Hi There, was coming up to a roundabout at a reasonable speed and applied the brakes only for nothing to happen. Managed to swerve onto the side verge avoiding the cars in front but went straight through the roundabout at considerable speed but no one in the way otherwise a nasty crash would have happened. Cautiously drove home about 10 miles. there is only the slightest amount of braking on applying them but the handbrake sign, traction control are permanently lit. put a code reader in but only 1147 comes up which is for a dodgy rear o2 sensor which already know about. Scared the crap out of me to be honest as I would have crashed if there hadn't been anywhere to go.