Inappropriate/high speed wasn't a factor, trust me. I was in 2nd or 3rd gear at most, knew the car in front was there as had been following for about a mile, and was just approaching the junction as normal (foot on brake pedal, engine slowing car a little, ready to brake to complete stop and change down to 1st).
Speed at the time was low, I would estimate about 15 mph. It was no faster than you'd go round a supermarket car-park. If I'd been going too fast I'd have let this thread die and put it down to my own stupid fault.
Everything was normal until I braked to come to a complete stop, and there was no low resistance in the pedal. No braking, no sliding feeling, this is why I panicked because it just didn't make any sense for it to be happening. I remember one thing I did do was put the car into neutral. So I know my right foot wasn't on the clutch as my left foot was.
I don't think I took my foot off the brake; I could/should have pumped it once in the time I had. I kick myself for not using the handbrake, but there really wasn't any thinking time. My overriding concern was not hitting the car in front who had slowed to a stop, so I turned into the hedge.