Bob Hobden wrote:
A good example of that is a neighbour at home who still has a superb row of
tomatoes out in his garden covered in fruit and no sign of blight (or
Bordeaux Mixture). Yet on our allotments a mile or so away I am the only one
with any tomato plants still alive (just) everyone else lost theirs months
ago.

Ah, but that could be difference of variety. Some are a /lot/ more susceptible
to blight than others. And despite what whoeveritwas on tv said, some of the
varieties seem a lot better at 'holding it off' out of the fruit whilst the
stem and leaves lower down have been infected!