Here is a picture of my tomato plants on my south facing window in the UK. I started them far too late from seed, I guess I planted them in about July. By the time winter came they weren't anywhere close to fruiting but I couldn't bear to let them die so I brought them indoors.
My question is, if I re-pot these into bigger pots, keep them indoors until spring and then plant them outside, will they be able to flower and fruit? Or have I ruined their chances by starting late and bringing them indoors? I have fertiliser but I haven't used it since I brought them in.
I've searched the forums and lots of people are asking about bringing plants in over the winter when they have already fruited, but these never even got to the point of fruiting. I know they are leggy and straggly but I love them now so I don't want to give up on them!