Hi there,
I was in a similar position when I applied for pharmacy courses a few years ago. I too applied quite early (around Oct/Nov) time. I know that some universities like to wait and collate all the applications together before sending out interview offers. I know for myself I got my Bath interview offer quite late around March time so please don't worry and focus on your A-levels firstly. Once you start getting your interview offers, then start planning and preparing. But until then, its about a patiently waiting.
Please also don't be disheartened when you hear some of your other peers receiving interviews and you haven't.
If you have any questions about the course, feel free to ask.
All the best!
University of Bath