Posted: 20/01/2014 at 00:03
except for the late start as Dove said last year was quite good for Tomatoes so perhaps the varieties you grow were too late and made for a warmer country/a lot of luck?
Another thing it could be is tree roots - are there any under the spot you grew them if they were growing in the ground - it could be too much competition for water (correct me if I'm wrong anyone, just think this is what happened to one side of my greenhouse this year, but might have been shade from the tree)
Or it could be the opposite overwatering, I got a pretty good crop without watering much (twice a week for the greenhouse ones in the ground, less for the ones outside if it rained) Controlled neglect as Bob and Italiophile say and it suits my work schedule. Start with good compost though for drainage and nutrition.