I've just been to Frimley Hospital (from NW London) and when I braked leaving the M3 I was a bit shocked cos I had to put the pedal all the way to the floor to slow myself down. Normally as soon as I hit the pedal I can feel the brakes working. I was going to phone the breakdown bods after my appointment but decided to try it before I did. The brakes worked fine and I've just driven all the way back with no problems. There is plenty of brake fluid and I only had the car serviced 2 weeks ago and was told the brakes were fine. Anyone got any ideas on what's the likely cause of this? It's never happened to me before in almost 20 years of driving. I'm going to ting the garage that did my service but I bet they can't see me for ages!