... will certainly save up the 'package' price in one shot.
That's the way to do it.
If you can save £200 per month easily for the next two years, not only will you have two thirds of the money needed to get your PPL, you will also KNOW that you can afford the hobby. Start saving now and be ready to start learning in earnest in the Summer of 2012. Having the funds ready will allow you to fly as much as the weather allows.
Good luck
tp