Posted: 20/09/2016 at 09:16
Ah, that could be why they're struggling to ripen. I'd pick all the green ones and make delicious Green Tomato Chutney, and leave the ones that are changing colour to ripen on the plant.
Next year take a look at info on taking out side shoots of tomato plants. Almost all varieties need this to be done if you want good productivity.
Also, when the tomatoes begin to ripen it's helpful to remove a lot of the plants lower leaves. You could do this now, to concentrate energy on the fruits and increase air flow around the plants which cuts down on the chance of bacterial problems.