I am growing tomatoes in my greenhouse at home rather than on the allotment. In the past I have found tomatoes grown on the allotment succumb to blight before the tomatoes are ripe.
I have had this greenhouse since I was about 10 years old. My parents bought it for me and it lived at their house for many years until arriving in my back garden some 20 years later! I have upgraded it to include a vented window which I found on sale at B&Q for the princely sum of £10, a real bargain!