Well that's a first after all these years. Gt's brakes failed coming up roundabout around 45mph. Luckily it pumped up enough. Odd though because there is no loss of fluid visible, loads of clunking and squeaking at the rear with wheel rotation noise too, touch pedal and it clonks at the rear and pedal is all over the place. Some bad, some fine, and if left to stand its ok again till you move - then its Russian Roulette which is interesting.
Limped home and will take off a wheel for a looksee if it doesn't rain. Sounds like trouble again and only changed everything inc fluid last month. Still its one way to stop the squeal on the front right!
I can't begin to guess at this point but I think something has broken somewhere.