Found the solution to the noise.
Replaced the Pads (mintex1144) with a spare set of EBC Greens i kept in the shed, and noise gone. Think i may have cooked them on track and caused the whole pad material to become hardened and just where the disc kissed the pad when turning was causing the high pitched squeaking
Had exactly this on my old setup, its the mintex pads m8, 99% sure of it.