Could you tell me what has gone wrong with these tomatoes?

Question

In greenhouse but planted quite early and before a very cold spell. Lots of curled leaves but that isn’t usually problem.

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Answer 1

It could be stunted growth from the cold. These will not produce well so it's best to start over.

https://www.gardeningknowhow.com/edible/vegetables/tomato/growing-temp-for-tomatoes.htm

https://www.gardeningknowhow.com/edible/vegetables/tomato/planting-time-for-tomatoes.htm

https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-plant-problems.htm