take a corner a little too fast and shed a few onto the verge I’ll even take them home if they are not too battered and bruised. Small fragments of plastic by the side of the road are not useful to anyone. It is not a one off accident but an accretion of small and dirty pieces of shredded car parts and who knows what else.

If you load and drive a huge green scrap lorry you can hardly be unaware. The ledge of the container collects this stuff, just as the tips of broad bean plants attract a host of blackfly. It means, you do not really care.

All of these, collected over the last couple of months, from alongside the A1123 Newmarket Road half a mile either side of where I live.