Welcome to the 'cancelled because of bad weather' club.... Well worth spending the 'down time' on getting the ground exams out of the way - the last thing you'll want to do when (if!) the sun begins to shine is study, study, study!
I was lucky in PPL training - I only had two cancellations due to weather (but that's because I did the training in Florida!).
Since coming back to the UK, I was lucky for the first half-dozen or so flights booked. My final flight of 2002 was mid-October, and then despite PPL hire bookings at least every two weeks I didn't fly again until late January, all because of weather. In total I had nine consecutive bookings scrubbed, and since January more than half have been no-go.
I was supposed to have had conversion training to the C172 (in which I'm buying a share) yesterday, but this was canx due to mist and low cloud. Second attempt booked for Monday, but the weather forecast for then is lousy too!
Good luck with the training Twick Air.