I have a small bay tree indoors in a pot. It's next to a large, north-facing window with a minor draught coming from it but thankfully the cold in winter doesn't seem to come in too badly.
The tree was recently repotted (maybe 2-3 weeks ago). Since repotting I've watered it, but not given it any food. I've noticed that although the leaves seem to be greening up again after the repotting, they're somewhat curled under and don't seem to be fleshing out.
I am not sure if some plant food, particularly since colder times are on the way, might be a good idea. Any tips or tricks welcome since I really want this plant to succeed as it has sentimental value :D