Learning to drive in london..?

Is there a cheaper way of learning to drive? what about one of them weekly courses? or maybe getting a friends to teach you in a car you bought cheap.. its so freakin expensive...
Answer
It is well expensive to learn in london, what you should do is take one or two lessons, just so that you know what rules are and what is expected, then, learn with your friend, befoer your test, take about 2 lessons with an instructor to brush up. its the best alternative