OK so they weren't 'broken' really but they were in need of attention through the passage of time. Because top quality components were used with silicon fluid and the car had been stored well, the brakes were in amazing condition although the pedal did hit the floor and stay there - a minor issue :-)
Here's the set-up. We have a Tilton "over hung" pedal box with three master cylinders. Twin masters for the brakes (front and rear) with an adjustable bias arrangement - that's the red cable on the left of the picture above. This red cable leads to a knob on the dashboard and means that you can alter the front/rear bias from the drivers seat. The clutch pedal is also part of the pedal box arrangement - this leads to a Saab annular release bearing, the bleeder you can see near the right hand master is a remote bleeder for the clutch . All this is all fitted into the pedal box which is in turn fitted into the reworked bulkhead. Master cylinders are Girling and although I couldn't tell until I had disassembled it all, they are all identical 0.7 bore - same as GT6 brakes.