Q.Leaf Curl On Tomato Plants
three tomato plants – all in containers all treated the same watering compost etc but one has terrible curling of the leaves.

Certified GKH Gardening Expert
Unfortunately, your photos did not come through. Curling on its own is a normal part of many tomato cultivars, but paired with any other symptom could be anything from pH imbalances to deficiencies.
Here are some articles that will help:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
https://www.gardeningknowhow.com/edible/vegetables/tomato/growing-tomatoes-guide.htm