Tomato blight has hit our allotments. It is a disease caused by a fungus-like organism that spreads rapidly in the foliage and tubers or fruit of potatoes and tomatoes in wet weather, causing collapse and decay.
It is a serious disease for potatoes and outdoor tomatoes. It is recognisable by the brown fruit and withering leaves, which spread by wind and water-splash.
The effective plant, probably the entire crop, must be removed – tubulars and all, and dispose of in your brown bin waste. DO NOT compost! Dig over the area, and plant tomatoes (and probably potatoes) in a different spot next year, and avoid planting in that area for up to 4 years. There is no prevention for tomato blight.